Product Description

PRODUCT DESCRIPTION

2.5 Ton Diesel Forklift

VIFT forklift advantages:
1.Power System. VIFT forklifts are all with reliable power accessories,like CZPT Engine. All accessories are support by domestic and world famous brand, high quality, reliable after-sales.We follow the strict environmental design,all engines match the China or even higher emission standards.
2.Super comfortable. VIFT forklifts are all with comfortable driving space,adjustable steering wheel and seats,super low and non-slip step,suspension steering axle,storing space,and convenient LCD panel.
3.VIFT forklift can equip with different attachments according to your need.

Engine Option 

PRODUCT PICTURES

Why choose VIFT?

Q1: How long is the  Warranty for VIFT product?
A1: VIFT provides 12 months or 1000 hours for the whole machine from on board time.

Q2: How about the delivery time?
A2: Usually VIFT producing time is 15- 20 days after we receive the advanced payment. For some standard products, we may have stock and could delivery immediately. 

Q3: Can VIFT provide customized products? OEM products or ODM products?
A3: Yes, VIFT can provide customized products per your request, both OEM and ODM are  acceptable. We do a lots of non-standard products, welcome your special reqeust.  

Q4: Could we request our own color for the products? 
A4: Yes, of course, you just need to offer us the RAL code.

Contact us 

VIFT is open and very easy to reach

China HQ contact information:

1.  

2.  

3.  

4.  

5.  Add: No 858, FengGao Road , Xihu (West Lake) Dis. district , ZheJiang , China .

• VIFT  American Representative: 

•  

Worm Gear Motors

Worm gear motors are often preferred for quieter operation because of the smooth sliding motion of the worm shaft. Unlike gear motors with teeth, which may click as the worm turns, worm gear motors can be installed in a quiet area. In this article, we will talk about the CZPT whirling process and the various types of worms available. We’ll also discuss the benefits of worm gear motors and worm wheel.

worm gear

In the case of a worm gear, the axial pitch of the ring pinion of the corresponding revolving worm is equal to the circular pitch of the mating revolving pinion of the worm gear. A worm with 1 start is known as a worm with a lead. This leads to a smaller worm wheel. Worms can work in tight spaces because of their small profile.
Generally, a worm gear has high efficiency, but there are a few disadvantages. Worm gears are not recommended for high-heat applications because of their high level of rubbing. A full-fluid lubricant film and the low wear level of the gear reduce friction and wear. Worm gears also have a lower wear rate than a standard gear. The worm shaft and worm gear is also more efficient than a standard gear.
The worm gear shaft is cradled within a self-aligning bearing block that is attached to the gearbox casing. The eccentric housing has radial bearings on both ends, enabling it to engage with the worm gear wheel. The drive is transferred to the worm gear shaft through bevel gears 13A, 1 fixed at the ends of the worm gear shaft and the other in the center of the cross-shaft.

worm wheel

In a worm gearbox, the pinion or worm gear is centered between a geared cylinder and a worm shaft. The worm gear shaft is supported at either end by a radial thrust bearing. A gearbox’s cross-shaft is fixed to a suitable drive means and pivotally attached to the worm wheel. The input drive is transferred to the worm gear shaft 10 through bevel gears 13A, 1 of which is fixed to the end of the worm gear shaft and the other at the centre of the cross-shaft.
Worms and worm wheels are available in several materials. The worm wheel is made of bronze alloy, aluminum, or steel. Aluminum bronze worm wheels are a good choice for high-speed applications. Cast iron worm wheels are cheap and suitable for light loads. MC nylon worm wheels are highly wear-resistant and machinable. Aluminum bronze worm wheels are available and are good for applications with severe wear conditions.
When designing a worm wheel, it is vital to determine the correct lubricant for the worm shaft and a corresponding worm wheel. A suitable lubricant should have a kinematic viscosity of 300 mm2/s and be used for worm wheel sleeve bearings. The worm wheel and worm shaft should be properly lubricated to ensure their longevity.

Multi-start worms

A multi-start worm gear screw jack combines the benefits of multiple starts with linear output speeds. The multi-start worm shaft reduces the effects of single start worms and large ratio gears. Both types of worm gears have a reversible worm that can be reversed or stopped by hand, depending on the application. The worm gear’s self-locking ability depends on the lead angle, pressure angle, and friction coefficient.
A single-start worm has a single thread running the length of its shaft. The worm advances 1 tooth per revolution. A multi-start worm has multiple threads in each of its threads. The gear reduction on a multi-start worm is equal to the number of teeth on the gear minus the number of starts on the worm shaft. In general, a multi-start worm has 2 or 3 threads.
Worm gears can be quieter than other types of gears because the worm shaft glides rather than clicking. This makes them an excellent choice for applications where noise is a concern. Worm gears can be made of softer material, making them more noise-tolerant. In addition, they can withstand shock loads. Compared to gears with toothed teeth, worm gears have a lower noise and vibration rate.

CZPT whirling process

The CZPT whirling process for worm shafts raises the bar for precision gear machining in small to medium production volumes. The CZPT whirling process reduces thread rolling, increases worm quality, and offers reduced cycle times. The CZPT LWN-90 whirling machine features a steel bed, programmable force tailstock, and five-axis interpolation for increased accuracy and quality.
Its 4,000-rpm, 5-kW whirling spindle produces worms and various types of screws. Its outer diameters are up to 2.5 inches, while its length is up to 20 inches. Its dry-cutting process uses a vortex tube to deliver chilled compressed air to the cutting point. Oil is also added to the mixture. The worm shafts produced are free of undercuts, reducing the amount of machining required.
Induction hardening is a process that takes advantage of the whirling process. The induction hardening process utilizes alternating current (AC) to cause eddy currents in metallic objects. The higher the frequency, the higher the surface temperature. The electrical frequency is monitored through sensors to prevent overheating. Induction heating is programmable so that only certain parts of the worm shaft will harden.

Common tangent at an arbitrary point on both surfaces of the worm wheel

A worm gear consists of 2 helical segments with a helix angle equal to 90 degrees. This shape allows the worm to rotate with more than 1 tooth per rotation. A worm’s helix angle is usually close to 90 degrees and the body length is fairly long in the axial direction. A worm gear with a lead angle g has similar properties as a screw gear with a helix angle of 90 degrees.
The axial cross section of a worm gear is not conventionally trapezoidal. Instead, the linear part of the oblique side is replaced by cycloid curves. These curves have a common tangent near the pitch line. The worm wheel is then formed by gear cutting, resulting in a gear with 2 meshing surfaces. This worm gear can rotate at high speeds and still operate quietly.
A worm wheel with a cycloid pitch is a more efficient worm gear. It reduces friction between the worm and the gear, resulting in greater durability, improved operating efficiency, and reduced noise. This pitch line also helps the worm wheel engage more evenly and smoothly. Moreover, it prevents interference with their appearance. It also makes worm wheel and gear engagement smoother.

