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A. Steel Cold Drawn Bar Qualities
Standard Diameter Tolerance and Surface Roughness |
Size (mm) |
JIS Diameter Tolerance |
Surface Roughness
10 points Average, Rz |
H8 (µ) |
h9 (µ) |
H10(µ) |
H11 (µ) |
3.01-6.00 |
+0,-18 |
+0,-30 |
+0,-48 |
+0,-75 |
< 5.0 (reference) |
6.01-10.00 |
+0,-22 |
+0,-36 |
+0,-58 |
+0,-90 |
< 7.0 (reference) |
10.01-18.00 |
+0,-27 |
+0,-43 |
+0,-70 |
+0,-110 |
< 10.0 (reference) |
18.01-30.00 |
+0,-33 |
+0,-52 |
+0,-84 |
+0,-130 |
< 15.0 (reference) |
30.01-40.00 |
+0,-39 |
+0,-62 |
+0,-100 |
+0,-160 |
< 20.0 (reference) |
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B. Standard Straightness (mm) |
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Free Cutting Steel |
For general product L = 1000mm |
Max TIR 0.70 |
For general shaft L = 1000mm |
Max TIR 0.40 |
L = 400mm |
Max TIR 0.08 |
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C. Standard Product Length |
Diameter (mm) |
4.00 – 38.10 |
Nominal Length (mm) |
2500 – 6100 |
Length Tolerance (mm) |
+25,0 |
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D. Bar Ends Chamfer Shape (mm) |
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E. Application of Tolerance Grades |
Shape
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Cold Drawn Bar |
Ground Bar |
| Round |
h8, h9, h10 |
h6, h7, h9 |
| Square |
h10, h11 |
- |
| Hexagon |
h11, h12 |
- |
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F. Cold Drawn Polished Shaft Classification & Grades |
Classification |
JIS Standard |
Equivalent Standard |
Product Range |
Standard No |
Grade |
Standard No |
Grade |
Size (mm) |
Carbon Steel Shaft |
JIS G3101 |
SS400 |
ASTM |
A36-96 |
4-38.1 |
JIS G3505 |
SWRM 8K,10K,12K |
- |
- |
4-38.1 |
JIS G3108 |
SGD1,2,3KM, A & B |
AISI |
- |
4-38.1 |
JIS G4051 |
S10C to S45C |
AISI |
1010 to 1045 |
4-38.1 |
Stainless Steel Shaft |
JIS G4308 |
SUS201,SUS202,303CU,
304, 316, 416, 420, 430 |
AISI |
201, 202, 303
304, 316, 416, 420,430 |
4-30.0 |
Free Cutting Shaft |
JIS G4804 |
SUM22, SUM23, SUM24L,
SUM41, SUM43 |
AISI |
1213, 1215, 12L14, 1137, 1144 |
4-38.1 |
All Other Cold Drawn Grades |
Upon request |
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Remarks: WZSB also produce Cold drawn wire similar Grades Shown |
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