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R4 bearing: 6.35 × 15.88 × 4.98 mm

Bearings › R4

An R4 is a deep groove ball bearing, 6.35 mm bore, 15.88 mm outside diameter, 4.98 mm wide.

Bore6.35 mm
Outside diameter (OD)15.88 mm
Width4.98 mm

Sizes from maker catalogues. No sourced load ratings for this one yet, so none are shown.

Open R4 in BenchsmithAdd to order list

What the number means

RInch-size deep groove ball bearing
4Bore 4/16″ = 0.250″

One size up or down

Every bearing 6.35 × 15.88 × 4.98 mm: 6.35 × 15.88 × 4.98 mm bearings. Measured a bearing with no number on it? Type the bore, OD and width into Benchsmith → Find → Bearing.