BI617086
Bucyrus International, Inc. 495HD Electric Mining Shovel
SADDLE BLOCK The saddle block, positioned between the boom side girders and pivoting on manganese-bronze bushings about the shipper shaft, acts as a guide for the longitudinal movement of the dipper handle. The free floating design of the handle in the saddle block eliminates handle torsion.
DIPPER HANDLE One end of the 34" (0.86m) diameter handle connects to the dipper. The crowd rope half sheave attaches to the other end. A hydraulic adjustable take-up mechanism at the dipper end is used to remove slack from the crowd/retract rope system. The dipper handle moves in and out within the saddle block. An electrical rate reduction circuit, along with the crowd ropes, absorb digging shock loads encountered when the dipper is crowded into the bank.
Dec. 2007
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Manual No. 10495
