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ASPINA Electric Three-Finger Grippers

ASPINA Electric Three-Finger Grippers

The ASPINA ARH350A and ARH305B are electric three-finger grippers for handling round, cylindrical, and other workpiece shapes. Both models feature adjustable gripping parameters, replaceable fingers, and a hollow channel for cable or tube routing. ARH350A provides a higher-force option, while ARH305B is designed for lightweight and delicate parts. The Aspina DOBOT+ plug-in supports connection setup, status retrieval, and basic gripping control on compatible DOBOT CRA and Nova series robots.

Product Highlights

  • Wide Opening Range
    Both models offer a maximum opening diameter of 143 mm with standard fingers, accommodating workpieces of different sizes within the applicable gripping conditions.

  • Adjustable Gripping Parameters
    The grippers support adjustable gripping force, position, and operating speed. Model selection provides higher-force handling with ARH350A or lower-force handling of lightweight parts with ARH305B.

  • Hollow Channel and Replaceable Fingers
    The central hollow channel accommodates cable or tube routing for optional equipment. Replaceable fingers allow workpiece-specific finger shapes, with additional components selected for the application.

  • DOBOT+ Integration
    The Aspina DOBOT+ plug-in provides connection setup and testing, status retrieval, and basic gripping control through DobotStudio Pro for supported CRA and Nova series robots.

Application

Pick-and-Place
Transfers round or cylindrical components between workstations, with gripping conditions selected for the workpiece geometry, material, and weight.

Assembly and Inspection Handling
Supports component handling in automated assembly and inspection setups, using finger shapes and gripping settings suited to the application.

Specifications

Specifications

Parameter ARH350A ARH305B
Maximum opening diameter Ø143 mm Ø143 mm
Gripping force, per finger at 30 mm 50 N 5 N
Maximum workpiece weight at 70 mm grip point 500 g 50 g
Maximum workpiece weight at 30 mm grip point 3,000 g 300 g
Full-stroke opening/closing time 0.8–10 s 0.25–10 s
Maximum finger length 100 mm 100 mm
Positioning repeatability, no load ±0.05 mm ±0.05 mm
Gripper weight 640 g 640 g
Supply voltage 24 V ±10% 24 V ±10%
Peak current during rated operation 0.6 A 0.6 A
Native serial interface RS-485, Modbus RTU RS-485, Modbus RTU
Gripper IP rating IP2X IP2X
Operating ambient temperature 0–40°C 0–40°C

Grip-point distances are measured from the finger rotation center. Workpiece weight capacity depends on the workpiece material, finger configuration, and gripping conditions. The robot’s payload limits also apply. Opening/closing times refer to a full-stroke movement.

 

Robot & Software Requirements

Compatible Robot Series Minimum Software Version
DOBOT CRA series DobotStudio Pro V4.6.6.0-stable or later
DOBOT Nova series DobotStudio Pro V4.6.6.0-stable or later

Integration Method: DOBOT+ plug-in

 

DOBOT+ Plug-in

Plug-in: Aspina_v1-0-0-stable

 

Manufacturer Links

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* The above data is the test results obtained by Dobot Laboratory under controlled experimental conditions, which may have slight differences from those in actual application scenarios.

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