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'Lift System' Method:
  • A proven safer method. Safety was a prime consideration in the design of the 'Lift System'. The hydraulics and structural design make for a more stable system as compared to other available methods.

  • The 'Lift System' is assembled prior to shovel shutdown. A shovel can be undecked and the carbody removed within 12 hours or less -- reducing shovel downtime by up to 50%.

  • Utilizing four huge hydraulic jacks, the 'Lift System' hoists the 1+ million pound shovel off the carbody in a synchronized movement. Hydraulic power is evenly applied to the four hydraulic jacks from a single control panel.

  • Hoisting the revolving frame above the top of the center pin eliminates the risk of damaging or destroying the center pin or bushing.

  • Boom in the air, stick with dipper intact. If no repairs are scheduled to the boom or it's components, the unique design of the 'Lift System' allows for the shovel to be undecked with the boom in the air, stick with dipper intact - further reducing shovel downtime.

  • After propelling the carbody out from under the shovel, the 'Lift System' lowers the revolving frame to a safe/convenient working height for inspection and repair, allowing for easy access to the bottom of the revolving frame.


The 'Lift System' was designed to undeck the largest of the mining shovels, including but not limited to the P&H 2300, 2800, and 4100 Series. With the ability to lift or hoist 1+ million pounds, undecking shovels in a safe and expedient manner has been the primary focus of HAMM Equipment. Since 1998, the 'Lift System' has been utilized in over 45 shovel undecking projects. This impressive project history reflects the systems' ability and the company's expertise in shovel repair.


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