Calculation of worm shaft deflection

There are several methods for calculating worm shaft deflection, and each method has its own set of disadvantages. These commonly used methods provide good approximations but are inadequate for determining the actual worm shaft deflection. For example, these methods do not account for the geometric modifications to the worm, such as its helical winding of teeth. Furthermore, they overestimate the stiffening effect of the gearing. Hence, efficient thin worm shaft designs require other approaches.
Fortunately, several methods exist to determine the maximum worm shaft deflection. These methods use the finite element method, and include boundary conditions and parameter calculations. Here, we look at a couple of methods. The first method, DIN 3996, calculates the maximum worm shaft deflection based on the test results, while the second one, AGMA 6022, uses the root diameter of the worm as the equivalent bending diameter.
The second method focuses on the basic parameters of worm gearing. We’ll take a closer look at each. We’ll examine worm gearing teeth and the geometric factors that influence them. Commonly, the range of worm gearing teeth is 1 to four, but it can be as large as twelve. Choosing the teeth should depend on optimization requirements, including efficiency and weight. For example, if a worm gearing needs to be smaller than the previous model, then a small number of teeth will suffice.

Product Description

SUNYO / Chinese High Quality/  WZ30-25 Backhoe Loader  with Famous Brand Engine and Transmission. Widely used, flexible operation

The Backhoe Loader WZ30-25:
   WZ30-25 Backhoe loader, with CZPT  YC4A105Z-T20 engine , power is100hp, chinese axle and Trans. With A/C, pilot control, Reversing video, hammer pipe ,                                                             WZ30-25 Backhoe loader Operating weight7600kg, front bucket 1.2 m3, rated loading is 2.5tons. Rear CZPT bucket is 0.3 m3,                                     
  It can  use for loading and digging, 1 machine has 2 functions. can help you to save much more cost. and can do many kinds work for building road, and so on.                                                                      
 It will bring you higher economic efficiency, Better profit income.

Main Performance Parameter of WZ30-25:

Backhoe Loader:
the backhoe loader also called a loader backhoe,is a heavy equipment vehicle that consists of a tractor fitted with a bucket on the front and a backhoe on the back. Due to its small size and versatility, backhoe loaders are very common in urban engineering and small construction projects (such as building a small house, fixing urban roads, etc.) as well as developing countries. This type of machine is similar to and derived from what is now known as a TLB (Tractor-Loader-Backhoe), which is to say, an agricultural tractor fitted with a front loader and rear backhoe attachment.

Packing & Shipping:
We have been engaged in foreign trade for more than 18 years and have very rich experience in shipping. According to the past situation, each of our products is complete and delivered to customers as planned.
Generally, For the WZ30-25 Backhoe loader , one set need 1 40H conainer, or 2 sets load into 1 40H container and 1 20 container.  it also can load in the bulk ship, or Ro-on/Ro-off ship. it according your requirements

Attachments:
Our backhoe loader can be with some more attachements excapt the standard bucket. for exmple the 4 in 1 bucket, Quick Change, Fork, Auger, Hamer, Grass Grab, Wooden Fork, Snow blade, sweaper, Rops And so on. 

Our Service :
Pre-sale service:
To our customers, before you buy the equipments, we hope to understand your needs, according to your machine requirements and your budget; choose the right model for you, to ensure that you buy high-quality products at a lower price.
At the same time, you are welcome to visit our factory in HangZhou, China; we will book hotels, air tickets and take you up from air port.

After-sale service:
After the sale, we will properly arrange the transportation of the machine to ensure that the goods are safely delivered to your hands.
At the same time, we will provide you with technical support 24 hours a day, or send engineers to CZPT the installation and operation. If there are any quality problems with the machine, we will solve it for you in the first time.

Factory View:

Here show some factory pictures to help you understand our company.

Exhibition:
Here show you some exhibition pictures . 

Certificate :

 

FAQ:
Q1: Which country do you export to?
Asia: Pakistan, Philippines, Thailand, Myanmar, Vietnam, Bangladesh, Kazakhstan, Turkmenistan, etc.
Middle East: Iran, UAE, Jordan, Oman, Saudi Arabia, Syria, etc.
Europe: Poland, Russia, Ukraine, Belarus, Bulgaria, etc.
Africa: South Africa,Kenya,Congo,Ethiopia,Nigeria,Ghana,Algeria,Senegal,Tunisia,etc.
South America: Paraguay, Colombia, Brazil, Peru, Chile, Cuba, Venezuela, etc.
Oceania: Australia, etc.

Q2: What is the proportion of your products export?
90% of our products are exported to all over the world.

Q3: What is the payment term?
We can discuss with you. Consider for long-term customers we are favorable payment terms TT, L/C, west union. It depends on the cooperation time, country and contract value.

Q4: What kind of logistic service do you supply?
FOB, CIF, C&F

Q5: What spare parts can you supply?
All kinds of spare parts of SUNYO JCM, SDLG, SHACMAN,  SHXIHU (WEST LAKE) DIS.I, YTO,  etc.
 

Screw Shaft Features Explained

When choosing the screw shaft for your application, you should consider the features of the screws: threads, lead, pitch, helix angle, and more. You may be wondering what these features mean and how they affect the screw’s performance. This article explains the differences between these factors. The following are the features that affect the performance of screws and their properties. You can use these to make an informed decision and purchase the right screw. You can learn more about these features by reading the following articles.

Threads

The major diameter of a screw thread is the larger of the 2 extreme diameters. The major diameter of a screw is also known as the outside diameter. This dimension can’t be directly measured, but can be determined by measuring the distance between adjacent sides of the thread. In addition, the mean area of a screw thread is known as the pitch. The diameter of the thread and pitch line are directly proportional to the overall size of the screw.
The threads are classified by the diameter and pitch. The major diameter of a screw shaft has the largest number of threads; the smaller diameter is called the minor diameter. The thread angle, also known as the helix angle, is measured perpendicular to the axis of the screw. The major diameter is the largest part of the screw; the minor diameter is the lower end of the screw. The thread angle is the half distance between the major and minor diameters. The minor diameter is the outer surface of the screw, while the top surface corresponds to the major diameter.
The pitch is measured at the crest of a thread. In other words, a 16-pitch thread has a diameter of 1 sixteenth of the screw shaft’s diameter. The actual diameter is 0.03125 inches. Moreover, a large number of manufacturers use this measurement to determine the thread pitch. The pitch diameter is a critical factor in successful mating of male and female threads. So, when determining the pitch diameter, you need to check the thread pitch plate of a screw.

