BEARINGDEX
Ball, inch R series

R12 bearing

3/4 inch bore, 1-5/8 inch outside diameter, 7/16 inch width (19.05 × 41.275 × 11.112 mm).

Dimensions

mminch
Bore d19.050.7500 (3/4)
Outside diameter D41.2751.6250 (1-5/8)
Width B11.1120.4375 (7/16)

Quick numbers

Pitch diameter dm30.2 mm
Section height (D − d)/211.1 mm
n·dm at 1,800 rpm54,293
n·dm at 3,600 rpm108,585

Compare against the maker's limiting speed. Speed calculator · L10 life

What the number means

RInch-dimension radial ball bearing
12Bore in sixteenths of an inch: 12/16 = 3/4 in