China factory China Foundry Supplier Steel Gray Iron Ductile Iron Resin CZPT Worm Gear with Machining spurs gear

Product Description


HangZhou Worth Engineering Technology Co., Ltd. founded in 2001 , Company is located in the Chinese ancient city — HangZhou. Our company has been engaged in producing custom made engineering accessories, OEM/ODM spare parts and industrial components for many years, including CHINAMFG parts and investment casting spare parts, forging parts, sheet metal stamping spare parts, machined parts and plastic parts, which are widely used in petrochemical, automobile, chemical, environmental protection , machinery, construction, agriculture, aerospace, marine hardware and other industries.



Sand casting accessories and cnc machining part for engine, refrigerator and air conditioner, fan, compressor, pump, flange, washer, coupling, gearbox case, shaft, valve and strainer, tractor, automotive, motor rotor, electronic case, computer,  water treatment equipment. Weight of products range from 0.5kgs to 10tons. The usually used materials are ductile iron, gray iron, high chrome iron, many kinds of steel, brass, copper, aluminum and wear resistant material, etc.
Process: sand casting+cnc machining+deburrs
Tolerance: +/-0.05mm
Surface: deburrs,degrease,chamfer
Service available: OEM & ODM
Quality control: 0 defects,100% inspection before packing
Delivery time: 30 days after confirm the drawing
Packing:   Inner:bubble poly bag; Outer:5 layers ctn box or poly wooden box/pallet
Logistics service:  sea,air,express,EXW,FOB,CIF,DDU,DDP

Warranty:   100% refund or replacement for NOK pcs

Our Services

1, R&D service                       2, Drawing design service
3, Samples service                  4, Bulk production service
5, Inspection service               6, Packing&shipping service

Packaging & Shipping

Inside:bubble bag
Outside:carton case or poly wooden case
Small batch by courier, large batch by sea or air


1. ISO9001-2008
2. SGS
3. Material Certificate
4. CIQ…

Company Capabilities:

(1).CNC machining parts
(2).The fabrication
(3).The mechanical assemble
(4).The Surface treatment

Plating :3+Cr,environmental,anti-corrosion maximum 480 hours salt spray test
Coating:powder coating,electrcial coating,maximum 480 hours salt spray test
Painting:environmental EXPOSY painting,cross-cutting test
Polish:satin polish,mirror polish,electrical polish, maximum 1200 grid
Dacromet:evironmental,anti-corrosion,maximum 560 hours salt spary test
Anodization:tumble,shot blast,sand blast…..,various color,maximum 480 hours salt spray test
Nylok:tight-locking,environmental,5 million times
Heat Treatment:adjust the mechanical properties,temper,normalization,quench……
(5).The Variousl Material
stainless steel:SS304,SS304L,SS316,SS316L,SS430,SS201……
steel alloy:25CrMo,42CrMo,25Cr,40Cr,Q345,11SMn30……
iron cast:QT600,QT250,HT450,HT150……
titanium alloy:GR2,GR5,GR7,GR9……
tungsten alloy:WuNiFe alloy,Carbide Wolfram……
the blanks:stamping parts,forging parts,die casting parts,profile,extrusion……

the plastic:PP,PE,POM,Acrylic,ABS,Delrin……









Q1. How to customize products?                                                                                                
A2: Attach your drawings with details (material, surface treatment, quantity and special requirements etc).    

Q2: Can you make the parts based on the sample?
A3: Yes, we could provide a rough cost and will measure and design the drawing according your sample.

Q3: Can my design be safe after sending it to you?
A5: We can CHINAMFG the NDA before you send it.
Q4. How long will it take to get the quotation?                                                                       
A6: We will give you the quotation within 24 hours (Considering the time difference).    
Q5. How does the company control the quality?                                                                  
A7: Inspection product with professional equipment , like CMM, height gauge, caliper & micrometer,quadratic equipment .