Lead

In screw shaft applications, a solid, corrosion-resistant material is an important requirement. Lead screws are a robust choice, which ensure shaft direction accuracy. This material is widely used in lathes and measuring instruments. They have black oxide coatings and are suited for environments where rusting is not acceptable. These screws are also relatively inexpensive. Here are some advantages of lead screws. They are highly durable, cost-effective, and offer high reliability.
A lead screw system may have multiple starts, or threads that run parallel to each other. The lead is the distance the nut travels along the shaft during a single revolution. The smaller the lead, the tighter the thread. The lead can also be expressed as the pitch, which is the distance between adjacent thread crests or troughs. A lead screw has a smaller pitch than a nut, and the smaller the lead, the greater its linear speed.
When choosing lead screws, the critical speed is the maximum number of revolutions per minute. This is determined by the minor diameter of the shaft and its length. The critical speed should never be exceeded or the lead will become distorted or cracked. The recommended operational speed is around 80 percent of the evaluated critical speed. Moreover, the lead screw must be properly aligned to avoid excessive vibrations. In addition, the screw pitch must be within the design tolerance of the shaft.

Pitch

The pitch of a screw shaft can be viewed as the distance between the crest of a thread and the surface where the threads meet. In mathematics, the pitch is equivalent to the length of 1 wavelength. The pitch of a screw shaft also relates to the diameter of the threads. In the following, the pitch of a screw is explained. It is important to note that the pitch of a screw is not a metric measurement. In the following, we will define the 2 terms and discuss how they relate to 1 another.
A screw’s pitch is not the same in all countries. The United Kingdom, Canada, and the United States have standardized screw threads according to the UN system. Therefore, there is a need to specify the pitch of a screw shaft when a screw is being manufactured. The standardization of pitch and diameter has also reduced the cost of screw manufacturing. Nevertheless, screw threads are still expensive. The United Kingdom, Canada, and the United States have introduced a system for the calculation of screw pitch.
The pitch of a lead screw is the same as that of a lead screw. The diameter is 0.25 inches and the circumference is 0.79 inches. When calculating the mechanical advantage of a screw, divide the diameter by its pitch. The larger the pitch, the more threads the screw has, increasing its critical speed and stiffness. The pitch of a screw shaft is also proportional to the number of starts in the shaft.

Helix angle

The helix angle of a screw shaft is the angle formed between the circumference of the cylinder and its helix. Both of these angles must be equal to 90 degrees. The larger the lead angle, the smaller the helix angle. Some reference materials refer to angle B as the helix angle. However, the actual angle is derived from calculating the screw geometry. Read on for more information. Listed below are some of the differences between helix angles and lead angles.
High helix screws have a long lead. This length reduces the number of effective turns of the screw. Because of this, fine pitch screws are usually used for small movements. A typical example is a 16-mm x 5-inch screw. Another example of a fine pitch screw is a 12x2mm screw. It is used for small moves. This type of screw has a lower lead angle than a high-helix screw.
A screw’s helix angle refers to the relative angle of the flight of the helix to the plane of the screw axis. While screw helix angles are not often altered from the standard square pitch, they can have an effect on processing. Changing the helix angle is more common in two-stage screws, special mixing screws, and metering screws. When a screw is designed for this function, it should be able to handle the materials it is made of.

Size

The diameter of a screw is its diameter, measured from the head to the shaft. Screw diameters are standardized by the American Society of Mechanical Engineers. The diameters of screws range from 3/50 inches to 16 inches, and more recently, fractions of an inch have been added. However, shaft diameters may vary depending on the job, so it is important to know the right size for the job. The size chart below shows the common sizes for screws.
Screws are generally referred to by their gauge, which is the major diameter. Screws with a major diameter less than a quarter of an inch are usually labeled as #0 to #14 and larger screws are labeled as sizes in fractions of an inch. There are also decimal equivalents of each screw size. These measurements will help you choose the correct size for your project. The screws with the smaller diameters were not tested.
In the previous section, we described the different shaft sizes and their specifications. These screw sizes are usually indicated by fractions of an inch, followed by a number of threads per inch. For example, a ten-inch screw has a shaft size of 2” with a thread pitch of 1/4″, and it has a diameter of 2 inches. This screw is welded to a two-inch Sch. 40 pipe. Alternatively, it can be welded to a 9-inch O.A.L. pipe.

Shape

Screws come in a wide variety of sizes and shapes, from the size of a quarter to the diameter of a U.S. quarter. Screws’ main function is to hold objects together and to translate torque into linear force. The shape of a screw shaft, if it is round, is the primary characteristic used to define its use. The following chart shows how the screw shaft differs from a quarter:
The shape of a screw shaft is determined by 2 features: its major diameter, or distance from the outer edge of the thread on 1 side to the inner smooth surface of the shaft. These are generally 2 to 16 millimeters in diameter. Screw shafts can have either a fully threaded shank or a half-threaded shank, with the latter providing better stability. Regardless of whether the screw shaft is round or domed, it is important to understand the different characteristics of a screw before attempting to install it into a project.
The screw shaft’s diameter is also important to its application. The ball circle diameter refers to the distance between the center of 2 opposite balls in contact with the grooves. The root diameter, on the other hand, refers to the distance between the bottommost grooves of the screw shaft. These are the 2 main measurements that define the screw’s overall size. Pitch and nominal diameter are important measurements for a screw’s performance in a particular application.

Lubrication

In most cases, lubrication of a screw shaft is accomplished with grease. Grease is made up of mineral or synthetic oil, thickening agent, and additives. The thickening agent can be a variety of different substances, including lithium, bentonite, aluminum, and barium complexes. A common classification for lubricating grease is NLGI Grade. While this may not be necessary when specifying the type of grease to use for a particular application, it is a useful qualitative measure.
When selecting a lubricant for a screw shaft, the operating temperature and the speed of the shaft determine the type of oil to use. Too much oil can result in heat buildup, while too little can lead to excessive wear and friction. The proper lubrication of a screw shaft directly affects the temperature rise of a ball screw, and the life of the assembly. To ensure the proper lubrication, follow the guidelines below.
Ideally, a low lubrication level is appropriate for medium-sized feed stuff factories. High lubrication level is appropriate for larger feed stuff factories. However, in low-speed applications, the lubrication level should be sufficiently high to ensure that the screws run freely. This is the only way to reduce friction and ensure the longest life possible. Lubrication of screw shafts is an important consideration for any screw.

