Zemek has supported Rope Shovel operators with stocks of critical spares for decades.  Today the Zemek Mackay warehouse holds the latest generation spares for Komatsu P&H 4100 and CAT Bucyrus 7495 series shovels.  These parts have been continuously upgraded in collaboration with operators and provide the best possible service.  Zemek Mackay holds- ·         Latch bars ·      &nb...

Challenge A fleet of Hitachi EX5600 excavators operated at a Queensland coal mine were suffering lost time due to high rates of Contamination Sensor Alarms.  These alarms necessitated stopping the machine while maintenance checked and cleaned the sensors before the machine could start again. 
Further, the elevated levels of iron in the machine's hydraulic system were causing reduced component life.  Solution After hearing of success with similar Hitachi machines...

Socket Repairs  Visible indicators
Wear in bore and surrounding area Mushrooming in bushes
Deformation and loss of material in rope groove Risk Accelerated wear in mating components Accelerated rope wear Catastrophic failure   ...

P&H 4100XPC Queensland Coal  A Queensland Coal Mine operates electric rope shovels, these machines suffered frequent production losses to dipper trip mechanism failure.  This had the effect of shutting down the shovels themselves and standing down of the haul truck fleets.  Revised and optimised system components, along with improved alignment overcame the problem.  Challenge
A Queensland Coal mine operated Komatsu P&H 4100XPB/C rope shovels in overburden cle...

    Here are some examples of hydraulic failure clean-up in mining trucks, excavators, dozers, loaders. 
Mag-Shield removes iron from contaminated systems, allows fast repairs with no follow-on failures.   1. Mag Shield in CAT 793D after normal operation                               2. CAT 777F after component failure   Find out more about Mag-Shield here or contact s...