Type: Clay Wet Sand
Casting Method: Directional Crystallization
Sand Core Type: Clay Sand Core
Application: Auto Parts
Machining: CNC Machining
Material: Aluminium & Aluminum Alloy


Customized Request

worm gear

How does a worm gear impact the overall efficiency of a system?

A worm gear has a significant impact on the overall efficiency of a system due to its unique design and mechanical characteristics. Here’s a detailed explanation of how a worm gear affects system efficiency:

A worm gear consists of a worm (a screw-like gear) and a worm wheel (a cylindrical gear with teeth). When the worm rotates, it engages with the teeth of the worm wheel, causing the wheel to rotate. The main factors influencing the efficiency of a worm gear system are:

  • Gear Reduction Ratio: Worm gears are known for their high gear reduction ratios, which are the ratio of the number of teeth on the worm wheel to the number of threads on the worm. This high reduction ratio allows for significant speed reduction and torque multiplication. However, the larger the reduction ratio, the more frictional losses occur, resulting in lower efficiency.
  • Mechanical Efficiency: The mechanical efficiency of a worm gear system refers to the ratio of the output power to the input power, accounting for losses due to friction and inefficiencies in power transmission. Worm gears typically have lower mechanical efficiency compared to other gear types, primarily due to the sliding action between the worm and the worm wheel teeth. This sliding contact generates higher frictional losses, resulting in reduced efficiency.
  • Self-Locking: One advantageous characteristic of worm gears is their self-locking property. Due to the angle of the worm thread, the worm gear system can prevent the reverse rotation of the output shaft without the need for additional braking mechanisms. While self-locking is beneficial for maintaining position and preventing backdriving, it also increases the frictional losses and reduces the efficiency when the gear system needs to be driven in the opposite direction.
  • Lubrication: Proper lubrication is crucial for minimizing friction and maintaining efficient operation of a worm gear system. Inadequate or improper lubrication can lead to increased friction and wear, resulting in lower efficiency. Regular lubrication maintenance, including monitoring viscosity, cleanliness, and lubricant condition, is essential for optimizing efficiency and reducing power losses.
  • Design and Manufacturing Quality: The design and manufacturing quality of the worm gear components play a significant role in determining the system’s efficiency. Precise machining, accurate tooth profiles, proper gear meshing, and appropriate surface finishes contribute to reducing friction and enhancing efficiency. High-quality materials with suitable hardness and smoothness also impact the overall efficiency of the system.
  • Operating Conditions: The operating conditions, such as the load applied, rotational speed, and temperature, can affect the efficiency of a worm gear system. Higher loads, faster speeds, and extreme temperatures can increase frictional losses and reduce overall efficiency. Proper selection of the worm gear system based on the expected operating conditions is critical for optimizing efficiency.

It’s important to note that while worm gears may have lower mechanical efficiency compared to some other gear types, they offer unique advantages such as high gear reduction ratios, compact design, and self-locking capabilities. The suitability of a worm gear system depends on the specific application requirements and the trade-offs between efficiency, torque transmission, and other factors.

When designing or selecting a worm gear system, it is essential to consider the desired balance between efficiency, torque requirements, positional stability, and other performance factors to ensure optimal overall system efficiency.

worm gear

What are the environmental considerations when using worm gears?

When using worm gears, there are several environmental considerations to keep in mind. Here’s a detailed explanation of these considerations:

