Snubber Arm -- Description

P&H Mining uses a hydraulic damping control system, called SnubRite®, on all its electric power shovels. This patented device 
is self-contained and uses a cushion of oil to dampen door travel. Two damping controls are used, one on each side of the dipper.

The snubber arm is part of the dipper damping system. It is the steel arm that connects the door swing linkage to the rotary damper mechanism.