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
