NSK’s off-highway bearing range is designed to provide improved service life in the arduous conditions including dust, mud, high- loads and extreme temperatures.
Equipped with a greater number of larger rollers for superior high-load ratings and longer life, NSK’s HR series of tapered roller bearings are capable of handling combined heavy radial and axial loads, when used in pairs. They are designed for use on the wheels, differential and final drives of off-highway trucks; the transmission and speed reducers on crawler-dozers; the transmission and front axles of wheel loaders and rotational motors on hydraulic excavators.
Also providing improved performance benefits as a result of integrating additional rollers in their design is NSK’s EW / EM series of cylindrical roller bearings. Designed to optimize the differentials of off-road trucks, the transmissions and torque converters of crawler dozers and the transmissions of wheel loaders, the EW / EM series CRB are capable of carrying particularly large radial loads, and are also suitable for high-speed applications. Available with steel and brass cages, they offer high-load ratings for standard size bearings, in addition to excellent and longer operating life - approximately twice that of conventional CRB.
Complimenting the EW / EM series of CRB in the transmissions of crawler dozers is NSK’s latest specification spherical roller bearings: the NSKHPS series. The HPS™ range of bearings offers new levels of performance with up to twice the operating life compared to conventional bearings of the same size. They also offer a maximum limiting speed that has been improved by up to 20%. These increases provides users with significant benefits by reducing maintenance costs, energy costs, and enabling downscaling of product designs.