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Straight Spline Dimensional Information
The benefits of using a splined shaft in the place of a keyed shaft are many: The spline connection provides an equally distributed load along the sides of the teeth. This shared load provides a longer fatigue life vs. a keyway drive.
Splined shafts and hubs are commonly found in automotive gearboxes or anywhere a rotational drive has to be combined with a lateral movement.
The charts below gives the dimensions for Metric Straight Sided Splines - BS5656:1986
Dimensions shown are in mm, if you wish to convert to Inches, please use our universal converter.
STRAIGHT SIDED SPLINES DIMENSIONS - BS5656:1986
![[object Object]](/assets/images/hVLUQaoQwy-300.jpeg)
| STRAIGHT SIDED SPLINE DIMENSIONS - BS5686:1986, ISO 14-1982 | ||||||||
|---|---|---|---|---|---|---|---|---|
| d | LIGHT SERIES | MEDIUM SERIES | ||||||
| DESIGNATION | N | D | B | DESIGNATION | N | D | B | |
| mm | mm | mm | mm | mm | mm | mm | ||
| 11 | 6 x 11 x 14 | 6 | 14 | 3 | ||||
| 13 | 6 x 13 x 16 | 6 | 16 | 3,5 | ||||
| 16 | 6 x 16 x 20 | 6 | 20 | 4 | ||||
| 18 | 6 x 18 x 22 | 6 | 22 | 5 | ||||
| 21 | 6 x 21 x 25 | 6 | 25 | 5 | ||||
| 23 | 6 x 23 x 26 | 6 | 26 | 6 | 6 x 23 x 28 | 6 | 28 | 6 |
| 26 | 6 x 26 x 30 | 6 | 30 | 6 | 6 x 26 x 32 | 6 | 32 | 6 |
| 28 | 6 x 28 x 32 | 6 | 32 | 7 | 6 x 28 x 34 | 6 | 34 | 7 |
| 32 | 8 x 32 x 36 | 8 | 36 | 6 | 8 x 32 x 38 | 8 | 38 | 6 |
| 36 | 8 x 36 x 40 | 8 | 40 | 7 | 8 x 36 x 42 | 8 | 42 | 7 |
| 42 | 8 x 42 x 46 | 8 | 46 | 8 | 8 x 42 x 48 | 8 | 48 | 8 |
| 46 | 8 x 46 x 50 | 8 | 50 | 9 | 8 x 46 x 54 | 8 | 54 | 9 |
| 52 | 8 x 52 x 58 | 8 | 58 | 10 | 8 x 52 x 60 | 8 | 60 | 10 |
| 56 | 8 x 56 x 62 | 8 | 62 | 10 | 8 x 56 x 66 | 8 | 65 | 10 |
| 62 | 8 x 62 x 68 | 8 | 68 | 12 | 8 x 62 x 72 | 8 | 72 | 12 |
| 72 | 10 x 72 x 78 | 10 | 78 | 12 | 10 x 72 x 82 | 10 | 82 | 12 |
| 82 | 10 x 82 x 88 | 10 | 88 | 12 | 10 x 82 x 92 | 10 | 92 | 12 |
| 92 | 10 x 92 x 98 | 10 | 98 | 14 | 10 x 92 x 102 | 10 | 102 | 14 |
| 102 | 10 x 102 x 108 | 10 | 108 | 16 | 10 x 102 x 112 | 10 | 112 | 16 |
| 112 | 10 x 112 x 120 | 10 | 120 | 18 | 10 x 112 x 125 | 10 | 125 | 18 |
STRAIGHT SIDED SPLINES TOLERANCES
![[object Object]](/assets/images/lCtHDlwlqh-300.jpeg)
| TOLERANCE ON HOLE | TOLERANCE ON SHAFT | TYPE OF FIT | |||||||
|---|---|---|---|---|---|---|---|---|---|
| NOT TREATED AFTER BROACHING | TREATED AFTER BROACHING | ||||||||
| B | D | d | B | D | d | B | D | d | |
| H9 | H10 | H7 | H11 | H10 | H7 | d10 | a11 | f7 | Sliding |
| f9 | a11 | g7 | Close fit | ||||||
| h10 | a11 | h7 | Fixed | ||||||
| TOLERANCE SYMMETRY | ||||
|---|---|---|---|---|
| SPLINE WIDTH (B) | 3 | 3,5 4 5 6 | 7 8 9 10 | 12 14 16 18 |
| TOLERANCE OF SYMMETRY (t) | 0,010 (IT7) | 0,012 (IT7) | 0,015 (IT7) | 0,018 (IT7) |
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