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Koyo RNA4909 — catalogue photograph of the needle roller bearing family

Koyo RNA4909 heavy-duty needle roller bearing

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

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 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
Koyo RNA4909: roller bore diameter Fw 52 mm, outside diameter D 68 mm, width C 22 mm, drawn to scaleFw 52 mmD 68 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 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: 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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