China Hot selling Worm Shaft Brass / Alloy Steel / Ductile Iron Worm Gear bevel gearbox

Product Description

Material grade

SUS304N

SUS304L

density

6.4-6.7g/CM³

6.6-6.9g/CM³

Sintering hardness

HRB45-75

HRB40-70

Sintering strength

390MPaMIN

300MPaMIN

Rust prevention performance

Salt spray test 48HMIN

Salt spray test 48HMIN

Certifications

ISO9001/TS16949

Surface Treatment

High Frequency quenching, Oil impregnation

Apperance

No Crumbling, Cracks, Exfoliation, Voids, Metal Pitting and Other Defects

Process Flow

Powder mixing – Forming – Sintering – Oil impregnation – Sizing -Ultrasonic Cleaning – Steam Oxidation – Oil impregnation – Final inspection – Packing

Application

Industry,Vehicle, Power Tools, Motor, Bicycle, Electrombile

1.Q:Are you trading company or manufacturer?
A: We are factory with more then 15years experience
2.Q: How long is your delivery time?
A: Generally it is 15-30days as we are Customized service we confirm with Customer
when place order
3.Q:Do you provide samples? ls it free or extra?
A: Yes we provide samples .for sample charge as per sample condition to decide free
or charged ,usually for not too much time used consumed machining process are free
4.Q:What is your terms of payment?
30% T/T in advance balance before shipment .Or as per discussion
5.Q: Can we know the production process without visiting the factory?
A:We will offer detailed production schedule and send weekly reports with digital
pictures and videos which show the machining progress
6.Q:Available for customized design drawings?
A: YesDWG.DXF.DXW.IGES.STEP. PDF etc
7.Q:Available for customized design drawings?
A: Yes ,we can CHINAMFG the NDA before your send the drawing
8.Q:How do you guarantee the quality?
A:(1) Checking the raw material after they reach our factory——
Incoming quality control(IQC)
(2) Checking the details before the production line operated
(3) Have a full inspection and routing inspection during mass production—
In-process quality control(IPQC)
(4) Checking the goods after they are finished—- Final quality control(FQC)
(5) Checking the goods after they are finished—–Outgoing quality control(QC)
(6)100% inspection and delivery before shipment.
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Application: Motorcycle, Car, Vehicle
Hardness: Hardened Tooth Surface
Manufacturing Method: Cast Gear
Toothed Portion Shape: Spur Gear
Material: Stainless Steel
Type: Worm And Wormwheel
Samples:
US$ 2/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

worm gear

What are the advantages and disadvantages of using a worm gear?

A worm gear offers several advantages and disadvantages that should be considered when selecting it for a specific application. Here’s a detailed explanation of the advantages and disadvantages of using a worm gear:

Advantages of using a worm gear:

  • High gear reduction ratio: Worm gears are known for their high gear reduction ratios, which allow for significant speed reduction and torque multiplication. This makes them suitable for applications that require precise motion control and high torque output.
  • Compact design: Worm gears have a compact design, making them space-efficient and suitable for applications where size is a constraint. The worm gear’s compactness allows for easy integration into machinery and equipment with limited space.
  • Self-locking capability: One of the key advantages of a worm gear is its self-locking property. The angle of the worm thread prevents the reverse rotation of the output shaft, eliminating the need for additional braking mechanisms. This self-locking feature is beneficial for maintaining position and preventing backdriving in applications where holding the load in place is important.
  • Quiet operation: Worm gears typically operate with reduced noise levels compared to other gear types. The sliding action between the worm and the worm wheel teeth results in smoother and quieter operation, making them suitable for applications where noise reduction is desired.
  • High shock-load resistance: Worm gears have good shock-load resistance due to the sliding contact between the worm and the worm wheel teeth. This makes them suitable for applications that involve sudden or intermittent loads, such as lifting and hoisting equipment.
  • Easy installation and maintenance: Worm gears are relatively easy to install and maintain. They often come as a compact unit, requiring minimal assembly. Lubrication maintenance is crucial for optimal performance and longevity, but it is typically straightforward and accessible.

Disadvantages of using a worm gear:

  • Lower efficiency: Worm gears tend to have lower mechanical efficiency compared to some other gear types. The sliding action between the worm and the worm wheel teeth generates higher frictional losses, resulting in reduced efficiency. However, efficiency can be improved through careful design, quality manufacturing, and proper lubrication.
  • Limited speed capability: Worm gears are not suitable for high-speed applications due to their sliding contact and the potential for heat generation. High speeds can lead to increased friction, wear, and reduced efficiency. However, they excel in low to moderate speed applications where high torque output is required.
  • Heat generation: The sliding action between the worm and the worm wheel generates friction, which can result in heat generation. In high-load or continuous-duty applications, this heat buildup can affect the efficiency and longevity of the system. Proper lubrication and heat dissipation measures are necessary to mitigate this issue.
  • Less suitable for bidirectional motion: While worm gears offer excellent self-locking capabilities in one direction, they are less efficient and less suitable for bidirectional motion. Reversing the direction of the input or output shaft can lead to increased friction, reduced efficiency, and potential damage to the gear system.
  • Lower accuracy in positioning: Worm gears may have lower accuracy in positioning compared to some other gear types, such as precision gear systems. The sliding contact and inherent backlash in worm gears can introduce some degree of positioning error. However, for many applications, the accuracy provided by worm gears is sufficient.
  • Potential for wear and backlash: Over time, the sliding action in worm gears can lead to wear and the development of backlash, which is the play or clearance between the worm and the worm wheel teeth. Regular inspection, maintenance, and proper lubrication are necessary to minimize wear and reduce backlash.

