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Koyo RNA4909 — catalogue photograph of the needle roller bearing family

Koyo RNA4909 needle roller bearing inner ring

Koyo RNA4909 needle roller bearing inner ring: roller bore diameter Fw 52 mm, outside diameter D 68 mm, width 22 mm; cross-references: IKO RNA4909, INA RNA4909.

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 RNA4909 — catalogue photograph of the needle roller bearing familyKoyo RNA4909 — catalogue drawing of the needle roller bearing familyKoyo RNA4909 — catalogue drawing of the needle roller bearing family

Specifications

Roller bore diameter Fw52 mm
Outside diameter D68 mm
Width22 mm
Basic dynamic load rating Cr46.8 kN
Shaft diameter52 mm
Basic static load rating C0r74.8 kN
Limiting speed, grease lubrication5400 min-1
Limiting speed, oil lubrication8400 min-1
Mass0.201 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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