| Attachment Features |
Helac PowerGrip® |
Cylinder Style Hydraulic Thumb |
| Mounting Configuration |
Integral with Bucket |
Attached to Dipper Arm |
| Weight Penalty of Attachment |
Minor |
Moderate |
| Constant Swing Speed |
Yes |
No |
| Constant Clamp Force Thru Full Rotation |
Yes |
No |
| Single Function Control in Handling Materials |
Yes |
No |
Holding Torque Approx. 3X Clamp Force |
Yes |
No |
| Integral Load Holding and Pressure Control Manifold |
Yes |
No |
| Operating Mechanism |
Integral with Sliding Spline Rotary Actuator |
Exposed Cylinder and Rod |
| Pins, Bushings and Linkage in Mechanism |
No |
Yes |
| More Than Two Grease Fittings |
No |
Yes |