4662107 BRG ROL For HITACHI ZX70-5A 4TNV98

TRoller bearing is a mechanical equipment component that relies on the rolling contact between the main components to support the rotating parts, and is widely used in modern machinery. Roller bearings have the advantages of small starting torque, high rotation accuracy, easy selection and so on, and can withstand different radial and axial forces.Roller bearings according to the structure and performance characteristics can be divided into the following categories: tapered roller bearings, cross roller bearings, cylindrical roller bearings, ‌The main types of roller bearings include: self-aligning roller bearing ‌, thrust self-aligning roller bearing ‌, tapered roller bearing ‌, tapered roller bearing, crossed roller bearing ‌, cylindrical roller bearing.

The role of the roller bearing includes that the roller bearing can support and fix the shaft, reduce the friction coefficient during the movement, and ensure the rotation accuracy. It also reduces direct metal-to-metal contact through rolling contact, reducing friction and heating, and reducing energy consumption. Roller bearing structure design is compact, can improve the rotation accuracy, suitable for high-precision equipment. Bearings are designed and manufactured to protect the rotating support part, prevent damage due to force, and extend the service life of the machine.