PSM‘s progressive link hydraulic thumb is specially designed to allow the thumb to follow the bucket through its 162-degree rotation arc when installed with a quick coupler. This gives the hydraulic thumb a full range of motion extending out and around the coupler while extending the maximum operating range of the excavator. The Maximum Rotation thumb is fully line bored with hardened pins and bushings and uses T-1 steel components for strength and longevity.
PSM’s rotation innovation allows thumb to follow bucket
June 13, 2005