4 in stock · ships from Charlotte, NC
Thumbs
Turn the excavator into a grab. Hydraulic and mechanical thumbs sized to the stick, not just the machine.
What it is for
A thumb is the highest-return attachment most excavator owners never buy. It converts a digging machine into a handling machine for pipe, logs, demolition debris, boulders and root balls, without a second machine, an operator, or a trailer move.
Hydraulic thumbs articulate under power and can hold, rotate and place a load precisely; mechanical thumbs are pinned to a set of positions and are cheaper, lighter and effectively unbreakable. If you handle irregular material every week, buy hydraulic. If you clear brush twice a year, mechanical is the sane purchase.
The critical dimension is not the machine's tonnage. It is the stick length and the bucket you intend to clamp against. A thumb matched to a short stick will not close against a long-stick bucket, and the two will fight each other at the top of the arc.
How to size it
Match the thumb to the machine's weight class AND the bucket it will oppose. A thumb should close so the tine tips meet roughly the middle third of the bucket's curl, giving you a positive grip on both small debris and a full bucket. Progressive-link hydraulic thumbs hold that relationship through the whole arc; a straight-cylinder thumb only grips well in part of it, which is fine for logs and poor for mixed demolition debris.
In stock
4 thumbs
Which machines is this for
39 machines in our database take a thumb
Graded on operating weight, pin diameter and coupler style, not on a marketing compatibility list. Pick yours to see only the units that pin to it.
…and 11 more. Browse every machine.
Straight answers
Before you order
Do I need auxiliary hydraulics for a thumb?
For a hydraulic thumb, yes: one double-acting auxiliary circuit at the stick. Most machines built in the last fifteen years have it plumbed or pre-plumbed. A mechanical thumb needs no hydraulics at all and can be fitted to any machine with the right stick bracket.
Will a thumb damage my stick?
Not if it is mounted correctly. The mount spreads load into the stick's boxed structure rather than a single weld bead, and on most machines it bolts or pins to existing bosses. What does damage sticks is using the thumb as a pry bar against a fixed object. The thumb is a clamp, not a lever.
Can I keep using my regular bucket with a thumb fitted?
Yes. A well-matched thumb parks back along the stick and out of the way, so normal digging is unaffected. That is why buying the thumb sized to the bucket you already run matters: it stays out of your way when it is not working.
