Inch series tapered roller bearings =ABMA 19=
Table 4-10(4) Bearing width and overall width
Figure Unit : m
Applied bearing type Nominal bore diameter
d , mm(1/25.4)		 Nominal outside
diameter
D , mm(1/25.4) 		Deviation of the actual bearing width and overall width of cones/cups Ts, Ws
class 4 class 2 class 3 class 0 , 00
over
up to
over
up to
 upper lower upper lower upper lower upper lower
Single-row
-
101.6( 4.0)
266.7(10.5)		 101.6( 4.0)
266.7(10.5)
304.8(12.0)
-

-		 -

-
+203
+356
+356		 0
-254
-254
+203
+203
+203		 0
0
0
+203
+203
+203		 -203
-203
-203
+203
+203
+203		 -203
-203
-2031)
304.8(12.0)
304.8(12.0)
609.6(24.0)		 609.6(24.0)
609.6(24.0)
 
-
508.0(20.0)
-		 508.0(20.0)
-
-
-
-
+381		 -
-
-381
+381
+381
-		 -381
-381
-
+203
+381
+381		 -203
-381
-381
-
-
-		 -
-
-
Double-row
-
101.6( 4.0)
267.7(10.5)		 101.6( 4.0)
267.7(10.5)
304.8(12.0)
-
-
-		 -
-
-
+406
+711
+711		 0
-508
-508
+406
+406
+406		 0
-203
-203
+406
+406
+406		 -406
-406
-406
+406
+406
+406		 -406
-406
-4061)
304.8(12.0)
304.8(12.0)
609.6(24.0)		 609.6(24.0)
609.6(24.0)
 
-
508.0(20.0)
-		 508.0(20.0)
-
-
-
-
+762		 -
-
-762
+762
+762
-		 -762
-762
-
+406
+762
+762		 -406
-762
-762
-
-
-		 -
-
-
Double-row
(TNA type)
-
127.0( 5.0)		 127.0( 5.0)
-
-		 -
-
-
-		 -
-
+254
+762		 0
0
+254
+762		 0
0
-
-		 -
-
Four-row
Total dimensional range
- -
+1524 -1524
+1524 -1524
+1524 -1524
+1524 -1524
[Note] 1)These shall be applied to bearings of class 0