NA series truck used size 35*55*20mm NA4907.2RS needle roller bearing

Needle roller bearings are roller bearings with rollers with a high aspect ratio. Needle bearings are used in agricultural and construction equipment, automotive transmissions, small gasoline engines, gear pumps, small appliance and tool motors, alternators and aircraft controls.

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    Needle roller bearings are usually grease lubricated, but oil or oil mist lubrication is preferred for heavy duty or high speed applications. Many light duty needle roller bearings never require relubrication, but high loads or high speeds do.

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

    Specification

    TypeNeedle
    Bore Size5 - 35 mm
    Outside Diameter 8 - 55 mm
    Brand NameDKB OR OEM
    Model NumberNA4907
    Precision Rating P0 P2 P4 P5 P6
    Seals Typeopen/rs/2rs/zz
    Number of RowSingle Row
    Materialiron Gcrl15 steel
    Clearance C1/C2/C3/C4/CM
    LubricatingGraphite,carbon,oilless,PTFE
    Certifications ISO 9001:2008
    Application electric motors, automotive components
    Cage steel,brass,ceramic
    Size35*55*20mm

    Feature

    1. High quality raw materials

    With world-class high-quality steel and salt bath quenching and hot combing technology, the wear resistance of the material is greatly improved, and the service life characteristics and high core toughness are improved, and the comprehensive durability is improved.

    2. Separable interchange

    Separate components of the bearings are interchangeable for easy installation, maintenance and disassembly

    3. Advanced heat treatment technology

    After the outer ring is quenched by advanced salt bath, it has sufficient hardness to ensure sufficient running life and satisfactory load carrying capacity.

    4.High precision rolling element

    High-precision rolling body is preferred, which improves the rotation accuracy more effectively, and the accuracy level is P5.

    Parameter

    ShaftBearing DesignationMassBoundary DimensionBasic LoadingLimiting
    DiameterApproxSpeed
    CurrentOriginaldFwDBDynamicStaticOil
    mmcodecodegmmNrpm
    5NA4957513102670235034000
    NA495TN7513102670235034000
    6NA4969615103150300032000
    7NA49712717103600365030000
    8NKI8/168142516124001130021500
    NA49816819114300395028000
    9NKI9/1216.691219126200700021700
    NA49917920114850490026000
    NKI9/1621.991916
    10NKI10/1627.310142216980010500196500
    NA4900452490021101422138000900023700
    NA6900653490038.41014222290001100023700
    12NA4901452490125.11216241390001080020000
    NKI12/203912162420140001840021000
    NA6901653490144.51216242260002160020000
    NKIS125812163016160001700020000
    NA12*32*15V123215
    15NKI15/16381519271688001280019100
    NKI15/2045.715192720123001900019100
    NA4902492490232152028136400900018000
    NA6902653490261.615202823131002090018000
    NKIS159015223520235002400017000
    NA59025215202818
    NAI53212153212
    7480274802153625.4
    16NKIS16162816130001740022000
    NA16*36*24163624
    17NKI17/1641.417212916130001820020000
    NA4903454490332.81722301370001000017000
    NA6903653490368.217223023144002490017000
    NA59035617223018152002170018000
    NA17173720
    20NKI20/1648.520243216108001700016700
    NA4904452490470.220253717210002500017000
    NKIS2011920284220280003550015000
    NA6904625490420253730360005100017000
    NA590420253723