Locknut, precision locknut, special housing unit manufacturer, supplier, factory, exporter--China Ningbo SUP bearing Co.,Ltd. established and developed on the basis of the Dalian SUPbearing factory from 2000. The company is specialized in designing and manufacturing various kinds of large-size bearings, locknut, precision locknut, special housing unit, locknuts, precision locknuts, special housing units, slewing rings, ceramic bearings, automotive bearings, low noise deep groove ball bearing and non-standard bearing for motors, oil drillings, automobiles, water pump, power tools, large-size agricultural machines and mining machines etc. SUPbearing strictly implements the management of ISO9002 quality control system. We can take you higher quality products, locknut, precision locknut, special housing unit, locknuts, precision locknuts, special housing units, competitive price and good service up to date.