r6 tolerance (shaft, IT6)
Shaft tolerance class r6 per ISO 286-1:2010: fundamental deviation ei +10 … +132, grade IT6 (6 µm at ≤ 3 mm to 40 µm at 400–500 mm). For an exact size, open the calculator with r6 selected.
- Type
- Shaft
- Grade
- IT6
- Tolerance
- 6 … 40 µm
- Fund. deviation
- ei +10 … +132 µm
r6 limits by size range
| Size (mm) | Upper (µm) | Lower (µm) | Ø max (mm) | Ø min (mm) | Upper (mm) | Lower (mm) | Dev. (in) |
|---|---|---|---|---|---|---|---|
| ≤ 3 | +16 | +10 | 3.016 | 3.010 | +0.016 | +0.010 | +0.00063 / +0.00039 |
| 3 – 6 | +23 | +15 | 6.023 | 6.015 | +0.023 | +0.015 | +0.00091 / +0.00059 |
| 6 – 10 | +28 | +19 | 10.028 | 10.019 | +0.028 | +0.019 | +0.00110 / +0.00075 |
| 10 – 14 | +34 | +23 | 14.034 | 14.023 | +0.034 | +0.023 | +0.00134 / +0.00091 |
| 14 – 18 | +34 | +23 | 18.034 | 18.023 | +0.034 | +0.023 | +0.00134 / +0.00091 |
| 18 – 24 | +41 | +28 | 24.041 | 24.028 | +0.041 | +0.028 | +0.00161 / +0.00110 |
| 24 – 30 | +41 | +28 | 30.041 | 30.028 | +0.041 | +0.028 | +0.00161 / +0.00110 |
| 30 – 40 | +50 | +34 | 40.050 | 40.034 | +0.050 | +0.034 | +0.00197 / +0.00134 |
| 40 – 50 | +50 | +34 | 50.050 | 50.034 | +0.050 | +0.034 | +0.00197 / +0.00134 |
| 50 – 65 | +60 | +41 | 65.060 | 65.041 | +0.060 | +0.041 | +0.00236 / +0.00161 |
| 65 – 80 | +62 | +43 | 80.062 | 80.043 | +0.062 | +0.043 | +0.00244 / +0.00169 |
| 80 – 100 | +73 | +51 | 100.073 | 100.051 | +0.073 | +0.051 | +0.00287 / +0.00201 |
| 100 – 120 | +76 | +54 | 120.076 | 120.054 | +0.076 | +0.054 | +0.00299 / +0.00213 |
| 120 – 140 | +88 | +63 | 140.088 | 140.063 | +0.088 | +0.063 | +0.00346 / +0.00248 |
| 140 – 160 | +90 | +65 | 160.090 | 160.065 | +0.090 | +0.065 | +0.00354 / +0.00256 |
| 160 – 180 | +93 | +68 | 180.093 | 180.068 | +0.093 | +0.068 | +0.00366 / +0.00268 |
| 180 – 200 | +106 | +77 | 200.106 | 200.077 | +0.106 | +0.077 | +0.00417 / +0.00303 |
| 200 – 225 | +109 | +80 | 225.109 | 225.080 | +0.109 | +0.080 | +0.00429 / +0.00315 |
| 225 – 250 | +113 | +84 | 250.113 | 250.084 | +0.113 | +0.084 | +0.00445 / +0.00331 |
| 250 – 280 | +126 | +94 | 280.126 | 280.094 | +0.126 | +0.094 | +0.00496 / +0.00370 |
| 280 – 315 | +130 | +98 | 315.130 | 315.098 | +0.130 | +0.098 | +0.00512 / +0.00386 |
| 315 – 355 | +144 | +108 | 355.144 | 355.108 | +0.144 | +0.108 | +0.00567 / +0.00425 |
| 355 – 400 | +150 | +114 | 400.150 | 400.114 | +0.150 | +0.114 | +0.00591 / +0.00449 |
| 400 – 450 | +166 | +126 | 450.166 | 450.126 | +0.166 | +0.126 | +0.00654 / +0.00496 |
| 450 – 500 | +172 | +132 | 500.172 | 500.132 | +0.172 | +0.132 | +0.00677 / +0.00520 |
Deviations at the upper end of each range (Ø columns use that size); use the calculator for the exact size. — : not defined by ISO 286 for that size. Upper/Lower (mm) and inch columns are shown on wider screens.
About r6
r6 denotes a shaft tolerance zone with press deviation in the ISO 286 system. It is used in H7/r6 (Press fit transmitting moderate torque; can be dismantled with a press, e.g. bushes, gear rims, shaft collars.).
At Ø25 mm r6 is +0.041 / +0.028 mm, i.e. 25.028 to 25.041 mm.
How the limits are calculated
r6 uses grade IT6 (a standard tolerance of 13 µm at 18–30 mm). Fundamental deviation: ei is tabulated directly by ISO 286-1 Table 2; es = ei + IT6. See the fundamental deviation table for every letter. Values per ISO 286-1:2010.