About ZZ Company
ZZ Bearing (Shanghai) Co., Ltd. was established in 1998, located in China bearing production base – Shanghai, registered trademark ZZ, is an enterprise specializing in the design, development, manufacture and sales of precision slewing bearings (slewing rings) and precision slewing drives.
As a dedicated manufacturer of slewing rings and slewing drives, ZZ Bearings combines engineering excellence with rigorous quality control to deliver solutions that perform reliably under the most demanding conditions. Our production facility is equipped with advanced CNC machining centers, induction hardening systems, and precision testing equipment – all managed by experienced technicians who understand the critical tolerances required for wind turbines, solar trackers, cranes, aerial platforms, and industrial automation.
Why global customers choose ZZ:
Certified quality – ISO 9001:2015, ISO 14001, and CE-marked products; full material traceability from certified mills.
Custom engineering – We design and manufacture according to your drawings or application needs (ODM/OEM) with support for special tooth forms, sealing arrangements, and mounting dimensions.
Strict process control – 100% inspection of gear hardness, dimensional accuracy (up to P5/P6 level), and running clearance; each unit undergoes load testing before shipment.
Dedicated after-sales – English-fluent technical support, remote troubleshooting, and fast spare parts supply via air or sea.
Whether you need a standard three-row roller slewing ring or a complete precision drive with integrated motor and brake, ZZ Bearings works as your long-term manufacturing partner – not just a supplier. Let our quality speak for itself.
