Thumbs

A hydraulic thumb opens and closes from inside the cab using auxiliary hydraulics, giving full grapple-style control while digging. A fixed thumb is welded at one angle and works well for repetitive sorting tasks where constant adjustment is not needed.

Select a thumb based on your excavator's weight class and bucket width. The thumb tines should align with the bucket lip for secure clamping. Most manufacturers offer thumb sizing charts to match your machine model.

Yes. Many hydraulic thumbs are designed to remain attached when using a quick coupler system. Confirm the thumb's mounting bracket is compatible with your specific coupler model before purchasing.

Thumbs grip irregularly shaped objects including boulders, tree stumps, logs, concrete slabs, pipes, scrap metal, and demolished building materials. These items would roll or slip out of a standard bucket without the clamping force of a thumb.

A properly installed thumb adds minimal weight and does not significantly impact digging performance. When positioned back against the stick during normal digging, it stays out of the way and allows full bucket breakout force.