What is a thumb on an excavator?

With an AMI Attachments Hydraulic Thumb, your excavator goes from digging to complete material handling. A Hydraulic Thumb makes it easier to pick, hold and move awkward material such as rocks, concrete, branches, and debris that does not fit into the bucket.

What is a hydraulic thumb?

The hydraulic thumb is a versatile attachment that can easily pick up bulky materials such as big rocks, debris, trees and logs with precision. The hydraulic thumb for backhoes, excavators and mini-excavators are easy to control and open and close with speed and accuracy.

Can you add a thumb to an excavator?

They can dig fine with the thumb in a useful position. Just not good at getting heaping buckets and can be in the way in certain times. Set the thumb in the ground and take the pressure out, pull the pin, reposition the arm so the thumb is out of the way and Re pin it. Very easy and quick.

How does a manual thumb on an excavator work?

With a manual thumb you have to push a the thumb again the item to be picked up and then close the bucket. With a hydraulic thumb you could clamp with either one. The manual thumb is a PITA to change positions. It would be even more PITA on a good sized excavator.

How do you install a hydraulic thumb excavator?

Steps to install hydraulic thumbs in excavators

  1. Park your excavator on a level and smooth ground surface. …
  2. Now, place the hydraulic thumb close to the edge of the excavator’s arm on the ground. …
  3. Mount the Thumb pad to the stick of the excavator and then connect it with the hydraulics.
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What is a mechanical thumb on a backhoe?

The mechanical thumb for a backhoe attaches to the boom and has 5 possible positions to help you stabilize materials which are hard to control. Simply fold it back or slide out of the way when not in use. … A mismatched thumb will result in damage to your backhoe, as larger backhoes have more bucket force.

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