Product Description

Chinese Brand Agricultural Machinery 2.5 Ton Wheel Loader

Product Application

TL25 loader is our latest development of a medium-sized loader.
_{–Adopt CUMMINS, YUCHAI engine, powerful and reliable.
–Torque converter and counter-shaft trans mission gearbox, assembled separately, higher reliability and easier maintenance.
–Fully hydraulic steering system, powedr shift transmission, easier operation.
–Bucket can be leveled automatically, optimized working device, higher productivity.
–Comfortable operation environment, new desigh cabin, air-condition at option.
–Various working devices of attachment are available, such as log grapple, pipe fork, grass fork, CZPT bucket, snowblade, pallet fork etc. to meet different need.}

Main features
_{1)6.5ton operating weight,heavy duty!
2) Maximum speed 36km/h,fast!fast!fast!
3) Dumping height:3600mm!
4) Luxury appearance
5) With many attachments,all configuratin customer can choose.}

Standard Equipments
_{—Standard Bucket,
—Hydraulic Torque Converter Transmission,
—Floating Function,
—Mechanical Joystick,
—AC Cabin,
—Rops&Fops Cabin,
—Tipping Cabin,
—Luxury Cabin Inside,
—Backward Imagine,
—Comfortable Seat,
—Adjustable Steering Wheel,
—Wheel Reducer Axle,
—Air Brake,
—Lock for Lifting and Steering Cylinder,
—Hydraulic Pressure Check System,
—Parallel Linkage,
–E4 Lamp,
–Free Service Spare Parts etc}

Certifications
All the machine with CE ISO SGS certificate.

Attachments
Titan wheel loader adopts the Hydraulic Quick Hitch. All kinds of accessories can be replaced. Such as: log grapple, grab bucket, pallet fork, road sweeper, ripper, 4 in 1 bucket, snow blade, angle blade, grass fork, hay fork, screening bucket, hydraulic hammer, stick rake,auger and so on.

Our Service

Our trained Professional service team offers high quality in-time service in a very friendly way.
For a good customer experience, the content of pre -sales includes the recommendation on the right products basis on condition. All you have to do is to inform us your needs.
For After-sales, to minimize the downtime, we offer air delivery for the spare parts which are within guarantee within 3 working days.
We have professional technician to support trouble clearing and maintenance.

Pre-Sales Service
(1) Inquiry and consulting support. 
(2)Sample testing support. 
(3)View our Factory.

After-Sales Service
(1)Training how to instal the machine, training how to use the machine. 
(2)Engineers available to service machinery overseas.
Packing & Delivery
We use container transportation,according to your requirements,for you to choose the appropriate collccation If container is too tighber,we will use pefilm for packing or pack it accordfng to customers special requset.

About Us

                      HangZhou Titan Heavy Machinery Co. Ltd

HangZhou Titan Heavy Machinery Co. Ltd is a professional manufacturer engaged in the research, development, production, sale and service of wheel loader, excavator and forklift.
In addition, we have obtained many kinds of certificates SGS, ISO CE etc. Whether selecting a current product from our catalog orseeking engineering assistance for your application, you can talk to our customer service center about your sourcing requirements.
We sincerely thank all the friend’s support at home andabroad, look forward to establish development business cooperation with you, hand in hand advances boldly, create prosperity.
Our agent is interviewed by local TV station,give you a reason why choose titan.we provide our agents with technical support,service suport,exhibition support,price support,quality support and help them to open the local market and establish long-term cooperation.

FAQ

Q:Why choose Titan?
We sell every machine at a fair price.As our production increases,we are getting much support from the purchase source of raw meterial. 
We leave the maximum profit to customer.
1) Titan: an experienced loader manufacturer with over 11 years.
2) Titan team: customers-focused,you’ll get reply within 5 minutes.
3)Titan: premium quality with reasonable price.
4) Titan: CE,BV,SGS,ROPS and FOPS,ISO9001:2008 varified.
The quality control is not an empty word in TITAN.Our products are tested and granted CE cetificate.

Q:What is Titan warranty?
TITAN has a professional sales and after-service team.We are trying our best to make a good service for every customer.
1) Titan after-sales: life-long, meantime offer one year and 1 month warranty.
2) Titan proposal: order some wearing parts with loader for easy maintenance.

Q:What about Titan delivery term?
TITAN Transport packsging team helps our customer to transport their machine in safe and secure way without any damage.
10-20 days after down payment received.

Q:What about the payment term?
30% advance payment,70% balance by T/T.

Calculating the Deflection of a Worm Shaft

In this article, we’ll discuss how to calculate the deflection of a worm gear’s worm shaft. We’ll also discuss the characteristics of a worm gear, including its tooth forces. And we’ll cover the important characteristics of a worm gear. Read on to learn more! Here are some things to consider before purchasing a worm gear. We hope you enjoy learning! After reading this article, you’ll be well-equipped to choose a worm gear to match your needs.

Calculation of worm shaft deflection

The main goal of the calculations is to determine the deflection of a worm. Worms are used to turn gears and mechanical devices. This type of transmission uses a worm. The worm diameter and the number of teeth are inputted into the calculation gradually. Then, a table with proper solutions is shown on the screen. After completing the table, you can then move on to the main calculation. You can change the strength parameters as well.
The maximum worm shaft deflection is calculated using the finite element method (FEM). The model has many parameters, including the size of the elements and boundary conditions. The results from these simulations are compared to the corresponding analytical values to calculate the maximum deflection. The result is a table that displays the maximum worm shaft deflection. The tables can be downloaded below. You can also find more information about the different deflection formulas and their applications.
The calculation method used by DIN EN 10084 is based on the hardened cemented worm of 16MnCr5. Then, you can use DIN EN 10084 (CuSn12Ni2-C-GZ) and DIN EN 1982 (CuAl10Fe5Ne5-C-GZ). Then, you can enter the worm face width, either manually or using the auto-suggest option.
Common methods for the calculation of worm shaft deflection provide a good approximation of deflection but do not account for geometric modifications on the worm. While Norgauer’s 2021 approach addresses these issues, it fails to account for the helical winding of the worm teeth and overestimates the stiffening effect of gearing. More sophisticated approaches are required for the efficient design of thin worm shafts.
Worm gears have a low noise and vibration compared to other types of mechanical devices. However, worm gears are often limited by the amount of wear that occurs on the softer worm wheel. Worm shaft deflection is a significant influencing factor for noise and wear. The calculation method for worm gear deflection is available in ISO/TR 14521, DIN 3996, and AGMA 6022.
The worm gear can be designed with a precise transmission ratio. The calculation involves dividing the transmission ratio between more stages in a gearbox. Power transmission input parameters affect the gearing properties, as well as the material of the worm/gear. To achieve a better efficiency, the worm/gear material should match the conditions that are to be experienced. The worm gear can be a self-locking transmission.
The worm gearbox contains several machine elements. The main contributors to the total power loss are the axial loads and bearing losses on the worm shaft. Hence, different bearing configurations are studied. One type includes locating/non-locating bearing arrangements. The other is tapered roller bearings. The worm gear drives are considered when locating versus non-locating bearings. The analysis of worm gear drives is also an investigation of the X-arrangement and four-point contact bearings.

