Angular contact ball bearing is developed to be used in the travel device(driving motor), The travel device designed for crawler machines such as excavators, drilling machines, cranes etc. This bearing is characterized by its capacity of high load, moment, low rotationg speed and oil lubrication.
Individual bearings of this type are capable of taking radial and also axial loads in one direction. Four contact angles of 15°~40° are available. The larger the contact angle, the higher the axial load capacity. For high speed operation, however, the smaller contact angles are preferred.