When considering the use of a worm gear, it’s essential to evaluate the specific requirements of the application and weigh the advantages against the disadvantages. Factors such as torque requirements, speed limitations, positional stability, space constraints, and overall system efficiency should be taken into account to determine if a worm gear is the right choice.

worm gear

Can worm gears be used in heavy-duty machinery and equipment?

Yes, worm gears can be used in heavy-duty machinery and equipment. Here’s a detailed explanation of their suitability for such applications:

1. High torque transmission: One of the key advantages of worm gears is their ability to transmit high torque. The unique design of the worm and worm wheel allows for efficient torque generation and power transmission. This makes worm gears well-suited for heavy-duty applications that require the transfer of substantial rotational forces.

2. Compact size: Worm gears offer a compact and space-saving solution for heavy-duty machinery. Their compact design allows for the transmission of high torque in a relatively small package. This is particularly advantageous in applications where space constraints or compact design requirements are present.

3. Self-locking feature: Worm gears exhibit a self-locking characteristic, meaning that the worm can prevent the back-driving of the gear system. This feature is beneficial in heavy-duty machinery where it is essential to maintain a fixed position or prevent the system from reversing under load. The self-locking capability of worm gears provides stability and safety in various heavy-duty applications.

4. High gear ratios: Worm gears can achieve high gear ratios, which is advantageous in heavy-duty machinery that requires precise speed reduction. The high gear ratios allow for fine control of rotational speed and torque output, enabling the gear system to match the requirements of heavy loads and demanding operating conditions.

5. Durable construction: Worm gears are typically manufactured using robust materials such as alloy steels, cast iron, or bronze. These materials offer excellent strength, wear resistance, and durability, making worm gears capable of withstanding the heavy loads and harsh operating environments encountered in heavy-duty machinery.

6. Overload protection: The unique design of worm gears provides inherent overload protection. When the load exceeds the gear’s capacity, the sliding action between the worm and worm wheel causes a high frictional force, limiting the torque transmission and preventing damage to the gear system. This overload protection feature is valuable in heavy-duty machinery where sudden load spikes or unexpected overloads can occur.

7. Wide range of applications: Worm gears find applications in various heavy-duty machinery and equipment across different industries. Some examples include cranes, winches, elevators, mining machinery, construction equipment, rolling mills, heavy-duty conveyors, and marine propulsion systems. The versatility of worm gears makes them suitable for a wide range of heavy-duty applications.

It is important to note that while worm gears offer several advantages for heavy-duty machinery, there are certain considerations to keep in mind. These include proper lubrication to minimize friction and wear, adequate cooling to manage heat generation, proper alignment to ensure efficient power transmission, and regular maintenance to inspect for signs of wear or damage. By addressing these factors, worm gears can reliably and effectively meet the demands of heavy-duty machinery and equipment.

worm gear

How do you calculate the gear ratio of a worm gear?

Calculating the gear ratio of a worm gear involves determining the number of teeth on the worm wheel and the pitch diameter of both the worm and worm wheel. Here’s the step-by-step process:

  1. Determine the number of teeth on the worm wheel (Zworm wheel). This information can usually be obtained from the gear specifications or by physically counting the teeth.
  2. Measure or determine the pitch diameter of the worm (Dworm) and the worm wheel (Dworm wheel). The pitch diameter is the diameter of the reference circle that corresponds to the pitch of the gear. It can be measured directly or calculated using the formula: Dpitch = (Z / P), where Z is the number of teeth and P is the circular pitch (the distance between corresponding points on adjacent teeth).
  3. Calculate the gear ratio (GR) using the following formula: GR = (Zworm wheel / Zworm) * (Dworm wheel / Dworm).

The gear ratio represents the speed reduction and torque multiplication provided by the worm gear system. A higher gear ratio indicates a greater reduction in speed and higher torque output, while a lower gear ratio results in less speed reduction and lower torque output.

It’s worth noting that in worm gear systems, the gear ratio is also influenced by the helix angle and lead angle of the worm. These angles determine the rate of rotation and axial movement per revolution of the worm. Therefore, when selecting a worm gear, it’s important to consider not only the gear ratio but also the specific design parameters and performance characteristics of the worm and worm wheel.

China Hot selling Worm Shaft Brass / Alloy Steel / Ductile Iron Worm Gear bevel gearboxChina Hot selling Worm Shaft Brass / Alloy Steel / Ductile Iron Worm Gear bevel gearbox
editor by CX 2024-03-26