Machinery's Handbook, 31st Edition
2338
Involute Splines Table 4. Maximum Tolerances for Space Width and Tooth Thickness of Tolerance Class 5 Splines ANSI B92.1-1996 (Values shown in ten thousandths; 20 = 0.0020)
Pitch, P / P s
No. of Teeth
2.5 ∕ 5 and 3 ∕ 6
4 ∕ 8 and 5 ∕ 10
6 ∕ 12 and 8 ∕ 16
10 ∕ 20 and 12 ∕ 24
16 ∕ 32 and 20 ∕ 40
24 ∕ 48 thru 48 ∕ 96
64 ∕ 128 and 80 ∕ 160
128 ∕ 256
Machining Tolerance, m
N
10 20 30 40 50 60 70 80
15.8 17.6 18.4 21.8 23.0 24.8
14.5 12.5 16.0 14.0 17.5 15.5 19.0 17.0 20.5 18.5 22.0 20.0
12.0 13.0 14.0 15.0 16.0 17.0
11.7 12.4 13.1 13.8 14.5 15.2 15.9 16.6 17.3 18.0 14.2 15.4 16.6 17.8 19.0 20.2 21.4 22.6 23.8 25.0
11.7 12.4 13.1 13.8 14.5 15.2 15.9 16.6 17.3 18.0 12.2 13.4 14.6 15.8 17.0 18.2 19.4 20.6 21.8 23.0
9.6 10.2 10.8 11.4
9.5 10.0 10.5
—
— — — — — — — — — — — —
— — — 18.0 — — — 19.0 — — — 20.0 — — — 21.0
90 100
Variation Allowance, λ
N
10 20 30 40 50 60 70 80
23.5 27.0 30.5 34.0 37.5 41.0
20.3 17.0 22.6 19.0 24.9 21.0 27.2 23.0 29.5 25.0 31.8 27.0
15.7 17.4 19.1 21.6 22.5 24.2
11.0 12.0 13.0 14.0
9.8 10.6 11.4
—
— — — — — — — — — — — —
— — — 25.9 — — — 27.6 — — — 29.3 — — — 31.0
90 100
Total Index Variation
N
10 20 30 40 50 60 70 80
20 24 28 32 36 40
17 20 22 25 27 30
15 18 20 22 25 27
15 17 19 20 22 24 26 28 29 31 +4 − 6
14 15 16 18 19 20 21 22 24 25 +3 − 5
12 13 15 16 17 18 20 21 23 24 +2 − 4
11 12 14 15
10 11 13
—
— — — — — — — — — — — —
— — — — — — — — — — — —
90 100
Profile Variation
N
+7 − 10
+6 − 8
+5 − 7
+2 − 4
+2 − 4
All
Lead Variation
L g , in.
0.3 0.5 12345678910 2 3 4 5 6 7 8 910111213
Variation
For other tolerance classes: Class 4 = 0.71 × Tabulated value Class 5 = As tabulated in table Class 6 = 1.40 × Tabulated value Class 7 = 2.00 × Tabulated value
Copyright 2020, Industrial Press, Inc.
ebooks.industrialpress.com
Made with FlippingBook - Share PDF online