Influence of tooth forces on bending stiffness of a worm gear

The bending stiffness of a worm gear is dependent on tooth forces. Tooth forces increase as the power density increases, but this also leads to increased worm shaft deflection. The resulting deflection can affect efficiency, wear load capacity, and NVH behavior. Continuous improvements in bronze materials, lubricants, and manufacturing quality have enabled worm gear manufacturers to produce increasingly high power densities.
Standardized calculation methods take into account the supporting effect of the toothing on the worm shaft. However, overhung worm gears are not included in the calculation. In addition, the toothing area is not taken into account unless the shaft is designed next to the worm gear. Similarly, the root diameter is treated as the equivalent bending diameter, but this ignores the supporting effect of the worm toothing.
A generalized formula is provided to estimate the STE contribution to vibratory excitation. The results are applicable to any gear with a meshing pattern. It is recommended that engineers test different meshing methods to obtain more accurate results. One way to test tooth-meshing surfaces is to use a finite element stress and mesh subprogram. This software will measure tooth-bending stresses under dynamic loads.
The effect of tooth-brushing and lubricant on bending stiffness can be achieved by increasing the pressure angle of the worm pair. This can reduce tooth bending stresses in the worm gear. A further method is to add a load-loaded tooth-contact analysis (CCTA). This is also used to analyze mismatched ZC1 worm drive. The results obtained with the technique have been widely applied to various types of gearing.
In this study, we found that the ring gear’s bending stiffness is highly influenced by the teeth. The chamfered root of the ring gear is larger than the slot width. Thus, the ring gear’s bending stiffness varies with its tooth width, which increases with the ring wall thickness. Furthermore, a variation in the ring wall thickness of the worm gear causes a greater deviation from the design specification.
To understand the impact of the teeth on the bending stiffness of a worm gear, it is important to know the root shape. Involute teeth are susceptible to bending stress and can break under extreme conditions. A tooth-breakage analysis can control this by determining the root shape and the bending stiffness. The optimization of the root shape directly on the final gear minimizes the bending stress in the involute teeth.
The influence of tooth forces on the bending stiffness of a worm gear was investigated using the CZPT Spiral Bevel Gear Test Facility. In this study, multiple teeth of a spiral bevel pinion were instrumented with strain gages and tested at speeds ranging from static to 14400 RPM. The tests were performed with power levels as high as 540 kW. The results obtained were compared with the analysis of a three-dimensional finite element model.

Characteristics of worm gears

Worm gears are unique types of gears. They feature a variety of characteristics and applications. This article will examine the characteristics and benefits of worm gears. Then, we’ll examine the common applications of worm gears. Let’s take a look! Before we dive in to worm gears, let’s review their capabilities. Hopefully, you’ll see how versatile these gears are.
A worm gear can achieve massive reduction ratios with little effort. By adding circumference to the wheel, the worm can greatly increase its torque and decrease its speed. Conventional gearsets require multiple reductions to achieve the same reduction ratio. Worm gears have fewer moving parts, so there are fewer places for failure. However, they can’t reverse the direction of power. This is because the friction between the worm and wheel makes it impossible to move the worm backwards.
Worm gears are widely used in elevators, hoists, and lifts. They are particularly useful in applications where stopping speed is critical. They can be incorporated with smaller brakes to ensure safety, but shouldn’t be relied upon as a primary braking system. Generally, they are self-locking, so they are a good choice for many applications. They also have many benefits, including increased efficiency and safety.
Worm gears are designed to achieve a specific reduction ratio. They are typically arranged between the input and output shafts of a motor and a load. The 2 shafts are often positioned at an angle that ensures proper alignment. Worm gear gears have a center spacing of a frame size. The center spacing of the gear and worm shaft determines the axial pitch. For instance, if the gearsets are set at a radial distance, a smaller outer diameter is necessary.
Worm gears’ sliding contact reduces efficiency. But it also ensures quiet operation. The sliding action limits the efficiency of worm gears to 30% to 50%. A few techniques are introduced herein to minimize friction and to produce good entrance and exit gaps. You’ll soon see why they’re such a versatile choice for your needs! So, if you’re considering purchasing a worm gear, make sure you read this article to learn more about its characteristics!
An embodiment of a worm gear is described in FIGS. 19 and 20. An alternate embodiment of the system uses a single motor and a single worm 153. The worm 153 turns a gear which drives an arm 152. The arm 152, in turn, moves the lens/mirr assembly 10 by varying the elevation angle. The motor control unit 114 then tracks the elevation angle of the lens/mirr assembly 10 in relation to the reference position.
The worm wheel and worm are both made of metal. However, the brass worm and wheel are made of brass, which is a yellow metal. Their lubricant selections are more flexible, but they’re limited by additive restrictions due to their yellow metal. Plastic on metal worm gears are generally found in light load applications. The lubricant used depends on the type of plastic, as many types of plastics react to hydrocarbons found in regular lubricant. For this reason, you need a non-reactive lubricant.

Product Description

SUNYO / Chinese High Quality/  WZ30-25 Backhoe Loader  with Famous Brand Engine and Transmission. Widely used, flexible operation

The Backhoe Loader WZ30-25:
   WZ30-25 Backhoe loader, with CZPT  YC4A105Z-T20 engine , power is100hp, chinese axle and Trans. With A/C, pilot control, Reversing video, hammer pipe ,                                                                                                             WZ30-25 Backhoe loader Operating weight7600kg, front bucket 1.2 m3, rated loading is 2.5tons. Rear CZPT bucket is 0.3 m3,                                     
  It can  use for loading and digging, 1 machine has 2 functions. can help you to save much more cost. and can do many kinds work for building road, and so on.                                                                      
 It will bring you higher economic efficiency, Better profit income.

Main Performance Parameter of WZ30-25:

Backhoe Loader:
the backhoe loader also called a loader backhoe,is a heavy equipment vehicle that consists of a tractor fitted with a bucket on the front and a backhoe on the back. Due to its small size and versatility, backhoe loaders are very common in urban engineering and small construction projects (such as building a small house, fixing urban roads, etc.) as well as developing countries. This type of machine is similar to and derived from what is now known as a TLB (Tractor-Loader-Backhoe), which is to say, an agricultural tractor fitted with a front loader and rear backhoe attachment.

Packing & Shipping:
We have been engaged in foreign trade for more than 18 years and have very rich experience in shipping. According to the past situation, each of our products is complete and delivered to customers as planned.
Generally, For the WZ30-25 Backhoe loader , one set need 1 40H conainer, or 2 sets load into 1 40H container and 1 20 container.  it also can load in the bulk ship, or Ro-on/Ro-off ship. it according your requirements

Attachments:
Our backhoe loader can be with some more attachements excapt the standard bucket. for exmple the 4 in 1 bucket, Quick Change, Fork, Auger, Hamer, Grass Grab, Wooden Fork, Snow blade, sweaper, Rops And so on. 
Our Service :
Pre-sale service:
To our customers, before you buy the equipments, we hope to understand your needs, according to your machine requirements and your budget; choose the right model for you, to ensure that you buy high-quality products at a lower price.
At the same time, you are welcome to visit our factory in HangZhou, China; we will book hotels, air tickets and take you up from air port.
After-sale service:
After the sale, we will properly arrange the transportation of the machine to ensure that the goods are safely delivered to your hands.
At the same time, we will provide you with technical support 24 hours a day, or send engineers to CZPT the installation and operation. If there are any quality problems with the machine, we will solve it for you in the first time.

