Spot Supplies IKO HK5025 Needle Roller Bearing HK5012 HK5016 HK5018 HK5020

Descriptions：

Needle roller bearing is a bearing unit composed of machined outer ring & inner ring,cage and needle roller assembly featuring small section height,big load capacity & rigidity,compact structure and small size,high rotating accuracy with the structure of disposed inner ring. Needle roller bearings have large bearing capacity and are suitable for mounting support structures with limited dimensions. The surface of the journal is hardened as the rolling surface, and the bearing is pressed into the seat hole without axial positioning. Needle roller bearing is characterized by multiple structures,broad adaptability and easy installation.

A needle roller bearing is a special type of roller bearing which uses long, thin cylindrical rollers resembling needles. Ordinary roller bearings' rollers are only slightly longer than their diameter, but needle bearings typically have rollers that are at least four times longer than their diameter.Suitable across a range of operating conditions, these bearings feature rings made of carefully selected vacuum-degassed bearing steel or carburized steel and precision-ground, heat-treated rollers.
Compared to ball bearings and ordinary roller bearings, needle bearings have a greater surface area in contact with the races, so they can support a greater load. They are also thinner, so they require less clearance between the axle and the surrounding structure.

Main applications of needle roller bearing:

It is used in various mechanical equipment such as machine tools, metallurgical machinery, textile machinery and printing machinery, and can make the mechanical system design very compact and dexterous.