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Key and keyway dimensions
Published Jul 25, 2012Below is a reference on shaft diameters and the corresponding keys / keyways according to the prevailing standards.
The table, to the best of our knowledge, complies with:
- DIN6885 Pt.1
- ISO R 773 and
- BS4235 Pt.1
Shaft Outer Diameter | Width | Height | Depth | Tolerance | Depth | Tolerance |
(OD) in mm | b | h | t1 | rt1 | t2 | rt2 |
over 6 to 8 | 2 | 2 | 1.2 | 0.1 | 1 | 0.1 |
over 8 to 10 | 3 | 3 | 1.8 | 0.1 | 1.4 | 0.1 |
over 10 to 12 | 4 | 4 | 2.5 | 0.1 | 1.8 | 0.1 |
over 12 to 17 | 5 | 5 | 3 | 0.2 | 2.3 | 0.2 |
over 17 to 22 | 6 | 6 | 3.5 | 0.2 | 2.8 | 0.2 |
over 22 to 30 | 8 | 7 | 4 | 0.2 | 3.3 | 0.2 |
over 30 to 38 | 10 | 8 | 5 | 0.2 | 3.3 | 0.2 |
over 38 to 44 | 12 | 8 | 5 | 0.2 | 3.3 | 0.2 |
over 44 to 50 | 14 | 9 | 5.5 | 0.2 | 3.8 | 0.2 |
over 50 to 58 | 16 | 10 | 6 | 0.2 | 4.3 | 0.2 |
over 58 to 65 | 18 | 11 | 7 | 0.2 | 4.4 | 0.2 |
over 65 to 75 | 20 | 12 | 7.5 | 0.2 | 4.9 | 0.2 |
over 75 to 85 | 22 | 14 | 9 | 0.2 | 5.4 | 0.2 |
over 85 to 95 | 25 | 14 | 9 | 0.2 | 5.4 | 0.2 |
over 95 to 110 | 28 | 16 | 10 | 0.2 | 6.4 | 0.2 |
over 110 to 130 | 32 | 18 | 11 | 0.2 | 7.4 | 0.2 |
over 130 to 150 | 36 | 20 | 12 | 0.3 | 8.4 | 0.3 |
over 150 to 170 | 40 | 22 | 13 | 0.3 | 9.4 | 0.3 |
over 170 to 200 | 45 | 25 | 15 | 0.3 | 10.4 | 0.3 |
over 200 to 230 | 50 | 28 | 17 | 0.3 | 11.4 | 0.3 |
over 230 to 260 | 56 | 32 | 20 | 0.3 | 12.4 | 0.3 |
over 260 to 290 | 63 | 32 | 20 | 0.3 | 14.4 | 0.3 |
over 290 to 330 | 70 | 36 | 22 | 0.3 | 15.4 | 0.3 |
over 330 to 380 | 80 | 40 | 25 | 0.3 | 17.4 | 0.3 |
over 380 to 440 | 90 | 45 | 28 | 0.3 | 17.4 | 0.3 |
over 440 to 500 | 100 | 50 | 31 | 0.3 | 19.5 | 0.3 |
Note
Motor Technology will not accept any liability for the accuracy of the data supplied. This sheet is meant as a guideline only.