|Place of Origin:||China|
|Brand Name:||TOB Needle Roller Bearings|
|Minimum Order Quantity:||negotiated|
|Packaging Details:||Cartons or Pallets|
|Material:||Bearing Steel||K Type:||Radial Needle And Cage Assemblies|
|NA,NKI,RNA,NK Type:||Outer With Double Raised Edge Single Row||NA,RNA Type:||Outer With Double Raised Edge Double Row|
|HK,BK Type:||Stamping Outer Needle Roller Bearing||Application:||Used In Automobile Components|
K , NA , NKI , RNA , NK , HK , BK Type Of Needle Roller Bearings
A needle roller bearing is a bearing which uses small cylindrical rollers. They are used to reduce friction of a rotating surface.
Needle bearings have a large surface area that is in contact with the bearing outer surfaces compared to ball bearings. Additionally there is less add clearance (difference between the diameter of the shaft and the diameter of the bearing) so they are much more compact. The typical structure consists of a needle cage which orients and contains the needle rollers, the needle rollers themselves, and an outer race (sometimes the housing itself).
Radial needle bearings are cylindrical and use rollers parallel to the axis of the shaft. Thrust needle bearings are flat and use a radial pattern of needles.
Needle roller bearings have a high load carrying capacity in addition to their low cross-section and stiffness. They are especially suitable for bearing arrangements where radial space is limited. Because needle roller bearings only carry pure radial load and cannot limit the axial displacement of shaft relative to the housing. It is important to ensure that inner ring axis and outer ring axis must be aligned during mounting the bearings.
Needle bearings are heavily used in automobile components such as rocker arm pivots, pumps, compressors, and transmissions. The drive shaft of a rear-wheel drive vehicle typically has at least eight needle bearings (four in each U joint) and often more if it is particularly long, or operates on steep slopes.
|HK||Drawn Cup needle Roller Bearing with Open Ends|
|HK……RS||Drawn Cup needle Roller Bearing with Open EndsSealed on One Side|
|HK……2RS||Drawn Cup needle Roller Bearing with Open Ends, Sealed on Both Sides|
|BK||Drawn Cup needle Roller Bearing with Close End|
|BK……RS||Drawn Cup needle Roller Bearing with Close End, Sealed on One Side|
|FFY||Drawn Cup Full Complement Needle Roller Bearing with Open End|
|MF……MFY||Drawn Cup Full Complement Needle Roller Bearing with Open End