Factory View:

Here show some factory pictures to help you understand our company.
Exhibition:
Here show you some exhibition pictures . 
Certificate :
 

FAQ:
Q1: Which country do you export to?
Asia: Pakistan, Philippines, Thailand, Myanmar, Vietnam, Bangladesh, Kazakhstan, Turkmenistan, etc.
Middle East: Iran, UAE, Jordan, Oman, Saudi Arabia, Syria, etc.
Europe: Poland, Russia, Ukraine, Belarus, Bulgaria, etc.
Africa: South Africa,Kenya,Congo,Ethiopia,Nigeria,Ghana,Algeria,Senegal,Tunisia,etc.
South America: Paraguay, Colombia, Brazil, Peru, Chile, Cuba, Venezuela, etc.
Oceania: Australia, etc.

Q2: What is the proportion of your products export?
90% of our products are exported to all over the world.

Q3: What is the payment term?
We can discuss with you. Consider for long-term customers we are favorable payment terms TT, L/C, west union. It depends on the cooperation time, country and contract value.

Q4: What kind of logistic service do you supply?
FOB, CIF, C&F

Q5: What spare parts can you supply?
All kinds of spare parts of SUNYO JCM, SDLG, SHACMAN,  SHXIHU (WEST LAKE) DIS.I, YTO,  etc.

How to Determine the Quality of a Worm Shaft

There are many advantages of a worm shaft. It is easier to manufacture, as it does not require manual straightening. Among these benefits are ease of maintenance, reduced cost, and ease of installation. In addition, this type of shaft is much less prone to damage due to manual straightening. This article will discuss the different factors that determine the quality of a worm shaft. It also discusses the Dedendum, Root diameter, and Wear load capacity.

Root diameter

There are various options when choosing worm gearing. The selection depends on the transmission used and production possibilities. The basic profile parameters of worm gearing are described in the professional and firm literature and are used in geometry calculations. The selected variant is then transferred to the main calculation. However, you must take into account the strength parameters and the gear ratios for the calculation to be accurate. Here are some tips to choose the right worm gearing.
The root diameter of a worm gear is measured from the center of its pitch. Its pitch diameter is a standardized value that is determined from its pressure angle at the point of zero gearing correction. The worm gear pitch diameter is calculated by adding the worm’s dimension to the nominal center distance. When defining the worm gear pitch, you have to keep in mind that the root diameter of the worm shaft must be smaller than the pitch diameter.
Worm gearing requires teeth to evenly distribute the wear. For this, the tooth side of the worm must be convex in the normal and centre-line sections. The shape of the teeth, referred to as the evolvent profile, resembles a helical gear. Usually, the root diameter of a worm gear is more than a quarter inch. However, a half-inch difference is acceptable.
Another way to calculate the gearing efficiency of a worm shaft is by looking at the worm’s sacrificial wheel. A sacrificial wheel is softer than the worm, so most wear and tear will occur on the wheel. Oil analysis reports of worm gearing units almost always show a high copper and iron ratio, suggesting that the worm’s gearing is ineffective.

Dedendum

The dedendum of a worm shaft refers to the radial length of its tooth. The pitch diameter and the minor diameter determine the dedendum. In an imperial system, the pitch diameter is referred to as the diametral pitch. Other parameters include the face width and fillet radius. Face width describes the width of the gear wheel without hub projections. Fillet radius measures the radius on the tip of the cutter and forms a trochoidal curve.
The diameter of a hub is measured at its outer diameter, and its projection is the distance the hub extends beyond the gear face. There are 2 types of addendum teeth, 1 with short-addendum teeth and the other with long-addendum teeth. The gears themselves have a keyway (a groove machined into the shaft and bore). A key is fitted into the keyway, which fits into the shaft.
Worm gears transmit motion from 2 shafts that are not parallel, and have a line-toothed design. The pitch circle has 2 or more arcs, and the worm and sprocket are supported by anti-friction roller bearings. Worm gears have high friction and wear on the tooth teeth and restraining surfaces. If you’d like to know more about worm gears, take a look at the definitions below.

CZPT’s whirling process

Whirling process is a modern manufacturing method that is replacing thread milling and hobbing processes. It has been able to reduce manufacturing costs and lead times while producing precision gear worms. In addition, it has reduced the need for thread grinding and surface roughness. It also reduces thread rolling. Here’s more on how CZPT whirling process works.
The whirling process on the worm shaft can be used for producing a variety of screw types and worms. They can produce screw shafts with outer diameters of up to 2.5 inches. Unlike other whirling processes, the worm shaft is sacrificial, and the process does not require machining. A vortex tube is used to deliver chilled compressed air to the cutting point. If needed, oil is also added to the mix.
Another method for hardening a worm shaft is called induction hardening. The process is a high-frequency electrical process that induces eddy currents in metallic objects. The higher the frequency, the more surface heat it generates. With induction heating, you can program the heating process to harden only specific areas of the worm shaft. The length of the worm shaft is usually shortened.
Worm gears offer numerous advantages over standard gear sets. If used correctly, they are reliable and highly efficient. By following proper setup guidelines and lubrication guidelines, worm gears can deliver the same reliable service as any other type of gear set. The article by Ray Thibault, a mechanical engineer at the University of Virginia, is an excellent guide to lubrication on worm gears.

Wear load capacity

The wear load capacity of a worm shaft is a key parameter when determining the efficiency of a gearbox. Worms can be made with different gear ratios, and the design of the worm shaft should reflect this. To determine the wear load capacity of a worm, you can check its geometry. Worms are usually made with teeth ranging from 1 to 4 and up to twelve. Choosing the right number of teeth depends on several factors, including the optimisation requirements, such as efficiency, weight, and centre-line distance.
Worm gear tooth forces increase with increased power density, causing the worm shaft to deflect more. This reduces its wear load capacity, lowers efficiency, and increases NVH behavior. Advances in lubricants and bronze materials, combined with better manufacturing quality, have enabled the continuous increase in power density. Those 3 factors combined will determine the wear load capacity of your worm gear. It is critical to consider all 3 factors before choosing the right gear tooth profile.
The minimum number of gear teeth in a gear depends on the pressure angle at zero gearing correction. The worm diameter d1 is arbitrary and depends on a known module value, mx or mn. Worms and gears with different ratios can be interchanged. An involute helicoid ensures proper contact and shape, and provides higher accuracy and life. The involute helicoid worm is also a key component of a gear.
Worm gears are a form of ancient gear. A cylindrical worm engages with a toothed wheel to reduce rotational speed. Worm gears are also used as prime movers. If you’re looking for a gearbox, it may be a good option. If you’re considering a worm gear, be sure to check its load capacity and lubrication requirements.

