108 Machine Drawing
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d:\N-Design\Des6-1.pm5 Sixth Print
Table 6.2 Proportions for splined shafts of various sizesNominal (major) Number of Minor (root) Width of spline,
diameter, D 1 (mm) splines diameter, D 2 (mm) W (mm)14 6 11 3
16 6 13 3.5
20 6 16 422 6 18 5
25 6 21 5
28 6 23 632 6 26 6
34 6 28 6
38 8 32 742 8 36 7
48 8 42 8
54 8 46 960 8 52 10
65 8 56 10
72 8 62 1282 10 72 12
92 10 82 12
102 10 92 146.2.2.4 Woodruff Key
It is a sunk key, in the form of a segment of a circular disc of uniform thickness (Fig. 6.8a).
As the bottom surface of the key is circular, the keyway in the shaft is in the form of a circular
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T
W
(a) (b)rFig. 6.8 Woodruff key