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  1. icestationzebra

    mining shovel news

    For you guys interested in mining shovels: Komatsu relocated hybrid shovel 2650CX #1 to Colorado and will be building #2 in 2020. Will also be assembling the first 4800XPC in Canada soon. (135 st, 3 pass load 400t trucks)...
  2. icestationzebra

    Left vs. Right hand cab

    I have been wondering if there is any specific reason why early machines had cabs on either side, but eventually excavators,cranes and draglines have evolved to left hand cabs while other machines like rope shovels have right hand cabs? ISZ
  3. icestationzebra

    AC haul truck braking

    I have a general question about early haul trucks with AC wheel motors. When the motors are being used to retard the truck, is the amount of retard variable or does it come in steps? Siemens talks about eliminating mechanical contactors in the chopper circuit but it's not clear if the they were...
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