NVH behavior

The NVH behavior of a worm shaft is determined using the finite element method. The simulation parameters are defined using the finite element method and experimental worm shafts are compared to the simulation results. The results show that a large deviation exists between the simulated and experimental values. In addition, the bending stiffness of the worm shaft is highly dependent on the geometry of the worm gear toothings. Hence, an adequate design for a worm gear toothing can help reduce the NVH (noise-vibration) behavior of the worm shaft.
To calculate the worm shaft’s NVH behavior, the main axes of moment of inertia are the diameter of the worm and the number of threads. This will influence the angle between the worm teeth and the effective distance of each tooth. The distance between the main axes of the worm shaft and the worm gear is the analytical equivalent bending diameter. The diameter of the worm gear is referred to as its effective diameter.
The increased power density of a worm gear results in increased forces acting on the corresponding worm gear tooth. This leads to a corresponding increase in deflection of the worm gear, which negatively affects its efficiency and wear load capacity. In addition, the increasing power density requires improved manufacturing quality. The continuous advancement in bronze materials and lubricants has also facilitated the continued increase in power density.
The toothing of the worm gears determines the worm shaft deflection. The bending stiffness of the worm gear toothing is also calculated by using a tooth-dependent bending stiffness. The deflection is then converted into a stiffness value by using the stiffness of the individual sections of the worm shaft. As shown in figure 5, a transverse section of a two-threaded worm is shown in the figure.

Product Description

SUNYO / Chinese High Quality/  WZ30-25 Backhoe Loader  with Famous Brand Engine and Transmission. Widely used, flexible operation

The Backhoe Loader WZ30-25:
   WZ30-25 Backhoe loader, with CZPT  YC4A105Z-T20 engine , power is100hp, chinese axle and Trans. With A/C, pilot control, Reversing video, hammer pipe ,                                                                                                             WZ30-25 Backhoe loader Operating weight7600kg, front bucket 1.2 m3, rated loading is 2.5tons. Rear CZPT bucket is 0.3 m3,                                     
  It can  use for loading and digging, 1 machine has 2 functions. can help you to save much more cost. and can do many kinds work for building road, and so on.                                                                      
 It will bring you higher economic efficiency, Better profit income.

Main Performance Parameter of WZ30-25:

Backhoe Loader :
the backhoe loader also called a loader backhoe,is a heavy equipment vehicle that consists of a tractor fitted with a bucket on the front and a backhoe on the back. Due to its small size and versatility, backhoe loaders are very common in urban engineering and small construction projects (such as building a small house, fixing urban roads, etc.) as well as developing countries. This type of machine is similar to and derived from what is now known as a TLB (Tractor-Loader-Backhoe), which is to say, an agricultural tractor fitted with a front loader and rear backhoe attachment.

Attachments:
Our backhoe loader can be with some more attachements excapt the standard bucket. for exmple the 4 in 1 bucket, Quick Change, Fork, Auger, Hamer, Grass Grab, Wooden Fork, Snow blade, sweaper, Rops And so on. 
Our Service :
Pre-sale service:
To our customers, before you buy the equipments, we hope to understand your needs, according to your machine requirements and your budget; choose the right model for you, to ensure that you buy high-quality products at a lower price.
At the same time, you are welcome to visit our factory in HangZhou, China; we will book hotels, air tickets and take you up from air port.
After-sale service:
After the sale, we will properly arrange the transportation of the machine to ensure that the goods are safely delivered to your hands.
At the same time, we will provide you with technical support 24 hours a day, or send engineers to CZPT the installation and operation. If there are any quality problems with the machine, we will solve it for you in the first time.

Factory View:

Here show some factory pictures to help you understand our company.
Exhibition:
Here show you some exhibition pictures . 
Certificate :
Packing & Shipping: 

We have been engaged in foreign trade for more than 18 years and have very rich experience in shipping. According to the past situation, each of our products is complete and delivered to customers as planned.
Generally, For the WZ30-25 Backhoe loader , one set need 1 40H conainer, or 2 sets load into 1 40H container and 1 20 container.  it also can load in the bulk ship, or Ro-on/Ro-off ship. it according your requirements
FAQ:
Q1: Which country do you export to?
Asia: Pakistan, Philippines, Thailand, Myanmar, Vietnam, Bangladesh, Kazakhstan, Turkmenistan, etc.
Middle East: Iran, UAE, Jordan, Oman, Saudi Arabia, Syria, etc.
Europe: Poland, Russia, Ukraine, Belarus, Bulgaria, etc.
Africa: South Africa,Kenya,Congo,Ethiopia,Nigeria,Ghana,Algeria,Senegal,Tunisia,etc.
South America: Paraguay, Colombia, Brazil, Peru, Chile, Cuba, Venezuela, etc.
Oceania: Australia, etc.

Q2: What is the proportion of your products export?
90% of our products are exported to all over the world.

Q3: What is the payment term?
We can discuss with you. Consider for long-term customers we are favorable payment terms TT, L/C, west union. It depends on the cooperation time, country and contract value.

Q4: What kind of logistic service do you supply?
FOB, CIF, C&F

Q5: What spare parts can you supply?
All kinds of spare parts of SUNYO JCM, SDLG, SHACMAN,  SHXIHU (WEST LAKE) DIS.I, YTO,  etc.

How to Select a Worm Shaft and Gear For Your Project

You will learn about axial pitch PX and tooth parameters for a Worm Shaft 20 and Gear 22. Detailed information on these 2 components will help you select a suitable Worm Shaft. Read on to learn more….and get your hands on the most advanced gearbox ever created! Here are some tips for selecting a Worm Shaft and Gear for your project!…and a few things to keep in mind.

Gear 22

The tooth profile of Gear 22 on Worm Shaft 20 differs from that of a conventional gear. This is because the teeth of Gear 22 are concave, allowing for better interaction with the threads of the worm shaft 20. The worm’s lead angle causes the worm to self-lock, preventing reverse motion. However, this self-locking mechanism is not entirely dependable. Worm gears are used in numerous industrial applications, from elevators to fishing reels and automotive power steering.
The new gear is installed on a shaft that is secured in an oil seal. To install a new gear, you first need to remove the old gear. Next, you need to unscrew the 2 bolts that hold the gear onto the shaft. Next, you should remove the bearing carrier from the output shaft. Once the worm gear is removed, you need to unscrew the retaining ring. After that, install the bearing cones and the shaft spacer. Make sure that the shaft is tightened properly, but do not over-tighten the plug.
To prevent premature failures, use the right lubricant for the type of worm gear. A high viscosity oil is required for the sliding action of worm gears. In two-thirds of applications, lubricants were insufficient. If the worm is lightly loaded, a low-viscosity oil may be sufficient. Otherwise, a high-viscosity oil is necessary to keep the worm gears in good condition.
Another option is to vary the number of teeth around the gear 22 to reduce the output shaft’s speed. This can be done by setting a specific ratio (for example, 5 or 10 times the motor’s speed) and modifying the worm’s dedendum accordingly. This process will reduce the output shaft’s speed to the desired level. The worm’s dedendum should be adapted to the desired axial pitch.

