Why the Hand-E Finger Tips are loose?

Context

Some users may notice a slight looseness in the Hand‑E gripper fingertips, especially when using custom-designed extensions. This article explains when such play is expected, what can cause excessive looseness, and how to address it.

1. Normal Behavior

• A small amount of play in the Hand‑E fingertips is normal and by design.

• It ensures smooth mechanical operation and is generally not a concern.

2. Causes of Excessive Looseness

• Custom fingertips that are too long
  Longer fingertip designs amplify existing mechanical play, making it more noticeable.

• Contamination from fluids
  Fluids like cutting oil can mix with or displace the original Mobilith SHC1500 grease, which reduces grip adhesion and leads to increased movement between parts.

3. Solution

To restore optimal fingertip behavior:

Disassemble, Clean, Regrease, and Reassemble

Follow the “Rack and Pinion Mechanism Cleaning” procedure in Section 6.3 of the Hand‑E Instruction Manual.

Summary of steps:

1. Disassemble the fingertips and expose the rack-and-pinion mechanism.

2. Wipe off any contaminated or old grease.

3. Apply fresh Mobilith SHC1500 grease as specified.

4. Reassemble the gripper carefully.

Tighten Screws for Custom Fingertips

Ensure that the screws connecting custom fingertips to the internal gripper racks are properly torqued.

4. Use the Recommended Grease Only

Always use Mobilith SHC1500 or the equivalent factory-specified lubricant. Using the wrong type of grease can:

• Reduce grip consistency

• Lead to premature wear

• Worsen looseness over time

Conclusion

Some play in the Hand‑E fingertips is expected, but if you experience excessive looseness, follow the steps above to clean, regrease, and secure the components.