Spline Dimensions: fillet_root
Involute spline dimensions per ANSI B92.1-1970 (R1993) / 1996 — pitch diameter, major and minor diameters (external and internal), base circle diameter, circular pitch, and tooth thickness for 30-degree pressure angle splines across diametral pitches 2.5/5 through 20/40. Covers flat root side fit, fillet root side fit, and major diameter fit profiles.
| spline type | record id | base circle dia in (in) | circular pitch in (in) | diametral pitch | fit class | major dia ext in (in) | major dia int in (in) | minor dia ext in (in) | minor dia int in (in) | module equiv (mm) | notes | num teeth (count) | pitch dia in (in) | pitch dia mm (mm) | pressure angle deg (deg) | root type | tooth thickness in (in) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| fillet_root | fil_10_16 | 1.3856 | 0.3142 | 10/20 | side_fit | 1.7 | 1.68 | 1.42 | 1.5 | 2.54 | Pitch 10/20 fillet root; D=1.600; Dre=D-1.80/P=1.420; Di=D-1.0/P=1.500; Dri=(N+0.8)/P=1.680 | 16 | 1.6 | 40.64 | 30 | fillet | 0.1571 |
| fillet_root | fil_10_24 | 2.0785 | 0.3142 | 10/20 | side_fit | 2.5 | 2.48 | 2.22 | 2.3 | 2.54 | Pitch 10/20 fillet root; D=2.400 | 24 | 2.4 | 60.96 | 30 | fillet | 0.1571 |
| fillet_root | fil_16_13 | 0.7035 | 0.1963 | 16/32 | side_fit | 0.875 | 0.8625 | 0.7 | 0.75 | 1.5875 | Pitch 16/32 fillet root; D=0.813; Dre=D-1.80/P=0.700; Di=D-1.0/P=0.750; Dri=(N+0.8)/P=0.863 | 13 | 0.8125 | 20.638 | 30 | fillet | 0.0982 |
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