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Bearings-General bearings-Needle roller bearings

A needle bearing has a large surface area in contact with the outer surfaces compared to ball bearings, and is much compact as there is less added clearance. The typical structure consists of an inner race or sometimes merely a shaft, a needle cage which orients and contains the needle rollers, the needle rollers themselves, and an outer race. 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 bearings are heavily used in engine components such as rocker arm pivots, pumps, compressors, and transmissions.

Radial needle roller and cage assemblies
KZK series and KBK series
Applied to pins of connecting rods of automobiles.
K...(TN)  KNL series
KK series
KS series
KKS series
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Thrust needle roller / cylindrical roller and cage assemblies
AXK
AXW
K811 / K812 / K874 / K893 / K894
AS / GS811 washers
WS811 / LS washers
ZS washers
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Heavy duty needle roller bearings
NK (TN) / RNA49 / RNA69 / NKS / RNA48
NKI / NKIS / NA49 / NA69 / NA48
NA49...RS / NA49...2RS
RNA49...RS  / RNA49...2RS
RNAO / NAO
RPNA / PNA
RNAV / NAV​
Picture
Picture
Drawn cup needle roller bearings
​HK...TN, HK / BK / TA
Inch series SCE / BA / BHA / M
HK...RS / HK...2RS / BK...RS (Sealed types)
F / FH / FY / MF / MFH / MFY (Full complement)
HF / HFL (Drawn cup roller clutches)
Picture
Picture
Inner Rings
​IR / LR
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Track roller bearings (Cam followers)
​RSTO...X / RSTO / STO...X / STO
RNA22...2RS / NA22...2RS / NA22...2RSX
NUTR / NUTR...X
NATR / NARV / NATR...PP / NARV...PP
KR / KR...PP / KRV / KRV...PP
KRE / KRE...PP / KRVE / KRVE...PP
NUKR / NUKRE
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  • Home
  • About
  • Bearings
    • General bearings >
      • Deep groove ball bearings >
        • 6xxx & 16xxx
        • R and Inch 16xx
        • Miniature bearings
        • Vibration
        • Stainless steel bearings / bearing units
        • Ceramic ball bearings
      • Taper roller bearings >
        • Metric
        • Inch-size
      • Cylindrical roller bearings
      • Needle roller bearings
      • Angular contact ball bearings
      • Double row angular contact ball bearings
      • Self-aligning ball bearings
      • Self-aligning spherical roller bearings
      • Thrust ball bearings >
        • 5xxxx
        • F/FM
    • Bearing Units >
      • Inserts >
        • UC200 UC300 UCX00
        • HC200
        • UK200 UK300 UKX00
        • SA200 SB200
        • SER200 SC200
      • UCP200 UCP300 UCPX00 >
        • UCPA200
        • UCPH200
      • UCF200 UCF300 UCFX00 >
        • UCFS300
      • UCFL200 UCFL300 UCFLX00 >
        • UCFT200
      • UCFC200 UCFCX00
      • UCFA200
      • UCFB200
      • UCC200 UCC300 UCCX00
      • UCECH200
      • UCT200 UCT300 UCTX00
      • SBPP200 SBPF200 SBPFL200 >
        • SBPFT200
    • Accessories & parts >
      • Adapter & withdraw sleeves >
        • Adapters
        • Withdraw sleeves
      • Steel balls
      • Cylindrical and needle rollers
    • Auto bearings >
      • Water pump bearings
      • Clutch release bearings
      • Wheel hub bearings
      • Air conditioner motor bearings
      • Connect rod needle bearings
    • Agricultural bearings and bearing units
    • Sliding and Linear >
      • Spherical Plains
      • Rod ends
      • Linear motion
  • Transmission
    • A/B Series
    • Motorcycle
    • Heavy duty
    • Double pitch
    • Straight side plates
    • Conveyor attachment
    • Leaf chains LH/BL
    • Leaf chains LL/AL
  • Auto Parts
  • Textile machine parts
  • Contact
  • bulletin