Tolerances

TOLERANCES OF INNER RING AND OUTER RING WIDTH (ISO)

d
(mm)
∆ dmp ∆ ds V dp V dmp
P0 P6 P5 P4 P4 P0 P6 P5 P4 P0 P6 P5 P4
diameter series diameter series diameter series diameter series diameter series
0,2,3 7,8,9 0 2,3 7,8,9 0 2,3 7,8,9 0,2,3 7,8,9 0,2,3
over incl. upper lower lower lower lower upper lower max. max. max. max. max. max. max. max.
0.6 (1) 2.5 0 -8 -7 -5 -4 0 -4 10 8 6 9 7 5 5 4 4 3 6 5 3 2
2.5

10

0 -8 -7 -5 -4 0 -4 10 8 6 9 7 5 5 4 4 3 6 5 3 2
10 18 0 -9 -8 -6 -5 0 -4 10 8 6 9 7 5 5 4 4 3 6 5 3 2
18 30 0 -10 -8 -6 -5 0 -5 13 10 8 10 8 6 6 5 5 4 8 6 3 2.5
30 50 0 -12 -10 -8 -6 0 -6 15 12 9 13 10 8 8 6 6 5 9 8 4 3

Remarks 1: The upper value of the bore diameter in this table is not applicable when the distance from the bearing ring face is less than 1.2 times the chamfer dimension Rs max. 

Remarks 2: According to the revision AFBMA Std. 20-1987, the classes ABEC1, ABEC3, ABEC5, ABEC7 are equivalent to ISO 6, ISO 5 and ISO 2

TOLERANCES OF OUTER RING (ISO)

D
(mm)
∆ Dmp ∆ Ds V Dp (2) V dmp
P0 P6 P5 P4 P4 P0 P6 P5 P4 P0 P6 P5 P4
open seal shield open seal shield open open
diameter series diameter series diameter series diameter series diameter series
0,2,3 7,8,9 0 2,3 2,3 7,8,9 0 2,3 2,3 7,8,9 0,2,3 7,8,9 0,2,3
upper incl. upper lower lower lower lower upper lower max. max. max. max. max. max. max. max.
2.5 (1) 6 0 -8 -7 -5 -4 0 -4 10 8 6 10 9 7 5 9 5 4 4 3 6 5 3 2
6 18 0 -8 -7 -5 -4 0 -4 10 8 6 10 9 7 5 9 5 4 4 3 6 5 3 2
18 30 0 -9 -8 -6 -5 0 -5 12 9 7 12 10 8 6 10 6 5 5 4 7 6 3 2.5
30 50 0 -11 -9 -7 -6 0 -6 14 11 8 16 11 9 7 13 7 5 6 5 8 7 4 3
50 80 0 -13 -11 -9 -7 0 -7 16 13 10 20 14 11 8 16 9 7 7 5 10 8 5 3.5

Remarks 1: The lower value of the outside diameter in this table is not applicable when the distance from the bearing ring face is less than 1.2 times the chamfer dimension Rs max 
Remarks 2: According to the revision of AFBMA Std. 20-1987, the classes ABEC1, ABEC3, ABEC5, ABEC7 are equivalent to ISO 6, ISO 5, ISO 4 and ISO 2.

TOLERANCES OF INNER RING AND OUTER RING WIDTH (ABMA)

d
(mm)
∆ dmp ∆ ds V dp V dmp ∆ Bs( ∆ Cs) V Bs K ia S ia S d
ABEC 5P
ABEC 7P
ABEC 5P
ABEC 7P
ABEC 5P
ABEC 7P
ABEC 5P
ABEC 7P
single bearing
ABEC 5P
ABEC 7P
ABEC 5P ABEC 7P ABEC 5P ABEC 7P ABEC 5P ABEC 7P ABEC 5P ABEC 7P
over incl. upper lower upper lower max. max. upper lower max. max. max. max. max. max. max. max.
- 10 0 -5 0 -5 2.5 2.5 0 -25 5 2.5 35 2.5 7 3 7 3
10 18 0 -5 0 -5 2.5 2.5 0 -2.5 5 2.5 3.5 2.5 7 3 7 3
18 30 0 -5 0 -5 2.5 2.5 0 -2.5 5 25 3.5 2.5 7 3 7 3