... used in coal,mine,steel,cement,harbor industrial heavy duty rollers Introduction to our company:Products we ... peUsageUsed in coal,mine,steel,cement,harbor,crusher heavy industryRoller FeatureLow vibration, low noiseReduced power consumption ( ... )Min 30,000 hours standard life timestandard set of testsLoad capacity testsWear testsSealing against dust ... used in the world industrial heavy duty rollers