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Needle bearing

- Jul 17, 2018 -

Needle bearing is a roller bearing with cylindrical roller, and its diameter is long and thin. This roller is called a needle roller. In spite of the smaller section, the bearing has a high load bearing capacity. The needle roller bearing is equipped with a thin and long roller (the roller diameter D < 5mm, L/D > 2.5, L as the roller length), so the radial structure is compact and the inner diameter and load capacity are the same as other types of bearings, which are especially suitable for radial safety. A supporting structure with limited size.

According to the different use situation, the bearing or needle roller and the cage assembly can be selected. At this time, the surface of the shaft neck and the outer surface of the shell are directly used as the inner and outer rolling surface of the bearing, so as to ensure the same load and running performance as the bearing ring bearing, the hardness of the surface of the axle or the outer shell hole raceway, and the machining accuracy. And the surface quality should be similar to the raceway of the bearing ring. This kind of bearing can only bear radial load.


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