What is a needle roll

Needle roller refers to the rotating body on needle roller bearings, which is mainly used in all kinds of bearings. It is a roller bearing with cylindrical rollers. The rollers are thin and long like needles. Radial structure is compact.

Needle roller bearings are equipped with thin and long rollers (roller length is 3~10 times of diameter, diameter is generally not more than 5mm), so the radial structure is compact, its inner diameter size and load capacity are the same as other types of bearings, and the outer diameter is the smallest, especially suitable for radial installation size limited support results. According to the use of different occasions, can be used without inner ring of the bearing or needle roller and cage components, at this time to suit the bearing surface of the surface of the shaft and the shell hole directly as inner and outer rolling bearing surface, in order to ensure the load capacity and operation performance and you have the same ring bearing, axis or shell hole hardness on the surface of the raceway, machining accuracy and surface quality should be as a bearing ring raceway. This kind of bearing can bear radial load only.

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