Worm Shaft 20

When selecting a worm gear, consider the following things to consider. These are high-performance, low-noise gears. They are durable, low-temperature, and long-lasting. Worm gears are widely used in numerous industries and have numerous benefits. Listed below are just some of their benefits. Read on for more information. Worm gears can be difficult to maintain, but with proper maintenance, they can be very reliable.
The worm shaft is configured to be supported in a frame 24. The size of the frame 24 is determined by the center distance between the worm shaft 20 and the output shaft 16. The worm shaft and gear 22 may not come in contact or interfere with 1 another if they are not configured properly. For these reasons, proper assembly is essential. However, if the worm shaft 20 is not properly installed, the assembly will not function.
Another important consideration is the worm material. Some worm gears have brass wheels, which may cause corrosion in the worm. In addition, sulfur-phosphorous EP gear oil activates on the brass wheel. These materials can cause significant loss of load surface. Worm gears should be installed with high-quality lubricant to prevent these problems. There is also a need to choose a material that is high-viscosity and has low friction.
Speed reducers can include many different worm shafts, and each speed reducer will require different ratios. In this case, the speed reducer manufacturer can provide different worm shafts with different thread patterns. The different thread patterns will correspond to different gear ratios. Regardless of the gear ratio, each worm shaft is manufactured from a blank with the desired thread. It will not be difficult to find 1 that fits your needs.

Gear 22’s axial pitch PX

The axial pitch of a worm gear is calculated by using the nominal center distance and the Addendum Factor, a constant. The Center Distance is the distance from the center of the gear to the worm wheel. The worm wheel pitch is also called the worm pitch. Both the dimension and the pitch diameter are taken into consideration when calculating the axial pitch PX for a Gear 22.
The axial pitch, or lead angle, of a worm gear determines how effective it is. The higher the lead angle, the less efficient the gear. Lead angles are directly related to the worm gear’s load capacity. In particular, the angle of the lead is proportional to the length of the stress area on the worm wheel teeth. A worm gear’s load capacity is directly proportional to the amount of root bending stress introduced by cantilever action. A worm with a lead angle of g is almost identical to a helical gear with a helix angle of 90 deg.
In the present invention, an improved method of manufacturing worm shafts is described. The method entails determining the desired axial pitch PX for each reduction ratio and frame size. The axial pitch is established by a method of manufacturing a worm shaft that has a thread that corresponds to the desired gear ratio. A gear is a rotating assembly of parts that are made up of teeth and a worm.
In addition to the axial pitch, a worm gear’s shaft can also be made from different materials. The material used for the gear’s worms is an important consideration in its selection. Worm gears are usually made of steel, which is stronger and corrosion-resistant than other materials. They also require lubrication and may have ground teeth to reduce friction. In addition, worm gears are often quieter than other gears.

Gear 22’s tooth parameters

A study of Gear 22’s tooth parameters revealed that the worm shaft’s deflection depends on various factors. The parameters of the worm gear were varied to account for the worm gear size, pressure angle, and size factor. In addition, the number of worm threads was changed. These parameters are varied based on the ISO/TS 14521 reference gear. This study validates the developed numerical calculation model using experimental results from Lutz and FEM calculations of worm gear shafts.
Using the results from the Lutz test, we can obtain the deflection of the worm shaft using the calculation method of ISO/TS 14521 and DIN 3996. The calculation of the bending diameter of a worm shaft according to the formulas given in AGMA 6022 and DIN 3996 show a good correlation with test results. However, the calculation of the worm shaft using the root diameter of the worm uses a different parameter to calculate the equivalent bending diameter.
The bending stiffness of a worm shaft is calculated through a finite element model (FEM). Using a FEM simulation, the deflection of a worm shaft can be calculated from its toothing parameters. The deflection can be considered for a complete gearbox system as stiffness of the worm toothing is considered. And finally, based on this study, a correction factor is developed.
For an ideal worm gear, the number of thread starts is proportional to the size of the worm. The worm’s diameter and toothing factor are calculated from Equation 9, which is a formula for the worm gear’s root inertia. The distance between the main axes and the worm shaft is determined by Equation 14.

Gear 22’s deflection

To study the effect of toothing parameters on the deflection of a worm shaft, we used a finite element method. The parameters considered are tooth height, pressure angle, size factor, and number of worm threads. Each of these parameters has a different influence on worm shaft bending. Table 1 shows the parameter variations for a reference gear (Gear 22) and a different toothing model. The worm gear size and number of threads determine the deflection of the worm shaft.
The calculation method of ISO/TS 14521 is based on the boundary conditions of the Lutz test setup. This method calculates the deflection of the worm shaft using the finite element method. The experimentally measured shafts were compared to the simulation results. The test results and the correction factor were compared to verify that the calculated deflection is comparable to the measured deflection.
The FEM analysis indicates the effect of tooth parameters on worm shaft bending. Gear 22’s deflection on Worm Shaft can be explained by the ratio of tooth force to mass. The ratio of worm tooth force to mass determines the torque. The ratio between the 2 parameters is the rotational speed. The ratio of worm gear tooth forces to worm shaft mass determines the deflection of worm gears. The deflection of a worm gear has an impact on worm shaft bending capacity, efficiency, and NVH. The continuous development of power density has been achieved through advancements in bronze materials, lubricants, and manufacturing quality.
The main axes of moment of inertia are indicated with the letters A-N. The three-dimensional graphs are identical for the seven-threaded and one-threaded worms. The diagrams also show the axial profiles of each gear. In addition, the main axes of moment of inertia are indicated by a white cross.

Product Description

PRODUCT DESCRIPTION

3.0 Ton Diesel Forklift

VIFT forklift advantages:
1.Power System. VIFT forklifts are all with reliable power accessories,like CZPT Engine. All accessories are support by domestic and world famous brand, high quality, reliable after-sales.We follow the strict environmental design,all engines match the China or even higher emission standards.
2.Super comfortable. VIFT forklifts are all with comfortable driving space,adjustable steering wheel and seats,super low and non-slip step,suspension steering axle,storing space,and convenient LCD panel.
3.VIFT forklift can equip with different attachments according to your need.

Engine Option