Database · Core Components
Double-Ring Transmission
Double-Ring Transmission is a major Chinese maker of RV reducers and planetary roller screws, key components for industrial and humanoid robot joints.
Reducer RV Screw Listed
Company Overview
- Double-Ring started in automotive gears and expanded into robot reducers, becoming China's primary domestic RV reducer maker.
- Its RV-E series serves heavy-load industrial robot joints, while lightweight versions target humanoids.
- Planetary roller screws position it for linear-actuator-style humanoid joints.
Key Facts
| Full Name | Zhejiang Double-Ring Transmission Co., Ltd. |
|---|---|
| Chinese Name | 浙江双环传动机械股份有限公司 |
| Founded | 2005 |
| Headquarters | Taizhou, Zhejiang, China |
| Stock Code | 002470.SZ |
| Core Products | RV reducers, precision gears, planetary roller screws |
| Status | Leading Chinese RV reducer maker |
Actuators & Sensors
- RV-E and lightweight RV reducers for robot joints.
- Planetary roller screw assemblies for linear actuation.
- High-precision gear manufacturing.
Supply-Chain Analysis
- Double-Ring masters whole-process gear machining, heat treatment and assembly.
- High-strength steel sourced domestically.
- Competes with Japanese Nabtesco on price in China.
Competitor Comparison
Versus Nabtesco (Japan): Double-Ring wins on localization and price. Versus domestic peers, it leads in RV reducer scale and has a growing humanoid socket.