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Koyo NK21/20 — catalogue photograph of the needle roller bearing family

Koyo NK21/20 needle roller bearing inner ring

Koyo NK21/20 needle roller bearing inner ring: roller bore diameter Fw 21 mm, outside diameter D 29 mm, width 20 mm.

Needle roller bearing inner rings · All Koyo part numbers

Figure © Koyo, clipped unaltered from Koyo Ball & Roller Bearings catalog B2001E-6 — Standard Bearings section (B2001E-6b). It illustrates the product family printed there, which may include other sizes. Removed on request.

Koyo NK21/20 — catalogue photograph of the needle roller bearing familyKoyo NK21/20 — catalogue drawing of the needle roller bearing familyKoyo NK21/20 — catalogue drawing of the needle roller bearing family

Specifications

Roller bore diameter Fw21 mm
Outside diameter D29 mm
Width20 mm
Basic dynamic load rating Cr18.1 kN
Shaft diameter21 mm
Basic static load rating C0r26.9 kN
Limiting speed, grease lubrication14000 min-1
Limiting speed, oil lubrication21000 min-1
Mass0.040 kg
Product typeHeavy-duty needle roller bearings without inner rings, metric series

All specifications: Verifiedprinted in Koyo’s own catalogue

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