  1. Lubrication: Proper lubrication is essential for the efficient and reliable operation of worm gears. Lubricants help reduce friction and wear between the gear teeth, resulting in improved efficiency and extended gear life. When selecting lubricants, it is important to consider their environmental impact. Environmentally friendly lubricants, such as biodegradable or synthetic lubricants with low toxicity, can be used to minimize the potential harm to the environment in case of leakage or accidental spills.
  2. Leakage and contamination: Worm gear systems are susceptible to lubricant leakage, which can cause environmental pollution. It is important to ensure that the gear housing is properly sealed to prevent lubricant leakage into the environment. Regular inspections and maintenance should be carried out to detect and repair any leaks promptly. Additionally, measures should be taken to prevent contaminants such as dust, dirt, and water from entering the gear system, as they can degrade the lubricant and affect the gear performance.
  3. Energy efficiency: Worm gears, like any mechanical power transmission system, consume energy during operation. It is important to consider energy efficiency when selecting and designing worm gear systems. Optimal gear design, proper gear selection, and efficient lubrication practices can contribute to reducing energy consumption and minimizing the environmental impact associated with energy use.
  4. Noise and vibration: Worm gears can generate noise and vibration during operation. Excessive noise can contribute to noise pollution, while high vibration levels can impact the surrounding equipment and structures. To mitigate these effects, it is important to design and manufacture worm gears with low noise and vibration characteristics. This can involve careful gear design, proper lubrication, and the use of vibration-damping materials or mechanisms.
  5. End-of-life considerations: At the end of their service life, worm gear components may need to be replaced or recycled. Disposal of worn-out gears should be done in accordance with applicable environmental regulations. Whenever possible, recycling or reusing gear components can help reduce waste and minimize the environmental impact associated with the disposal of gear materials.
  6. Environmental regulations: Compliance with environmental regulations and standards is crucial when using worm gears. Different regions may have specific regulations governing the use and disposal of lubricants, materials, and manufacturing processes associated with gear systems. It is important to stay informed about these regulations and ensure compliance to avoid any adverse environmental impact and legal consequences.

By considering these environmental factors, it is possible to minimize the ecological footprint of worm gear systems and promote sustainable practices in their use and maintenance. This includes selecting environmentally friendly lubricants, implementing proper sealing and maintenance procedures, optimizing energy efficiency, and adhering to relevant environmental regulations.

worm gear

What is the purpose of a self-locking feature in a worm gear?

A self-locking feature in a worm gear serves the purpose of preventing reverse motion or backdriving of the gear system. When a worm gear is self-locking, it means that the worm can rotate the worm wheel, but the reverse action is hindered or restricted, providing a mechanical holding or braking capability. This self-locking feature offers several advantages and is utilized in various applications. Here are the key purposes of the self-locking feature:

  • Mechanical Holding: The self-locking capability of a worm gear allows it to hold a specific position or prevent unintended movement when the worm is not actively driving the system. This is particularly useful in applications where it is necessary to maintain a fixed position or prevent the gear from rotating due to external forces or vibrations. Examples include elevators, lifts, and positioning systems.
  • Backdriving Prevention: The self-locking feature prevents the worm wheel from driving the worm in the reverse direction. This is advantageous in applications where it is crucial to prevent a load or external force from causing the gear to rotate backward. For instance, in a lifting mechanism, the self-locking feature ensures that the load remains suspended without requiring continuous power input.
  • Enhanced Safety: The self-locking property of a worm gear contributes to safety in certain applications. By preventing unintended or undesired motion, it helps maintain stability and reduces the risk of accidents or uncontrolled movement. This is particularly important in scenarios where human safety or the integrity of the system is at stake, such as in heavy machinery or critical infrastructure.

It’s important to note that not all worm gears are self-locking. The self-locking characteristic depends on the design parameters, specifically the helix angle of the worm’s thread. A higher helix angle increases the self-locking tendency, while a lower helix angle reduces or eliminates the self-locking effect. Therefore, when selecting a worm gear for an application that requires the self-locking feature, it is essential to consider the specific design parameters and ensure that the gear meets the necessary requirements.

China factory China Foundry Supplier Steel Gray Iron Ductile Iron Resin CZPT Worm Gear with Machining spurs gearChina factory China Foundry Supplier Steel Gray Iron Ductile Iron Resin CZPT Worm Gear with Machining spurs gear
editor by CX 2023-10-02