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China Standard Precision and Complex Internal Ring Gears Used in Coal Mining Machine Equipment worm gear motor

Product Description

Product Description

Product introduction

Gear parameter table
name numerical value
normal module 5
number of teeth 55
profile angle 20
helix angle 10 °
accuracy class 5
material quality 18CrNiMo7-6
heat treatment method carburizing and quenching
surface hardness HRC58-62
Core hardness HRC35-45

My advantages:
1. High quality materials, professional production, high-precision equipment. Customized design and processing;
2. Strong and durable, strong strength, large torque and good comprehensive mechanical properties;
3. High rotation efficiency, stable and smooth transmission, long service life, noise reduction and shock absorption;
4. Focus on gear processing for 20 years.
5. Carburizing and quenching of tooth surface, strong wear resistance, reliable operation and high bearing capacity;
6. The tooth surface can be ground, and the precision is higher after grinding.




The maximum machining diameter of our company’s cylindrical gears is 1250mm, and the machining modulus ranges from 0.5 to 20. The highest accuracy level of gears can reach international GB11365-89 4. The commonly used materials are 18CrNiMo7-6/20Cr2Ni4A/20CrNi2MoA/20CrMnTi/20CrMnMo/42CrMo, etc. The commonly used heat treatment processes are carburizing, quenching, nitriding, and quenching and tempering. Widely used in various fields such as aerospace, rail transit, mining and metallurgy, engineering vehicles, port machinery and ships, industrial gearboxes, industrial automation, etc.

       HangZhou Ke’an Transmission Machinery Co., Ltd. is a professional manufacturer of high-precision gear transmission parts. The company is located in HangZhou City, HangZhou, a land of fish and rice in the south of the Yangtze River. It is adjacent to the Xiake Exit of the HangZhouang Expressway for 6 kilometers, the HangZhou South Exit of the Xihu (West Lake) Dis. (ZheJiang ZheJiang ) Expressway for 6 kilometers, and the HangZhou Station of the South HangZhouang High speed Railway for 6 kilometers. The location is superior and the transportation is very convenient. The company has an annual production capacity of more than 35000 high-precision gear transmission parts.
       The company has 6 American Gleason CHINAMFG 275G/800G CNC spiral bevel gear grinding machines, German Kappa VX55/59 CNC gear grinding center, Swiss Mager KS-42 high-precision straight bevel gear grinding machine, Swiss Stuart high-precision CNC internal and external cylindrical grinding machine, German ZEISS coordinate measuring instrument and a set of American Gleason 1500GMM gear measuring center, which can collect and detect the profile of the tooth. It has a complete set of heat treatment production line of EPSON controlled atmosphere multi-purpose furnace, with more than 200 hosts and supporting equipment. The product has complete detection means, and is equipped with precision detection instruments such as material physical and chemical analysis, mechanical property test, ultrasonic flaw detection, magnetic particle flaw detection, etc. The gear processing modulus ranges from 0.5 to 20, and the highest accuracy level can reach international GB11365-89 level 4. The products are widely used in aerospace, rail transit, mining and metallurgy, engineering vehicles, port machinery and ships, industrial gear boxes, industrial automation and other different fields.
       With professional manufacturing experience and strong design and development ability, the company can conduct mapping or design various non-standard special high-precision gear parts according to the technical parameters provided by users. Tight GB/T19001-2016/ISO9001:2015/AS9100D-2016 quality management system certification, perfect ERP process management and MES information management ensure the controllability of product quality management. The company has passed the CCS classification society factory certification of China Classification Society, and is praised by the industry for its excellent products, reasonable prices, short production cycle, timely service and other advantages.
       The company adheres to the corporate spirit of “diligence and pragmatism, exploration and innovation”, and the business philosophy of “professional casting quality, integrity winning the world”. It shoulders the mission of having strong gears and strong equipment, and strives to make greater contributions to the world’s transmission.






Main Markets? North America, South America, Eastern Europe , West Europe , North Europe, South Europe, Asia
How to order? * You send us drawing or sample
* We carry through project assessment
* We give you our design for your confirmation
* We make the sample and send it to you after you confirmed our design
* You confirm the sample then place an order and pay us 30% deposit
* We start producing
* When the goods is done, you pay us the balance after you confirmed pictures or tracking numbers.
* Trade is done, thank you!!

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Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery, Car
Hardness: Hardened Tooth Surface
Gear Position: External Gear
Manufacturing Method: Rolling Gear
Toothed Portion Shape: Spur Gear
Material: Cast Steel


Customized Request

How do internal gears differ from other types of gears?

Internal gears differ from other types of gears in several ways. Here’s a detailed explanation of the differences between internal gears and other gear types:

  • Tooth Orientation: One of the primary differences is the orientation of the teeth. In internal gears, the teeth are located on the inner surface of the gear, facing inward. This is in contrast to external gears, where the teeth are on the outer surface, facing outward. This difference in tooth orientation allows internal gears to encircle and engage with an external gear, resulting in a unique gear arrangement.
  • Space Utilization: Internal gears are particularly advantageous in terms of space utilization. By having the teeth facing inward, internal gears can enclose and engage with an external gear, creating a compact and space-saving gear system. This design is beneficial in applications where size constraints are a concern, as it allows for a more efficient use of available space.
  • Meshing Mechanism: The meshing mechanism of internal gears differs from that of other gear types. In external gears, the teeth of two gears engage on their outer surfaces. However, in internal gears, the teeth of the internal gear engage with the teeth of an external gear (pinion) on the inner surface. This meshing mechanism enables the transfer of rotational motion and torque between the gears.
  • Torque Capacity: Internal gears generally have a higher torque capacity compared to external gears of the same size. This is because the larger tooth size and greater surface area of the internal gear provide increased strength and load-carrying capacity. The internal gear’s ability to encircle the pinion also contributes to its enhanced torque-carrying capabilities.
  • Gear Arrangement: Internal gears are commonly used in specific gear arrangements, such as planetary gear systems and differential gears. Planetary gear systems involve multiple gears, including an internal gear, sun gear, and planet gears. The unique arrangement of internal and external gears in a planetary system allows for various gear ratios and torque distribution. Differential gears, which are used in vehicles, employ internal gears to distribute torque between the drive wheels while accommodating independent wheel movement.
  • Noise and Vibration: Internal gears generally exhibit reduced noise and vibration compared to other gear types. The inward-facing teeth of internal gears result in a larger contact area with the pinion, distributing the load over a greater surface area. This helps minimize noise and vibration during gear operation, leading to smoother and quieter performance.

In summary, internal gears differ from other gear types in terms of tooth orientation, space utilization, meshing mechanism, torque capacity, gear arrangement, and noise and vibration characteristics. The inward-facing teeth, compact design, unique meshing mechanism, higher torque capacity, specific gear arrangements, and reduced noise and vibration make internal gears suitable for various applications where size constraints, torque transmission, and smooth operation are important factors.

China Standard Precision and Complex Internal Ring Gears Used in Coal Mining Machine Equipment worm gear motorChina Standard Precision and Complex Internal Ring Gears Used in Coal Mining Machine Equipment worm gear motor
editor by Dream 2024-04-29


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