Product introduction
Product specification
External Dimension Tolerance (µm)
In principle, the table below excludes the ends of products in the 20 mm to 30 mm range (unshaded area) and end of products at 50 mm (shaded area), and tolerances of circularity for h7 grinding products and h9 drawn products is within 30% and the tolerance for cylindrical products is within 50%.
However, lower tolerance ranges and cylindricity of ferrite drawn stainless steel are excluded.
However, lower tolerance ranges and cylindricity of ferrite drawn stainless steel are excluded.
| Dimension category |
1.0～3.0 | 3.01～6.0 | 6.01～10.0 | 10.01～18.0 | 18.01～30.0 | 30.01～50.0 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| JIS | Upper limit |
Lower limit |
Upper limit |
Lower limit |
Upper limit |
Lower limit |
Upper limit |
Lower limit |
Upper limit |
Lower limit |
Upper limit |
Lower limit |
| h5 | +0 | -4 | +0 | -5 | +0 | -6 | Please inquire | |||||
| h6 | +0 | -6 | +0 | -8 | +0 | -9 | ||||||
| h7 | +0 | -10 | +0 | -12 | +0 | -15 | +0 | -18 | +0 | -21 | +0 | -25 |
| h8 | +0 | -14 | +0 | -18 | +0 | -22 | +0 | -27 | +0 | -33 | +0 | -39 |
| h9 | +0 | -25 | +0 | -30 | +0 | -36 | +0 | -43 | +0 | -52 | +0 | -62 |
| h10 | +0 | -40 | +0 | -48 | +0 | -58 | +0 | -70 | +0 | -84 | +0 | -100 |
* Please inquire concerning h4 tolerances and dimensions without an indication of tolerance.
Product link (mm)
| Nominal length | Length tolerance* | |
|---|---|---|
| Drawn products | 2,000～4,000 | +20，-0 |
| Grinding products | 2,000～4,000 | +20，-0 |
* Please inquire concerning lanes and length tolerances other than those indicated above.
Roundness precision
| Free cutting steel | Stainless steel | ||||
| Drawn products | Grinding products | Drawn products | Grinding products | ||
| Standard specification products | L=1,000 | Max0.6 | Max0.5 | Max0.8 | Max0.7 |
| Standard shaft specifications | L=1,000 | Max0.4 | Max0.3 | Max0.6 | Max0.5 |
| L=400 | Max0.08 | Max0.06 | Max0.15 | Max0.1 | |
| High precision shaft specifications | Please inquire concerning high-precision shaft products | ||||
Service Roughness
| Dimensions (mm) | Rz (10-point average roughness)* | Ry (maximum roughness)* | |
|---|---|---|---|
| Grinding products | φ1.0～φ20.0 | 2.5 or less | 3.2 or less |
Drawn products |
φ2.0～φ6.0 | 5.0 or less (reference value) | － |
| φ6.01～φ10.0 | 7.0 or less (reference value) | － | |
| φ10.01～φ20.0 | 10.0 or less (reference value) | － |
* Surface roughness is based on JIS B0601-1994, the former standard prior to revision.