Hansheng Automation (Dongguan) Co., Ltd. is one of the most experienced manufacturers and suppliers of inner gear in China. If you're going to wholesale bulk cost-effective inner gear made in China, welcome to get pricelist and quotation from our factory. Also, customized service and OEM&ODM service are available.
Hansheng Automation is a high-precision parts manufacturer specializing in gear manufacturing, precision CNC machining, and precision castings. It specializes in providing non-standard customized parts for food packaging machinery, tobacco packaging machinery, printing machinery and other fields.
Product Features
Exceptional Precision
Our gears achieve ISO/DIN Class 5 precision, ensuring flawless tooth profiles and smooth meshing.
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Advanced Manufacturing
Our core equipment utilizes the Kashifuji KPS30 power shaving machine from Japan.
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Compact & Space-Saving
Internal gears, also known as internal meshing gears, enable compact structural design. This meshing configuration achieves higher gear ratios and torque output within limited space.
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High Torque Capacity
We optimize tooth profiles and load distribution to enhance torque and shock load resistance, extending service life.
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Fully Customizable
From material selection (alloy steel, stainless steel, specialty materials) and heat treatment processes (carburizing, nitriding) to custom module, tooth count, and special tooth profiles, we manufacture entirely according to your drawings and application requirements.
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Technical Parameters
| Parameter | Specification & Capability |
|---|---|
| Gear Precision | ISO / DIN / GB Level 5 |
| Module | 0.1 – 5.0 |
| Tip Diameter | 3mm – 300mm |
| Materials | Alloy steel (20CrMnTi, 42CrMo), Stainless Steel, customizable according to customer requirements |
| Heat Treatment | Carburizing, Nitriding, High-Frequency Hardening |
| Surface Hardness | HRC 58-62 or according to process requirements |
| Processing Technology | Power Skiving, Gear Shaping, WEDM |
| Surface Finish | Grinding, Black Oxide, Plating |
Our Technical Edge

Core Equipment - Kashifuji Gear Skiving Machine KPS30
Ultra-precision machining covers every stage: From precision grinding and milling with a ±0.005mm accuracy to ultra-mirror finishing with ±0.002mm accuracy, tooth profile accuracy is guaranteed throughout the entire process.
Strict quality inspection: We utilize professional gear testing equipment to conduct 100% inspection of key parameters such as tooth profile, pitch, and runout, ensuring that every product meets the required standards.
Application Fields
Robotics & Automation
Industrial robot joint reducers, precision rotary stages, and automated actuators.
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Automotive Industry
Planetary gear trains in automatic transmissions (ATs), differentials in electric vehicles, and steering systems.
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High-End Machinery
Examples include internal gear pumps, printing machinery, and precision machine tools.
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Medical Equipment
Used in surgical robots, CT scanners, and other equipment with extremely high requirements for noise and precision.
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FAQ
Q: Can you customize internal gears according to our drawings?
A: Of course, customization is one of our core capabilities. Please send us your drawings (available in CAD, STP, or PDF formats) and technical requirements, and our team of engineers will contact you within 24 hours.
Q: What are the specific advantages of your skiving process compared to traditional gear shaping?
A: There are three main advantages:
1) High Efficiency: Processing speeds are 3-5 times faster than traditional gear shaping, significantly reducing lead times.
2) High Precision: Single-clamping eliminates secondary positioning errors, resulting in improved tooth profile accuracy and surface quality.
3) High Flexibility: More complex internal gear configurations can be produced without the need for expensive broaching tools.
Q: What information do I need to provide for an accurate quote?
A: Please provide the following information: gear drawing, material grade, heat treatment requirements, accuracy grade, purchase quantity, and any special surface treatment requirements.
Q: What is your minimum order quantity (MOQ)?
A: We support requests ranging from single prototypes to large-scale production. We understand the need for small and multiple batches during the R&D phase of new projects. Please feel free to contact us for discussions.
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