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.
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 |
Data Snapshot
| Full Name | Zhejiang Double-Ring Transmission Co., Ltd. |
|---|---|
| Founded | 2005 |
| Headquarters | Taizhou, Zhejiang, China |
| Stock Code | 002470.SZ |
| Core Products | RV reducers, precision gears, planetary roller screws |
| Market Position | Double-Ring Transmission is a major Chinese maker of RV reducers and planetary roller screws, key components for industrial and humanoid robot joints. |
| Status | Leading Chinese RV reducer maker |
Products & Specs
- RV reducers
- precision gears
- planetary roller screws
- RV-E and lightweight RV reducers for robot joints.
- Planetary roller screw assemblies for linear actuation.
- High-precision gear manufacturing.
Key Customers & Applications
- 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.
- Double-Ring masters whole-process gear machining, heat treatment and assembly.
- High-strength steel sourced domestically.
- Competes with Japanese Nabtesco on price in China.
Recent Milestones
- 2005 — Founded in Taizhou
- Today — 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.
Global Benchmark
Double-Ring is China's answer to Japan's Nabtesco, the near-monopolist of precision RV reducers. Where Nabtesco still dominates premium six-axis industrial joints, Double-Ring (002470.SZ) has built domestic RV scale, precision gears and — critically for the current cycle — planetary roller screws for humanoid actuators. Its bet mirrors the harmonic-drive story of Leaderdrive (绿的谐波): win the Chinese joint-component market on price and delivery as robot volumes explode, then ride the humanoid joint demand that could need dozens of precision reducers and screws per unit.
Frequently Asked Questions
What does Double-Ring Transmission do?
Double-Ring Transmission (双环传动) is a Chinese robotics-component supplier focused on RV reducers, precision gears, planetary roller screws. Core components — motors, reducers, sensors, screws and drives — are where China is rapidly building self-sufficiency.
How does Double-Ring Transmission compare with global component leaders like Harmonic Drive or Maxon?
Chinese component makers such as Double-Ring Transmission are challenging incumbents like Harmonic Drive (reducers) and Maxon (motors) on price and delivery. Double-Ring Transmission differentiates on RV reducers, precision gears, planetary roller screws, often with comparable specs at lower cost.
Where is Double-Ring Transmission based?
Double-Ring Transmission (双环传动) is headquartered in Taizhou, Zhejiang, China, China.