Drilling equipment used in petroleum industry includes mud pump, winch, top drive, crown block, etc. Working conditions: heavy load, heavy sediment, strong corrosivity, large impact vibration.

WZZZ Rolling Mill Bearings the deep groove ball bearing, self-aligning roller bearing, cylindrical roller bearing, tapered roller bearing and thrust cylindrical roller bearing are provided. Through strengthening the design and manufacturing, the load capacity is increased, the corrosion resistance and impact resistance performance are improved, and the service life of the bearing is extended.