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Koyo RNA4908 — catalogue photograph of the needle roller bearing family

Koyo RNA4908 heavy-duty needle roller bearing

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

Heavy-duty needle roller bearings · 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
Koyo RNA4908: roller bore diameter Fw 48 mm, outside diameter D 62 mm, width C 22 mm, drawn to scaleFw 48 mmD 62 mmC 22 mm
Drawing: BearingLookup, to the printed roller bore diameter Fw, outside diameter D and width C cited in the specifications below; internal detail is illustrative.

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: Verified printed in Koyo’s own catalogue

Cross-references

PartManufacturerRelationshipEvidence
IKODimensional interchangeSingle source stated by Koyo; not corroborated
INADimensional interchangeSingle source stated 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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