ISO国际标准及中国标准

GRADE

Nominal Diameter

Ball Dia. Variation

Deviation From Spherical Form

Surface Roughness

To  mm

NO Larger Than    (U)

3

12.7

0.08

0.08

0.012

5

18

0.13

0.13

0.02

10

 

0.25

0.25

0.025

16

30

0.4

0.4

0.032

20

 

0.5

0.5

0.04

28

50

0.7

0.7

0.05

40

80

1

1

0.08

GRADE

LOt Dia. Variation

Gauge Interval

Preferred Gauge

Subgauge Interval

Subgauge

 

NO Larger Than   (u)

3

0.13

0.5

-5, -4.5, … -1, -0.5,0,+0.5 +1 … +4.5,+5

0.1

-0.2,-0.1,0,+0.1,+0.2

5

0.25

1

-5, -4, … -2, -1,0,+1 +2 … +4,+5

0.2

-0.4,-0.2,0,+0.2,+0.4

10

0.5

1

-9, -8, … -2, -1,0,+1 +2 … +8,+9

0.2

-0.4,-0.2,0,+0.2,+0.4

16

0.8

2

-10, -8, … -4, -2,0,+2 +4 … +8,+10

0.4

-0.8,-0.4,0,+0.4,+0.8

20

1

2

-10, -8, … -4, -2,0,+2 +4 … +8,+10

0.4

-0.8,-0.4,0,+0.4,+0.8

28

1.4

2

-12, -10, … -4, -2,0,+2 +4 … +10,+12

0.4

-0.8,-0.4,0,+0.4,+0.8

40

2

4

-16, -12, … -8,-4,0,+4 +8 … +12,+16

0.8

-1.6,-0.8,0,+0.8,+1.6

钢球的级别是由公差及钢球表面所决定的。
ISO 国际标准,AFBMA 美国标准,DIN 德国标准已被广泛采用,若客户要求按自己的标准或要求供货我公司仍可接受。
STEEL BALL GRADE IS DECIDED BY TOLERANCE AND SURFACE ROUGHNESS.
INTERNATIONAL STANDARDS LIKE ISO & AFBMA FROM USA AND DIN FROM GERMAN ARE WIDELY ACCEPTED IN THE WORLD. BUT BUYER'S OWN SPECIFIC STANDARDS AL SO CAN BE APPLIED, WHEN NECESSARY.

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