Technical>Deep groove ball bearing tolerance
Deep groove ball bearing tolerance

INNER RING

Tolerance in μm.

d
mm 		Δdmp Vdp2) Vdmp Kia ΔBs VBs
Diameter Series
9 0,1 2,3,4
over incl. high low max. max. max. high low max.
1)0.6
2.5
10 		2.5
10
18 		0
0
0 		-8
-8
-8 		10
10
10 		8
8
8 		6
6
6 		6
6
6 		10
10
10 		0
0
0 		-40
-120
-120 		12
15
20
18
30
50 		30
50
80 		0
0
0 		-10
-12
-15 		13
15
19 		10
12
19 		8
9
11 		8
9
11 		13
15
20 		0
0
0 		-120
-120
-150 		20
20
25
80
120 		120
180 		0
0 		-20
-25 		25
31 		25
31 		12
19 		12
19 		25
30 		0
0 		-200
-250 		25
30

Notes:
1) 0.6 is included.       2) No values for diameter series 7,8.

OUTER RING

Tolerance in μm.

D
mm 		ΔDmp VDp2)4) VDmp4) Kea ΔCs VCs
Open
Bearings 		Capped
Bearings2)3)
Diameter Series
9 0,1 2,3,4 2,3,4
over incl. high low max. max. max. high low max.
1)2.5
6
18 		6
18
30 		0
0
0 		-8
-8
-9 		10
10
12 		8
8
9 		6
6
6 		10
10
12 		6
6
7 		15
15
15 		ldentical to
ΔBs and VBs
of inner ring of
same bearing
30
50
80 		50
80
120 		0
0
0 		-11
-13
-15 		14
16
19 		11
13
19 		8
9
11 		16
20
26 		8
10
11 		20
25
35
120
150
180 		150
180
250 		0
0
0 		-18
-25
-30 		23
31
38 		23
31
38 		14
19
23 		30
38
- 		14
19
23 		40
45
50

Notes:
1) 2.5 is included.
2) No values for diameter series 7,8.   3) No values for diameter series 9,0,1.
4) Fit for before assembling and after disestablishing of snap rings.

Inch-dimension equivalent formula 1 inch = 25.4 mm
1 mm = 0.0393700787 inch

DEEP GROOVE BALL BEARING TOLERANCE CLASS ABEC-3 (P6)

INNER RING

Tolerance in μm.

d
mm 		Δdmp Vdp2) Vdmp Kia ΔBs VBs
Diameter Series
9 0,1 2,3,4
over incl. high low max. max. max. high low max.
1)0.6
2.5
10 		2.5
10
18 		0
0
0 		-7
-7
-7 		9
9
9 		7
7
7 		5
5
5 		5
5
5 		5
6
7 		0
0
0 		-40
-120
-120 		12
15
20
18
30
50 		30
50
80 		0
0
0 		-8
-10
-12 		10
13
15 		8
10
15 		6
8
9 		6
8
9 		8
10
10 		0
0
0 		-120
-120
-150 		20
20
25
80
120 		120
180 		0
0 		-15
-18 		19
23 		19
23 		11
14 		11
14 		13
18 		0
0 		-200
-250 		25
30

Notes:
1) 0.6 is included.       2) No values for diameter series 7,8.

OUTER RING

Tolerance in μm.

D
mm 		ΔDmp VDp2)4) VDmp4) Kea ΔCs VCs
Open
Bearings 		Capped
Bearings3)
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
18 		6
18
30 		0
0
0 		-7
-7
-8 		9
9
10 		7
7
8 		5
5
6 		9
9
10 		5
5
6 		8
8
9 		ldentical to
ΔBs and VBs
of inner ring of
same bearing
30
50
80 		50
80
120 		0
0
0 		-9
-11
-13 		11
14
16 		8
11
16 		7
8
10 		13
16
20 		7
8
10 		10
13
18
120
150
180 		150
180
250 		0
0
0 		-15
-18
-20 		19
23
25 		19
23
25 		11
14
15 		25
30
- 		11
14
15 		20
23
25

Notes:
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 disestablishing of snap rings.

