The features and classification drawn cup inch needle roller bearings

The drawn cup inch needle roller bearings is a needle roller bearing with thin middle pressure forming outer ring. Its main characteristic is the section height is very low and the bearing capacity is high. It is mainly used for bearings with compact structure, low price and the inner hole of bearing box cannot be used as raceway of needle roller cage assembly. Bearings and bearing boxes shall be installed in an interference-fit manner. If the box shoulder, stop ring and other axial positioning functions can be eliminated, then the bearing box inner hole can be very simple and economical.

The drawn cup inch needle roller bearings mounted on the shaft end is provided with double-side open type (1) and single-side closed type (2). The base face of the closed stamping outer ring can bear little axial guiding force.

drawn cup inch needle roller bearings with stamping outer ring usually does not have inner ring. The inner rings listed in the table may be used where the journal cannot be hardened or ground.

The hardened steel plate outer ring of the rammed outer ring needle roller bearing is inseparable from the needle roller cage assembly. The free space for storing lubricants can extend the interval between supplementary lubricants. Bearings are generally designed in a single row. Except for bearings of wider specifications such as 1522, 1622, 2030, 2538 and 3038, which are fitted with two needle roller cage assemblies. Bearing outer ring has lubricating oil holes. All single-row medium-pressure outer ring needle roller bearings with shaft diameter greater than or equal to 7mm May be fitted with outer ring with lubricating oil hole (code suffix AS1), as required by the user.

The drawn cup inch needle roller bearings with oil seal pressing outer ring. Where the oil seal cannot be installed due to space constraints, needle roller bearings with oil seal stamping outer ring (3 to 5) can be provided with open end or closed end. This type of bearing seal equipment of polyurethane or synthetic rubber friction, which have good rust resistance of lithium base grease filling, applicable operating temperature - 20 to + 100 ℃.The inner ring of the bearing with oil seal is 1mm wider than the outer ring, which can ensure that the oil seal works well and the bearing is free from contamination when the bearing shaft has a small displacement from the bearing box. Bearing inner ring also has lubrication holes, which can be supplemented by outer ring or inner ring according to the needs of bearing configuration.

The drawn cup inch needle roller bearings classification:Needle roller bearing is divided into:1. Centripetal needle roller and cage assembly 2MA, NKT type needle roller bearing3. RNA, ME type needle roller bearing without inner ring 4HK type medium pressure needle roller bearing with outer ring5.BK type medium pressure outer ring needle roller bearingThe outer ring drawn cup inch needle roller bearings mounted on the shaft end is provided with double-side open type (1) and single-side closed type (2). The base face of the closed stamping outer ring can bear little axial guiding force.The outer ring needle roller bearing mounted on the shaft end is provided with double-side open type (1) and single-side closed type (2). Closure: the base face of the middle pressure outer ring can withstand small axial guiding force.

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