Printed from Kezuriba (kezuriba.net/en/fits/shaft-h7/)
h7 tolerance (shaft) — limit deviations
Upper and lower limit deviations of shaft tolerance class h7 (shafts use lower-case letters), in µm (0.001 mm). Add them to the nominal size to get the permitted size range. Example: a Ø25 h7 shaft must be between 24.979 and 25.000 mm.
▤h7 limit deviations (µm)
| Nominal size (mm) | Upper | Lower | Tolerance | Calc |
|---|---|---|---|---|
| up to 3 | ±0 | −10 | 10 | → |
| over 3 to 6 | ±0 | −12 | 12 | → |
| over 6 to 10 | ±0 | −15 | 15 | → |
| over 10 to 14 | ±0 | −18 | 18 | → |
| over 14 to 18 | ±0 | −18 | 18 | → |
| over 18 to 24 | ±0 | −21 | 21 | → |
| over 24 to 30 | ±0 | −21 | 21 | → |
| over 30 to 40 | ±0 | −25 | 25 | → |
| over 40 to 50 | ±0 | −25 | 25 | → |
| over 50 to 65 | ±0 | −30 | 30 | → |
| over 65 to 80 | ±0 | −30 | 30 | → |
| over 80 to 100 | ±0 | −35 | 35 | → |
| over 100 to 120 | ±0 | −35 | 35 | → |
| over 120 to 140 | ±0 | −40 | 40 | → |
| over 140 to 160 | ±0 | −40 | 40 | → |
| over 160 to 180 | ±0 | −40 | 40 | → |
| over 180 to 200 | ±0 | −46 | 46 | → |
| over 200 to 225 | ±0 | −46 | 46 | → |
| over 225 to 250 | ±0 | −46 | 46 | → |
| over 250 to 280 | ±0 | −52 | 52 | → |
| over 280 to 315 | ±0 | −52 | 52 | → |
| over 315 to 355 | ±0 | −57 | 57 | → |
| over 355 to 400 | ±0 | −57 | 57 | → |
| over 400 to 450 | ±0 | −63 | 63 | → |
| over 450 to 500 | ±0 | −63 | 63 | → |
⊂⊃Common fits that use this class
Partners of h7 in the preferred fits of JIS B 0401 (1998), the Japanese counterpart of ISO 286. Click one to open it in the calculator.
📚Sources
We compared the technical documents below and use values that agree in at least two of them.
- MISUMI jp.misumi-ec.com
- NBK (Nabeya Bi-tech) fujiikougyou.sakura.ne.jpfujiikougyou.sakura.ne.jpfujiikougyou.sakura.ne.jp
- Mitsubishi Materials mitsubishicarbide.netmitsubishicarbide.net
- OSG osg.co.jp
- Tungaloy tungaloy.com
- NSK nsk.com
- Miki Pulley mikipulley.co.jpmikipulley.co.jp
- Tsubakimoto Chain tt-net.tsubakimoto.co.jp
- KHK (Kohara Gear) khkgears.co.jpkhkgears.co.jp