Boxin · Hengzhen · Botrust
Precision Manufacturing・Powering the World
Planetary gear
This component is made of 20CrMnTi (carburized and quenched alloy steel) and serves as one of the core elements of the first-stage planetary gear set in an RV reducer. It performs power splitting and preliminary speed reduction, offering high load capacity, high precision, and excellent wear resistance and durability. It is widely used in precision transmission applications such as industrial robot joints and CNC machine tools.
- Product Description
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1. Basic Information and Positioning
- Associated Device : The RV110E series precision reducer (Rotary Vector Reducer) is a high-rigidity cycloidal planetary reducer commonly used in industrial robots and automation equipment.
- Component Role : Belongs to the reducer First-stage planetary gear transmission mechanism , in conjunction with the sun gear and the internal ring gear, it achieves power splitting and preliminary speed reduction (with a typical gear ratio of 3 to 10), providing a stable input for the subsequent cycloidal pinwheel transmission.
- Model Association “110E” is the model series designation, corresponding to the 110‑size unit in the RV‑E series. This series emphasizes a flat, compact design and high‑rigidity output.
2. Material and Process Characteristics
- Materials ：20CrMnTi Low-carbon alloy carburizing steel is a classic material for precision gears.
- Heat treatment process: carburizing and quenching followed by low-temperature tempering; the tooth surface hardness can reach HRC58-63 , with a tough core that balances high wear resistance and impact toughness.
- Processing advantages: High-precision gear profile machining can be achieved through precision rolling and gear grinding, resulting in smooth meshing, low noise, and compliance with the low-backlash requirements of gear reducers.
3. Structural Features
- Appearance : Standard involute external‑tooth cylindrical gears, with the outer circumference evenly toothed, designed for planetary gear drives featuring simultaneous engagement of multiple teeth.
- Internal bore structure : The center features a splined bore (with internal splines visible in the illustration), which mates with the planetary shaft or carrier to transmit torque, enabling combined rotation and revolution.
- Auxiliary structure The gear end face features symmetrically distributed process holes (indicated by black dots in the figure), which are used for mounting and positioning or for weight‑reduction optimization; this is a typical design for the planetary gears of RV reducers.
4. Performance and Application Value
- Core Advantages : Multi-tooth meshing combined with 20CrMnTi material enables uniform load distribution under high loads, significantly enhancing the reducer’s load-carrying capacity and fatigue life while maintaining transmission accuracy and rigidity.
- Compatible Scenarios : In applications such as industrial robot joints, CNC machine tool rotary tables, and automated production lines—where transmission accuracy, stiffness, and reliability are of paramount importance—RV reducers serve as one of the key components enabling high reduction ratios and low backlash.
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