How to Perform Preventive Maintenance on the Hand-E Gripper

Context

This article explains how to perform preventive maintenance on the Robotiq Hand-E gripper using the HND-MAINTENANCE-KIT. Maintenance should be done every 2 million cycles to ensure optimal performance, durability, and cleanliness of internal components.

Information

1. When to Perform Maintenance

• Perform maintenance every 2 million cycles.

• Signs of need may include inconsistent motion, debris buildup, or reduced grip performance.

2. Tools and Kit Required

• HND-MAINTENANCE-KIT

• 4 mm hex key

• Degreaser

• Dry towels

• Safety gloves and eyewear

3. Maintenance Procedure

1. Position the Gripper

   • Open the gripper to an intermediate position to ensure the six M4 screws on the rack housing are accessible.

     
     
     

2. Detach the Gripper from the Coupling

   • Use a 4 mm hex key to remove the four (4) M5-0.8 x 25mm screws.

   • Each screw includes a tooth lock washer—make sure not to lose them.

     

3. Remove the Rack Housing

   • Unscrew the six (6) M4 screws that hold the rack housing in place.

   • Carefully pull the rack housing away from the gripper body.

     

4. Extract and Clean Moving Parts

   • The two finger racks will slide off freely.

   • Clean the following with degreaser, then dry thoroughly:

     • Rack housing

     • Finger racks

     • Pinion

   • Use a dry towel to clean:

     • Finger holders

     • Fingertips

     • Coupling (especially the electrical contact area)

     
     
     
     

5. Replace Damaged Racks or Pinions (if necessary)

   • Inspect the racks and pinion for:

     • Broken or chipped teeth

     • Uneven wear

     • Rust or corrosion

   • If damage is found:

     • Replace the component using the spare parts included in the HND-MAINTENANCE-KIT

     • Follow the same reassembly steps after replacement

6. Greasing the Racks

   • Apply grease on all surfaces of the racks except the face with the tapped holes.

   • Ensure even coverage and no excess grease on contact surfaces.

     

    

7. Final Inspection and Reassembly

   • Visually confirm:

     • All cleaned areas are free of debris

     • Electrical contact is clear

     • No visible damage

   • Reassemble all components in reverse order:

     • Reinsert finger racks into rack housing

     • Reattach housing to the gripper body

     • Secure the gripper to the coupling using the M5 screws and washers

     
     
     
     

Conclusion

Performing regular maintenance on the Hand-E gripper extends its life, ensures safe operation, and maintains precise performance. Always follow the recommended 2-million-cycle schedule and use the official HND-MAINTENANCE-KIT.

Watch the full video tutorial: Hand-E Maintenance Video

Updated

December 2025