Utility Thumbs

326 mm (13 in) 8 Teeth/2 Tine Utility Thumb for 3 Ton Mini Excavators


30.4 in

Stored Height

11.5 in

Overall Width

12.8 in


Cat® Utility Thumbs offer a cost-effective thumb design with hydraulic thumb control, combined with wide compatibility with machines, buckets and couplers.

Detailed Equipment Specifications

  • Length

    30.4 in

    771 mm

  • Stored Height

    11.5 in

    291 mm

  • Overall Width

    12.8 in

    326 mm

  • Weight

    152.1 lb

    69 kg

  • Rotation

    93.0 in

    93.0 mm

    117 degrees

  • Number of Teeth/Tines

    93.0 in

    93.0 mm


  • Tine Spacing

    9.2 in

    233 mm

  • Tine Thickness

    0.6 in

    16 mm

  • Tines Included

    93.0 in

    93.0 mm


  • Machine Class

    93.0 in

    93.0 mm

    3 Ton Mini Excavators

  • Interface Type

    93.0 in

    93.0 mm

    Pin On


Cat® Utility thumbs are utilitarian in design. This style is perfect for the excavator that could benefit from a thumb for handling smaller size and lighter weight material on an occasional basis. They are best suited for the machine that does not handle material all day long.


Utility thumbs are universal in that they work well with most all buckets and couplers. They are well-suited for fleets with a mix of machines with varying bucket and coupler combinations.

Easy Installation

An optional bracket can be welded onto the stick allowing for an easy installation if machine was not already fitted with one from the factory.

Cylinder Snubber

A snubber in the thumb cylinder cushions the thumb as it retracts to it's stored position, thus reducing wear on components from unnecessary jolts and frees operator to focus on other tasks.

Shut-Off Valves/Quick Couplings

Allows for attachment of other work tools without removing thumb (ex. Hammer). The shut-off valve also functions as a hydraulic lock when not in use. Quick couplings allow the thumb to be disconnected and another tool used while the thumb is still attached to the stick.

Retractable Thumb

Retractable thumb allows normal bucket loading when not in use.

Cross-Tube Design

Maintains rigidity while offering optimized visibility for better site into bucket when lifting irregular loads.

Thumb Tine Spacing

Optimized tine and bucket tooth spacing allows thumb and bucket to mesh together without interference. Different width buckets can be used with the same thumb for maximum flexibility.

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