ball and roller bearings - NTN Bearing Corporation of America

TOLERANCE
TABLES
264
Tolerance limits for:
Inch series tapered roller bearings.
Table 14
CONE BORE TOLERANCES
Cone Bore Class 4 Class 3 Class 0 Class 00
.0001 .001 .0001 .001 .0001 .001 .0001 .001
inch mm inch mm inch mm inch mm inch mm
Over Incl. Over Incl. High Low High Low High Low High Low High Low High Low High Low High Low
— 3 —-- 76.2 +5 -0 +13 -0 +5 -0 +13 -0 5 -0 +13 -0 +3 -0 +8 0
3 12 76.2 304.8 +10 -0 +25 -0 +5 -0 +13 -0 5 -0 +13 -0 +3 -0 +8 0
12 24 304.8 609.6 +20 -0 +51 -0 +10 -0 +25 -0 – – – – – – – –
24 36 609.6 914.4 +30 -0 +76 -0 +15 -0 +38 -0 – – – – – – – –
36 48 914.4 1219.2 +40 -0 +102 -0 +20 -0 +51 -0 – – – – – – – –
48 — 1219.2 —-- +50 -0 +127 -0 +30 -0 +76 -0 – – – – – – – –
Table 15
CUP O.D. TOLERANCES
Cup O.D. Class 4 Class 3 Class 0 Class 00
.0001 .001 .0001 .001 .0001 .001 .0001 .001
inch mm inch mm inch mm inch mm inch mm
Over Incl. Over Incl. High Low High Low High Low High Low High Low High Low High Low High Low
— 12 —-- 304.8 +10 -0 +25 -0 +5 -0 +13 -0 +5 -0 +13 -0 +3 -0 +8 -0
12 24 304.8 609.6 +20 -0 +51 -0 +10 -0 +25 -0 – – – – – – – –
24 36 609.6 914.4 +30 -0 +76 -0 +15 -0 +38 -0 – – – – – – – –
36 48 914.4 1219.2 +40 -0 +102 -0 +20 -0 +51 -0 – – – – – – – –
48 — 1219.2 —-- +50 -0 +127 -0 +30 -0 +76 -0 – – – – – – – –
Table 16
OVERALL BEARING WIDTH TOLERANCES
Cone Bore Cup O.D. Class 4 Class 3 Class 0, 00
.0001 .001 .0001 .001 .0001 .001 .0001 .001
inch mm inch mm inch mm inch mm inch mm
Over Incl. Over Incl. High Low High Low High Low High Low High Low High Low High Low High Low
— 4 —-- 101.6 – – – – +80 -0 +203 -0 +80 -80 +203 -203 +80 -80 +203 -203
4 12 101.6 304.8 – – – – +140 -1 +356 -254 +80 -80 +203 -203 +80 -80 +203 -203
12 24 304.8 609.6 – -20 – -508 +150 -150 +381 -381 +80 -80 +203 -203 – – – –
12 24 304.8 609.6 +20 – +508 – +150 -150 +381 -381 +150 -150 +381 -381 – – – –
24 — 609.6 —-- – – – – +150 -150 +381 -381 +150 -150 +381 -381 – – – –
Table 17
ASSEMBLED BEARING MAXIMUM RADIAL RUNOUT
Cup O.D. Class 4 Class 3 Class 0 Class 00
inch mm .0001 .001 .0001 .001 .0001 .001 .0001 .001
Over Incl. Over Incl. inch mm inch mm inch mm inch mm
— 12 —-- 304.8 20 51 3 8 1.5 4 .75 2
12 24 304.8 609.6 20 51 7 18 – – – –
24 36 609.6 914.4 30 76 20 51 – – – –
36 — 914.4 —-- 30 76 30 76 – – – –