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Structure of bearing
Bearing Material
Accuracy
Lubrication
Vibration and noise
Internal clearance
Points of attention for using
Installation
Inspection and Test
 
¡¡Technology information >>Accuracy >>ABEC-3
TOLERANCE CLASS ABEC-3
INNER RING Tolerance in um.
d
^dmp
Vdp2)
Vdmp
Kia
^Bs
VBs
Diameter Series
mm
9
0,1
2,3,4
over
incl.
high
low
max
max.
max.
high
low
max.
1)0.6
2.5
0
-7
9
7
5
5
5
0
-40
12
2.5
10
0
-7
9
7
5
5
6
0
-120
15
10
18
0
-7
9
7
5
5
7
0
-120
20
18
30
0
-8
10
8
6
6
8
0
-120
20
30
50
0
-10
13
10
8
8
10
0
-120
20
50
80
0
-12
15
15
9
9
10
0
-150
25
1)0.6 is included.
2)No values for diameter series 7,8
 
OUTER RING Tolerance in um.
D
^Dmp
VDp2)4)
VDmp4)
Kea
^Cs
VCs
Open
Bearings
Capped Bearings3)
mm
Diameter Series
9
0,1
2,3,4
0,1,2,3,4
over
incl.
high
low
max
max.
max.
high
low
max.
1)2.5
6
0
-7
9
7
5
9
5
8
Identical to^Bs and VBsof inner ring ofsame bearing
6
18
0
-7
9
7
5
9
5
8
18
30
0
-8
10
8
6
10
6
9
30
50
0
-9
11
9
7
13
7
10
50
80
0
-11
14
11
8
16
8
13
80
120
0
-13
16
16
10
20
10
18
120
150
0
-15
19
19
11
25
11
20
1) 2.5 is included.
2) No values for diameter series 7,8
3) No values for diameter series 9.
4) Fit for before assembling and after disestablish of snap rings.