TECHNICAL INFO Ball Bearing Spec  
 

Based on 4.762mm (3/16"), we use seven diffenret size of ball bearing between 4.672~4.812mm to maintain soild steady and smooth slide movement. We use domestic produced Grade 100 high tolerance ball bearing.

 

Material

Size

Grade

Inch

Metric

Carbon Ball

KS SM 10C~25C
45C~75C

3/16"

4.762

G100

Grade and Tolerance

Grade

Size

VDWS
(Max)

W
(Max)

Ra
(Max)

VDWL(MAX)

Gap of
GaGE

Inch

Metric

5
10

0.025~1/2
0.025~1

0.3~12mm
0.3~25mm

0.13
0.25

0.13
0.25

0.02
0.025

0.25
0.5

1
1

16
20
28

0.025~1
0.025~1 1/2
0.025~1 1/2

0.3~25mm
0.3~38mm
0.3~38mm

0.4
0.5
0.7

0.4
0.5
0.7

0.032
0.04
0.05

0.8
1
1.4

2
2
2

40
60
100

0.025~2
0.025~3
0.025~3

0.3~50mm
0.3~65mm
0.3~65mm

1
1.5
2.5

1
1.5
2.5

0.08
0.095
0.125

2
3
5

4
5
10

200
500
1000

0.025~3
0.025~3
0.025~3

0.3~65mm
0.3~65mm
0.3~65mm

5
12.5
25

5
12.5
25

0.2
-
-

10
25
50

15
30
50

① Unit : ㎛
② Reference Standurd : AFBMA 10 - 1989
③ Grade : Basic diameter tolerance by10(-6) inch
④ VDWS : Ball Diamer Variation
⑤ W : Deviation From Spherical Form
⑥ Ra : Surface Roughness
⑦ VDWL : Lot Diameter Variation