BEARINGDEX
Tapered roller

30208 bearing

40 mm bore, 80 mm outside diameter, 19.75 mm width (1.5748 × 3.1496 × 0.7776 in).

Dimensions

mminch
Bore d401.5748
Outside diameter D803.1496
Width T19.750.7776

Quick numbers

Pitch diameter dm60.0 mm
Section height (D − d)/220.0 mm
n·dm at 1,800 rpm108,000
n·dm at 3,600 rpm216,000

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

What the number means

3Tapered roller
02Dimension series 02: width 0, diameter 2 (light)
08Bore code 08 × 5 = 40 mm