Spur Gears - Norfolk Bearings and Supply Company, Inc.
Spur Gears - Norfolk Bearings and Supply Company, Inc.
Spur Gears - Norfolk Bearings and Supply Company, Inc.
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A<br />
<strong>Spur</strong> <strong>Gears</strong><br />
Approximate Horsepower <strong>and</strong> Torque* Ratings<br />
For Class I Service (Service Factor = 1.0)<br />
32 DIAMETRAL PITCH STEEL 14 1 ⁄2° PRESSURE ANGLE 3/16" FACE REFERENCE PAGE 19.<br />
No. 25 RPM 50 RPM 100 RPM 200 RPM 300 RPM 600 RPM 900 RPM 1200 RPM 1800 RPM 3600 RPM<br />
Teeth H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque<br />
16 .003 7.4 .01 7.3 .01 7.3 .02 7.1 .03 7.0 .06 6.6 .09 6.3 .11 5.9 .15 5.4 .24 4.2<br />
18 .003 8.9 .01 8.8 .01 8.7 .03 8.5 .04 8.3 .07 7.8 .10 7.3 .13 6.9 .18 6.1 .27 4.7<br />
20 .004 10.2 .01 10.2 .02 10.1 .03 9.8 .05 9.6 .08 8.9 .12 8.3 .15 7.8 .20 6.9 .30 5.2<br />
22 .005 11.7 .01 11.6 .02 11.4 .04 11.1 .05 10.8 .09 9.9 .13 9.3 .16 8.7 .22 7.6 .32 5.7<br />
24 .01 13.0 .01 12.9 .02 12.7 .04 12.3 .06 11.9 .10 10.9 .14 10.1 .18 9.4 .24 8.3 .34 6.0<br />
26 .01 14.5 .01 14.4 .02 14.1 .04 13.7 .06 13.3 .12 12.0 .16 11.1 .20 10.2 .26 8.9 .37 6.4<br />
28 .01 15.9 .01 15.1 .02 15.5 .05 14.9 .07 14.5 .12 13.1 .17 12.0 .21 11.0 .27 9.5 .39 6.8<br />
30 .01 17.3 .01 17.0 .03 16.7 .05 16.1 .07 15.5 .13 13.9 .18 12.7 .22 11.7 .29 10.0 .40 7.0<br />
32 .01 18.9 .01 18.7 .03 18.3 .06 17.6 .08 16.9 .14 15.2 .20 13.7 .24 12.6 .31 10.7 .43 7.4<br />
40 .01 24.5 .02 24.2 .04 23.6 .07 22.4 .10 21.3 .18 18.7 .24 16.7 .29 15 .36 12.5 .48 8.4<br />
48 .01 29.9 .02 29.4 .05 28.5 .09 26.8 .12 25.4 .21 21.8 .27 19.1 .32 17 .40 13.9 .52 9.0<br />
56 .01 35.7 .03 35 .05 33.8 .10 31.5 .14 29.6 .24 24.9 .31 21.6 .36 18.9 .44 15.3 .55 9.7<br />
64 .02 41.4 .03 40.6 .06 38.9 .11 36 .16 33.5 .26 27.8 .34 23.7 .39 20.7 .47 16.5 .58 10.2<br />
80 .02 52.4 .04 51 .08 48.5 .14 44.2 .19 40.6 .31 32.5 .39 27.2 .44 23.3 .52 18.2<br />
96 .02 62.6 .05 60.6 .09 57.1 .16 51.2 .22 46.4 .34 36.2 .42 29.6 .48 25.1 .55 19.2<br />
128 .03 83.9 .06 80.6 .12 74.6 .21 64.9 .27 57.5 .41 42.7 .49 34 .54 28.3<br />
160 .04 106 .08 101 .15 92.1 .25 78.2 .32 67.8 .46 48.6 .54 37.9<br />
192 .05 126 .09 119 .17 107 .28 88.4 .36 75.4 .50 52.4 .57 40.1<br />
24 DIAMETRAL PITCH STEEL 14 1 ⁄2° PRESSURE ANGLE 1/4" FACE REFERENCE PAGE 20.<br />
No. 25 RPM 50 RPM 100 RPM 200 RPM 300 RPM 600 RPM 900 RPM 1200 RPM 1800 RPM 3600 RPM<br />
Teeth H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque<br />
12 .004 10.9 .01 10.8 .02 10.7 .03 10.5 .05 10.3 .09 9.7 .13 9.2 .17 8.7 .22 7.9 .35 6.1<br />
14 .01 14.2 .01 14.1 .02 13.9 .04 13.6 .06 13.3 .12 12.4 .17 11.6 .21 10.9 .28 9.8 .43 7.5<br />
15 .01 15.8 .01 15.7 .02 15.5 .05 15.1 .07 14.7 .13 13.7 .18 12.8 .23 12 .31 10.7 .46 8.0<br />
16 .01 17.5 .01 17.4 .03 17.2 .05 16.7 .08 16.2 .14 15 .20 14 .25 13.1 .33 11.6 .49 8.6<br />
18 .01 20.9 .02 20.7 .03 20.4 .06 19.8 .09 19.2 .17 17.6 .23 16.3 .29 15.1 .38 13.3 .55 9.7<br />
20 .01 24.3 .02 24.1 .04 23.7 .07 22.9 .11 22.1 .19 20.1 .26 18.5 .33 17.1 .42 14.8 .61 10.6<br />
21 .01 26.1 .02 25.8 .04 25.4 .08 24.5 .11 23.6 .20 21.4 .28 19.6 .34 18.1 .45 15.6 .63 11.0<br />
24 .01 30.7 .02 30.4 .05 29.7 .09 28.5 .13 27.5 .23 24.6 .32 22.3 .39 20.4 .50 17.4 .69 12.0<br />
30 .02 40.7 .03 40.2 .06 39.2 .12 37.2 .17 35.5 .30 31.1 .40 27.7 .48 24.9 .60 20.8 .80 13.9<br />
36 .02 51.2 .04 50.4 .08 48.8 .15 46 .21 43.5 .36 37.3 .47 32.7 .55 29.1 .68 23.9 .89 15.5<br />
42 .02 60.7 .05 59.6 .09 59.5 .17 53.6 .24 50.3 .40 42.4 .52 36.6 .61 32.3 .74 26 .94 16.5<br />
48 .03 70.4 .05 68.9 .11 66.2 .19 61.3 .27 57 .45 47.2 .58 40.3 .67 35.1 .80 28 .99 17.4<br />
60 .04 90 .07 87.7 .13 83.3 .24 75.9 .33 69.6 .53 55.9 .67 46.6 .76 40 .89 31.2<br />
72 .04 109 .08 106 .16 99.8 .28 89.5 .39 81 .60 63.2 .74 51.8 .84 43.9 .96 33.6<br />
96 .06 147 .11 141 .21 130 .36 113 .48 100 .71 74.7 .85 59.5 .94 49.5<br />
120 .07 185 .14 175 .25 159 .43 135 .56 118 .80 84.3 .94 65.7 1.07 56.4<br />
144 .09 219 .16 207 .29 185 .49 153 .62 131 .86 90.8 .99 69.6<br />
Ratings are based on strength calculation. Basic static strength rating, or for h<strong>and</strong> operation of above gears is approximately 3 times the 100 RPM rating.<br />
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.<br />
They should be used for interpolation purposes only.<br />
* Torque Ratings (Lb. Ins.).<br />
Ratings for brass gears are approximately 50% of steel ratings with same face width.<br />
50 Boston Gear 800-825-6544 P-1930-BG 04/10
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