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3FG25 Three-Finger Gripper
The OnRobot 3FG25 is an electric three-finger gripper for collaborative robots, designed to handle cylindrical, spherical, and irregularly shaped parts. It provides software-controlled grip patterns, adjustable force, and operates without compressed air or external controllers. The 3FG25 is intended for applications where part geometry is inconsistent or non-parallel gripping is required.
Common uses include:
- Handling round or irregular components
- Machine tending for cast or forged parts
- Assembly operations requiring centering grip
- Pick-and-place of objects unsuitable for parallel grippers
A combination of the below options are included with your purchase depending on the model selected:
- 1x robot side quick changer
- 1x tool mounting flange
- 1x cabling kit
- 1x robot kit (The robot kit is required for Ethernet IP communication and software updates for all OnRobot tooling.)
Key Technical Specifications
| General Properties | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Payload | - | - | 25 | kg |
| Stroke (total) | - | - | 155 | mm |
| Gripping force (per finger) | 50 | - | 250 | N |
| Repeatability | ±0.05 | mm | ||
| Grip modes | Centric, parallel | |||
| Hold workpiece on power loss | Yes | |||
| Power supply | 20 | 24 | 25 | V DC |
| IP classification | IP54 | |||
| Weight | 2.8 | kg | ||
| Operating temperature | 0 | - | 50 | °C |
Electric Three-Finger Gripping
The gripper uses three independently driven fingers that can be configured through software for different grip modes.
Key characteristics:
- Electric operation with no pneumatic supply
- Three-finger centric and parallel grip modes
- Software-adjustable gripping force and stroke
- Designed for collaborative robot payload limits
Collaborative Robot Compatibility
The 3FG25 integrates with major collaborative robot platforms using robot-specific mechanical and software interfaces.
Supported cobot brands include:
- Universal Robots
- FANUC (CRX Series)
- ABB
- KUKA
- Doosan Robotics
- Techman Robot
Integration and Setup
- Single electrical interface to the robot
- No pneumatic supply required
- Software configuration via robot interface
- Compatible with OnRobot Quick Changer

Sample image only. Product may differ

