Developed after intensive trials in the Pilbara Iron Ore region, RockMaster is designed for superior performance under the toughest hard rock conditions. The belt features an extra-high strength Natural M Grade’ cover with outstanding abrasion resistance.
Pulley diameters shown apply to belts operating at over 60% of maximum allowable working tension. Diameters of all pulleys must be reduced by 20% where belts are operating at less than 60% of allowable working tension. For belts at less than 30% of allowable tension, the diameters of Type A pulleys can be further reduced by 20%.
Working tensions assume a reasonably well maintained plant, with infrequent controlled starts and moderate impact. For more severe service, ie: poor loading, frequent loaded or DOL starts,short time cycles then reduce the above values by 15%. For extreme service, ie: poorly maintained plant, chemical aggression, bad loading and starting then reduce the above values by 30%.