Tensun Hi-Tech Co., Ltd. is a joint-stock private enterprise and located in Jiangsu Changzhou, a 2-hour drive or 1-hour train from Shanghai. The company specializes in design and manufacturing slewing ring gear and swing bearing and the replacement of OEM’s bearing for more than 10 years. 

We are top ranking professional slewing bearing manufacturer in China, with a strong research group and over 10,000 square meters dedicated manufacturing space that meet a wide range of application needs.

 In the past years, Tensun has always been committed to the development and promotion of national brands and representing the “China made and Chinese Brand”.

Tensun is equipped with the robust quality system; the latest technology and innovation; the advanced CNC production lines, such as CNC raceway lathes, CNC raceway grinding machines, CNC high-speed gear cutting/hobbing machines, milling machines, CNC standard drilling machines and high controlled heat treatment equipment. 

Our equipment is making up to 8.5 m diameter with different structures of slewing ring gear and swing bearing and be able to produce different precision grade of bearings. Our products are mainly supporting in construction Machinery, Lifting & Handling machines, Process industry, Marine, Power generation and precision special bearing, Port Crane, Solar, Water Treatment Equipment, Military, Metallurgy industries and Marine/Offshore Crane with IACS like DNV, LR, ABS approved.

Single row four point contact ball slewing bearing
Double-row eight point contact ball slewing bearing
Crossed cylindrical roller bearings
Triple row roller slewing bearing
Roller/ball combination slewing bearing
Light thin section slewing bearing