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Koyo RNA4908 — catalogue photograph of the needle roller bearing family

Koyo RNA4908 needle roller bearing inner ring

Koyo RNA4908 needle roller bearing inner ring: roller bore diameter Fw 48 mm, outside diameter D 62 mm, width 22 mm; cross-references: IKO RNA4908, INA RNA4908.

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 RNA4908 — catalogue photograph of the needle roller bearing familyKoyo RNA4908 — catalogue drawing of the needle roller bearing familyKoyo RNA4908 — catalogue drawing of the needle roller bearing family

Specifications

Roller bore diameter Fw48 mm
Outside diameter D62 mm
Width22 mm
Basic dynamic load rating Cr44.2 kN
Shaft diameter48 mm
Basic static load rating C0r67.8 kN
Limiting speed, grease lubrication5900 min-1
Limiting speed, oil lubrication9100 min-1
Mass0.154 kg
Product typeHeavy-duty needle roller bearings without inner rings, metric series

All specifications: Verifiedprinted in Koyo’s own catalogue

Cross-references

PartManufacturerRelationshipEvidence
IKODimensional interchangeSingle sourcestated by Koyo; not corroborated
INADimensional interchangeSingle sourcestated by Koyo; not corroborated

Koyo: 'Dimensional interchangeability only. This does not imply interchangeable in all respects.' (Metric NRB Interchange Guide p18)

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