Inch-dimension equivalent formula 1 inch = 25.4 mm
1 mm = 0.0393700787 inch

DEEP GROOVE BALL BEARING TOLERANCE CLASS ABEC-5 (P5)

INNER RING

Tolerance in μm.

d
mm 		Δdmp Vdp2) Vdmp Kia Sd Sia3) ΔBs VBs
Diameter
Series
9 0,1,2,3,4
over incl. high low max. max. max. max. max. high low max.
1)0.6
2.5
10 		2.5
10
18 		0
0
0 		-5
-5
-5 		5
5
5 		4
4
4
 3
3
3 		4
4
4 		7
7
7 		7
7
7 		0
0
0 		-40
-40
-80 		5
5
5
18
30
50 		30
50
80 		0
0
0 		-6
-8
-9 		6
8
9 		5
6
7
 3
4
5 		4
5
5 		8
8
8 		8
8
8 		0
0
0 		-120
-120
-150 		5
5
6
80
120 		120
180 		0
0 		-10
-13 		10
13 		8
10
 5
7 		6
8 		9
10 		9
10 		0
0 		-200
-250 		7
8

Notes:
1) 0.6 is included.       3) Fit for groove ball bearing only.
2) No values for diameter series 7,8.

OUTER RING

Tolerance in μm.

D
mm 		ΔDmp VDp2)3) VDmp Kea SD4) Sea4)5) ΔCs VCs
Diameter Series
9 0,1,2,3,4
over incl. high low max. max. max. max. max. high low max.
1)2.5
6
18 		6
18
30 		0
0
0 		-5
-5
-6 		5
5
6 		4
4
5 		3
3
3 		5
5
6 		8
8
8 		8
8
8 		ldentical to
ΔBs of inner ring of same bearing 		5
5
5
30
50
80 		50
80
120 		0
0
0 		-7
-9
-10 		7
9
10 		5
7
8 		4
5
5 		7
8
10 		8
8
9 		8
10
11 		5
6
8
120
150
180 		150
180
250 		0
0
0 		-11
-13
-15 		11
13
15 		8
10
11 		6
7
8 		11
13
15 		10
10
11 		13
14
15 		8
8
10

Notes:
1) 2.5 is included.                                               4) No values for flanged bearings.
2) No values for diameter series 7,8.                   3) No values for diameter series 9.
3) No values for shielded and sealed bearings.

Inch-dimension equivalent formula 1 inch = 25.4 mm
1 mm = 0.0393700787 inch

DEEP GROOVE BALL BEARING TOLERANCE CLASS ABEC-7 (P4)

INNER RING

Tolerance in μm.

d
mm 		Δdmp Δds Vdp2) Vdmp Kia Sd Sia ΔBs VBs
Diameter
Series
9,8,9 1,7,2,3,4
over incl. high low high low max. max. max. max. max. high low max.
1)0.6
2.5
10 		2.5
10
18 		0
0
0 		-4
-4
-4 		0
0
0 		-4
-4
-4 		4
4
4 		3
3
3
 2
2
2 		2.5
2.5
2.5 		3
3
3 		3
3
3 		0
0
0 		-40
-40
-80 		2.5
2.5
2.5
18
30
50 		30
50
80 		0
0
0 		-5
-6
-7 		0
0
0 		-5
-6
-7 		5
6
7 		4
5
5
 2.5
3
3.5 		3
4
4 		4
4
5 		4
4
5 		0
0
0 		-120
-120
-150 		2.5
3
4
80
120 		120
180 		0
0 		-8
-10 		0
0 		-8
-10 		8
10 		6
8
 4
5 		5
6 		5
6 		5
7 		0
0 		-200
-250 		4
5

Notes:
1) 0.6 is included.
2) Diameter Series 7 refers to those defined by GB273.3 as the miniature bearing series 7.

OUTER RING

Tolerance in μm.

D
mm 		ΔDmp ΔDs VDp2) VDmp KCa SD Sea ΔCs VCs
Diameter Series
7,8,9 1,7,2,3,4
over incl. high low high low max. max. max. max. max. high low max.
1)2.5
6
18 		6
18
30 		0
0
0 		-4
-4
-5 		0
0
0 		-4
-4
-5 		4
4
5 		3
3
4 		2
2
2.5 		3
3
4 		4
4
4 		5
5
5 		ldentical to
ΔBs of inner ring of same bearing 		2.5
2.5
2.5
30
50
80 		50
80
120 		0
0
0 		-6
-7
-8 		0
0
0 		-6
-7
-8 		6
7
8 		5
5
6 		3
3.5
4 		5
5
6 		4
4
5 		5
5
6 		2.5
3
4
120
150
180 		150
180
250 		0
0
0 		-9
-10
-11 		0
0
0 		-9
-10
-11 		9
10
11 		7
8
8 		5
5
6 		7
8
10 		5
5
7 		7
8
10 		5
5
7

Notes:
1) 2.5 is included.                                               2) Not applicable for closed type bearings.
3) These windage is applicable for diameter series 1.7.2.3. and 4.
4) Diameter Series 7 refers to those defined by GB273.3 as the miniature bearing series 7.

Inch-dimension equivalent formula 1 inch = 25.4 mm
1 mm = 0.0393700787 inch

METRIC TAPERED ROLLER BEARINGS

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