Needle roller bearing

date:12-04-11, 04:43 PM

Item name:Needle roller bearing

Model:

INA: HK. , BK. , NK. , NKS.., NA.. , RNA.. , NAO.. , RNAO.. , NKI.. , NKIS..and etc.

IKO: NA, RNA, TAF, TR, BR , KT...EG , KTV...EG and etc.

Application: Automobile, Motorcycle, Cycle, Electric tool, Spinning machine, Agriculture machine, Industrial sewing machine, Engineering machinery and etc.

Description: Needle roller bearing has small cross section still bearing the load with a higher capacity, it is particularly applicable to the radial space is limited occasions. Since its very high lubricant capacity, light weight and rigidity, it can be allowed to use in severe situation:high rotational speed,impact load and etc. Needle roller bearings do a well performance in high speed but lower error. It is very extensive use.

Needle rollers equipped with a thin, long (roller diameter D ≤ 5mm, L/D ≥ 2.5mm, L for the roller length) compact radial structure, especially suitable for unrestricted support to a radial mounting dimensions results. Under using occasions , can selection no inner ring of bearing or roll needle and cages component, at this time the bearing journal surfaces and shell holes to go directly on the surface as a bearing surface of the inside and outside of the scroll bar. Such bearings can only accommodate radial loads.

Classification:

Common needle roller bearings can be divided into:

Drawn cup needle roller bearings

The main feature of drawn cup needle roller bearings are very low sectional height and high load capacity. It is mainly used for compact, inexpensive and the housing bore cannot be used as a needle roller and cage assemblies roller bearing arrangements. Bearings and bearing boxes are interference-fit installation. If it can save box axial positioning function such as shoulders, snap ring, then the housing bore can be done very simple and economic.

Metric series: HK, BK, F, FH, FY, MF, MFH, MFY; TA...Z, TLA...Z, TAM, TLAM, YT, YTL.

Entity bushed needle roller bearings

Entity bushed needle roller bearing is composed of one or two rings and needle rollers with a cage. According to the different applications, it can be divided into the bearings with or without the inner ring. Therefore, entity bushed needle roller bearing can meet the light weight, small footprint, passing power requirements. Entity bushed needle roller bearing has a lower volume and higher carrying capacity.

Combined needle roller bearings

Combined needle roller bearings are the combinations of a radial needle roller bearing and thrust bearing units, The bearings compact volume is small and rotation precision is high. They can withstand high radial loads under axial loads at the same time. Combined needle roller bearings are widely used in metallurgical machinery, machine tools, textile machinery and printing machinery. The mechanical systems design is very compact.

Thrust needle roller bearings

Thrust needle roller bearings are composed of thrust cage assemblies with needle rollers or cylindrical rollers or balls and thrust washers. Needle rollers and cylindrical rollers are guided by the thrust retainers.

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