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A Design Study in Steel - Spokane Industries Steel Snubber Arm

Snubber Arm -- Application

Shovel Dipper

The dipper/bucket is the digging and loading tool on the mining shovel. 

Dippers can be as large as 12 x 12 x 15 feet with nominal volume and weight payload capacities up to 80 cubic yards and 100 tons. 

The dipper has a bottom swing door which is latch closed during digging and drops open to dump the payload into the truck bed.    

The dipper door itself has a weight of 25,000 pounds and a full load on the dipper door is up to 110 tons. The door commonly has damping devices to eliminate unrestrained swinging and to prevent impact damage from "banging" and "slamming."


Copyright 2011  by the Steel Founders' Society of America   All rights reserved. 
Address comments to: blairr@sfsa.org
Last Modified:August, 2011 by STG

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In cooperation with
Spokane Industries - Steel Castings Division