ERG Series Electric Rotary Gripper
Innovative integrated design combining rotation motor and gripper in one unit for combined rotation + gripping motion. Supports infinite or ±360° rotation with controllable grip force — ideal for cap tightening, rotary assembly, workpiece flipping, and thread inspection.
Rotary Grip Integrated Solution
The ERG Series features dual independent motor drives — rotation and gripping axes controlled by separate servo motors for independent or synchronized motion. High-precision harmonic drive on the rotation axis delivers high accuracy and torque with infinite continuous rotation.
Gripping side integrates force sensors for force-controlled gripping and drop detection. Built-in pneumatic/electrical slip rings maintain air and power connections during rotation for vacuum cups or other end-of-arm tools. Widely used in F&B cap tightening, 3C screw fastening, automotive rotary assembly, and pharma reagent tube capping.
Key Advantages
Infinite Rotation
360° infinite continuous rotation for multi-turn operations like cap tightening and wire winding — no angular limits.
High-Precision Rotation
Harmonic drive transmission with ±0.01° rotational repeatability for precision assembly.
Force-Controlled Grip
Adjustable 5–200N grip force with integrated force sensor (±5% accuracy) to prevent workpiece damage.
Slip Ring Design
Built-in pneumatic/electrical slip rings maintain connections during rotation — supports vacuum cups and other tools.
Independent Control
Independent motor drives for rotation and gripping support complex motion trajectory programming.
Multiple Communication Protocols
Modbus RTU/EtherCAT support for fast integration with robots and automation systems.
Specifications
| Parameter | ERG-20 | ERG-50 |
| Rated Grip Force | 5-20N | 20-200N |
| Grip Stroke (per side) | 8mm | 16mm |
| Rotation Angle | Infinite rotation | |
| Rotary Repeatability | ±0.01° | ±0.02° |
| Rated Rotary Torque | 0.5N·m | 2N·m |
| Body Weight | 650g | 1.2kg |
| Communication Protocol | Modbus RTU/EtherCAT | |
Typical Applications
Pharmaceutical
Reagent tube and centrifuge tube capping
Food & Beverage
Cap opening/tightening
Automotive Manufacturing
Bolt tightening, parts assembly
3C Electronics
Screw fastening, connector rotation
Get Rotary Grip Integrated Solutions
Combined rotation + gripping motion — all-in-one solution for rotary automation needs