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DIN 5401 INTERNATIONAL STANDARDS
DIN 5401:2002-08 (GERMAN STANDARDS)
GRADE
Class
Nominal diameter Dw (mm)
Limit deviations(µm)(5)
Ball diameter variation
Roundness error
Surface roughness (6)
Variation of Lot diameter (5)
Subgauge interval
Subgauges (µm) (7)
From
To
VDws
Max.(µm)
tDws
Max.(µm)
RaMax.
(µm)
VDwL
Max. (µm)
VDwA
Max. (µm)
IG,ST
(µm)
G3
-
-
12.7
±5.32
0.08
0.08
0.010
0.130
-
0.5
-5~-0.5,0,+0.5~+5
G5
Ⅰ
-
12.7
±5.63
0.13
0.13
0.014
0.250
-
1
-5~-1,0,+1~+5
G10
Ⅱ
-
25.4
±9.75
0.25
0.25
0.020
0.500
-
1
-9~-1,0,+1~+9
G16
Ⅱ
-
25.4
±11.4
0.40
0.40
0.025
0.800
-
2
-10~-2,0,+2~+10
G20
Ⅲ
-
38.1
±11.5
0.50
0.50
0.032
1.0
-
2
-10~-2,0,+2~+10
G28
Ⅲ
-
50.8
±13.7
0.70
0.70
0.050
1.4
-
2
-12~-2,0,+2~+12
G40
Ⅲ
-
100
±19
1.0
1.0
0.060
2.0
-
4
-16~-4,0,+4~16
G80
Ⅲ
-
100
±14
2.0
2.0
0.10
-
4.0
4
-12~-4,0,+4~+12
G100
Ⅲ
-
150
±47.5
2.5
2.5
0.10
5.0
-
10
-40~-10,0,+10~+40
G200
Ⅳ
-
150
±72.5
5.0
5.0
0.15
10
-
10
-60~-10,0,+10~+60
G300
Ⅳ
-
25.4
±70
10
10
0.20
-
20
20
-60~-20,0,+20~+60
G300
Ⅳ
25.4
50.8
±105
15
15
0.20
-
30
30
-90~-30,0,+30~+90
G300
Ⅳ
50.8
75
±140
20
20
0.20
-
40
40
-120~-40,0,+40~+120
G500
Ⅴ
-
25.4
±75
25
25
-
-
50
50
-50,0,+50
G500
Ⅴ
25.4
50.8
±112.5
25
25
-
-
75
75
-75,0,+75
G500
Ⅴ
50.8
75
±150
25
25
-
-
100
100
-100,0,+100
G500
Ⅴ
75
100
±187.5
32
32
-
-
125
125
-125,0,+125
G500
Ⅴ
100
125
±225
38
38
-
-
150
150
-150,0,+150
G500
Ⅴ
125
150
±262.5
44
44
-
-
175
175
-175,0,+175
G600
Ⅵ
ALL
ALL
±200
-
-
-
-
400
-
-
G700
Ⅵ
ALL
ALL
±1000
-
-
-
-
2000
-
-


(1)In some cases and subject to agreement, half the gauge interval values may be used for grades G16, G20, G28 and G300.

(2)Not specified in ISO 3290.

(3)Not specified in ISO 3290.

(4)Not specified in ISO 3290.

(5)Values relate to the mean diameter of a ball, Dwm.

(6)See DIN EN ISO 4288. For smaller ball sizes (not covered ib this standard), values are subject to agreement.

(7)Graded in intervals equal to IG.