Slewing ring gear and swing bearings are widely used in construction machineries such as Tower Cranes, Truck Mounted Crane, Crawler Crane, Mobile Cranes, Truck telescopic crane ,other types of cranes, piling machines, and truck-mounted
concrete pumps, etc. With the rapid development of Chinese economy, national key projects and urban infrastructure construction projects are being started one after another, leading to strong demand for various kinds of construction machinery.

Our typical Single row four point ball contact slewing ring bearing and Double axial ball contact slewing bearing with high stiffness and high reliability are used this applications.
he tunneling drilling equipment requiring high stiffness with high capacity. Also the lifetime & reliability being a major issue of those applications.

Our Triple row roller slewing ring gear and swing bearing is able to carry different loads at the same time, and their load carrying capacity is larger than that of a similar configuration of ball bearing. The roller elements are
separated by spacers which can be individual or they can be segmented. Some of the heavy bearings incorporate the use of continuous cage, which are usually made from bronze. We offer the best reliability and precision, proven by extensive in-house testing, for the applications.Our slewing ring bearing is best solution for tunneling boring machine.

Machine in Forest requires strong components, wanda optimized design and the capacity of our slewing ring bearing to work in such tough environment. Single row four point ball contact slewing ring bearing is an example of highest
quality standard with high stiffness and low friction. It is perfect solution for Feller buncher working condition.

Our bearing finishing by grinding brings a valid pre-loading which is important for the service life time of the slewing bearing and the comfort of the forest machinery’s drivers.

The slewing ring gear and swing bearings from Tensun accept the shocks and the high rotating speed of the de-barkers as well as the temperature of the coldest forests.
Slewing ring bearings are widely used in construction machineries such as Crawler cranes, excavators. Our typical Single-row four point contact ball slewing ring bearing is mainly for Excavator application.

We also provide spare parts of slewing ring gear and swing bearing for excavator maintenance replacement. The slewing ring bearing for spare parts have been delivered to over 30 countries.

1. Our manufacturing standard is according to machinery standard JB/T2300-2011, we also has been found the efficient Quality Management Systems(QMS) of ISO 9001:2015 and GB/T19001-2008.

2. We devote ourselves to the R &D of customized slewing bearing with high precision,special purpose and requirements.

3. With abundant raw materials and high production efficiency, the company can supply products to customers as quickly as possible and shorten the time for customers to wait for products.

4. Our internal quality control includes first inspection, mutual inspection, in-process quality control and sampling inspection to ensure product quality. The company has complete testing equipment and advanced testing method.

5. Strong after-sales service team, timely solve customer problems, to provide customers with a variety of services.