Slewing Ring Excavator

Regular maintenance goes a long way toward preventing premature failure, but even the most faithfully maintained bearings will eventually show signs of wear. To extend their life, look for these common signs and take corrective action as indicated.

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Forest Industry Usage Double Row Ball Slewing Bearing

Forest industry is a traditional business and its slewing bearing is a must part for logging machine.

Regular maintenance goes a long way toward preventing premature failure, but even the most faithfully maintained bearings will eventually show signs of wear. To extend their life, look for these common signs and take corrective action as indicated.

Play or clearance in the bearing often signifies that a raceway is worn. A new bearing is assembled with a specific amount of clearance to compensate for slight out-of-flatness in a mounting structure. Wear can increase this clearance dramatically. In machinery with a boom, free play magnified over the length of the boom allows it to rock back and forth under load, reducing the 'stiffness' in the extended boom. Check bearing clearance with a dial indicator that measures how much the structure tilts when the boom is loaded.

Grinding, popping, or clicking noises from the bearing typically mean there could be inadequate lubrication and/or excessive wear in the raceway, or loose bolts. As noted previously, greasing the bearing and purging lubricant is a good way to check for metal particle.

 

 


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