Spur Gears - Norfolk Bearings and Supply Company, Inc.

Roller Chain Drives
Horsepower Ratings for ANSI Roller Chains
See Horsepower Ratings, page 259
Small
Sprocket
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 40-1/2” PITCH
RPM
Teeth P.D.
10 20 30 50 75 100 125 150 200 250 300 400 500 600 900 1200 1500 1800 2400 3000
11 1.77 .054 .10 .15 .23 .33 .43 .53 .62 .80 .98 1.16 1.50 1.84 2.16 3.11 4.03 4.93 4.66 3.03 2.17
13 2.09 .065 .12 .17 .28. .40 .52 .63 .74 .96 1.18 1.39 1.80 2.20 2.59 3.73 4.83 5.91 5.99 3.89 2.79
15 2.40 .076 .14 .20 .32 .46 .60 .74 .87 1.12 1.37 1.62 2.10 2.56 3.02 4.35 5.64 6.89 7.43 4.82 3.45
17 2.72 .087 .16 .23 .37 .53 .69 .84 .99 1.29 1.57 1.85 2.40 2.94 3.45 4.98 6.45 7.89 8.96 5.82 4.17
19 3.04 .098 .18 .26 .42 .60 .78 .95 1.12 1.45 1.77 2.09 2.71 3.31 3.90 5.62 7.27 8.89 10.5 6.88 4.92
21 3.35 .109 .20 .29 .46 .67 .87 1.06 1.25 1.62 1.98 2.33 3.02 3.69 4.34 6.26 8.11 9.91 11.7 7.99 5.72
23 3.67 .120 .22 .32 .51 .74 .96 1.17 1.38 1.78 2.18 2.57 3.33 4.07 4.79 6.90 8.94 10.9 12.9 9.16 6.55
25 3.99 .132 .25 .35 .56 .81 1.05 1.28 1.51 1.95 2.38 2.81 3.64 4.45 5.24 7.55 9.78 12.0 14.1 10.4 7.43
Lubrication # Type I Type II Type III Type IV
Small
Sprocket
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 50-5/8” PITCH
RPM
Teeth P.D.
10 20 30 50 75 100 125 150 200 250 300 400 600 900 1200 1500 1800 2100 2400 2700
11 2.22 .11 .20 .28 .45 .65 .84 1.03 1.21 1.56 1.91 2.25 2.92 4.21 6.07 7.86 7.44 5.58 4.42 3.62 3.04
13 2.61 .13 .24 .34 .54 .78 1.01 1.23 1.45 1.87 2.29 2.70 3.50 5.04 7.26 9.42 9.56 7.17 5.67 4.65 3.90
15 3.01 .15 .28 .40 .63 .90 1.17 1.43 1.69 2.19 2.67 3.15 4.08 5.88 8.48 11.0 11.9 8.89 7.03 5.76 4.83
17 3.40 .17 .32 .45 .72 1.04 1.34 1.64 1.93 2.50 3.06 3.60 4.67 6.73 9.70 12.6 14.3 10.7 8.48 6.95 5.83
19 3.80 .19 .36 .51 .81 1.17 1.51 1.85 2.18 2.82 3.45 4.06 5.27 7.59 10.9 14.2 16.9 12.7 10.0 8.22 6.89
21 4.19 .21 .40 .57 .90 1.30 1.69 2.06 2.43 3.15 3.85 4.53 5.87 8.46 12.2 15.8 19.3 14.7 11.6 9.55 8.01
23 4.59 .23 .44 .63 1.00 1.44 1.86 2.27 2.68 3.47 4.24 5.00 6.48 9.33 13.4 17.4 21.3 16.9 13.3 10.9 9.18
25 4.99 .26 .48 .69 1.09 1.57 2.04 2.49 2.93 3.80 4.64 5.47 7.09 10.2 14.7 19.1 23.3 19.1 15.1 12.4 10.4
Lubrication # Type I Type II Type III Type IV
Small
Sprocket
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 60-3/4” PITCH
RPM
10
Teeth P.D.
20 30 50 75 100 125 150 200 250 300 400 600 900 1200 1400 16001800 2000 2200 2400
11 2.66 .18 .34 .49 .78 1.11 1.44 1.76 2.07 2.69 3.29 3.87 5.02 7.23 10.5 11.9 9.45 7.70 6.49 5.51 4.78 4.20
13 3.13 .22 .41 .58 .93 1.33 1.72 2.11 2.48 3.22 3.94 4.64 6.01 8.65 12.5 15.3 12.1 9.89 8.34 7.08 6.14 5.39
15 3.61 .25 .47 .68 1.08 1.55 2.01 2.46 2.90 3.76 4.59 5.41 7.01 10.1 14.6 18.9 15.0 12.3 10.3 8.77 7.61 6.68
17 4.08 .29 .54 .78 1.24 1.78 2.30 2.82 3.32 4.31 5.26 6.20 8.03 11.6 16.7 21.7 18.2 14.8 12.5 10.6 9.18 8.06
19 4.56 .33 .61 .88 1.40 2.01 2.60 3.18 3.74 4.86 5.93 6.99 9.05 13.0 18.8 24.4 21.5 17.5 14.7 12.5 10.9 9.52
21 5.03 .37 .68 .98 1.56 2.24 2.89 3.54 4.17 5.41 6.61 7.78 10.1 14.5 21.0 27.2 24.9 20.3 17.1 14.5 12.6 11.1
23 5.51 .40 .75 1.08 1.72 2.47 3.19 3.91 4.60 5.97 7.29 8.59 11.1 16.0 23.2 30.2 28.6 23.3 19.6 16.7 14.4 12.7
25 5.98 .44 .82 1.18 1.88 2.70 3.49 4.28 5.04 6.53 7.98 9.40 12.2 17.5 25.4 32.9 32.4 26.4 22.3 18.9 16.4 14.4
Lubrication # Type I Type II Type III Type IV
Small
Sprocket
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 80-1” PITCH
RPM
Teeth P.D.
10 20 30 50 75 100 125 150 200 250 300 400 600 900 1000 1200 1400 1600 1800 2000 2200
11 3.55 .42 .79 1.14 1.80 2.60 3.36 4.11 4.84 6.28 7.67 9.04 11.7 16.9 23.0 19.6 14.9 11.8 9.69 8.12 6.94 6.01
13 4.18 .51 .95 1.36 2.16 3.11 4.03 4.92 5.80 7.51 9.19 10.8 14.0 20.2 29.1 25.2 19.2 15.2 12.5 10.4 8.91 7.72
15 4.81 .59 1.10 1.59 2.52 3.63 4.70 5.75 6.77 8.77 10.7 12.6 16.4 23.6 34.0 31.2 23.8 18.9 15.4 12.9 11.0 9.57
17 5.44 .68 1.26 1.82 2.88 4.15 5.38 6.58 7.75 10.0 12.3 14.5 18.7 27.0 38.9 37.6 28.7 22.7 18.6 15.6 13.3 11.5
19 6.08 .76 1.43 2.05 3.25 4.68 6.07 7.42 8.74 11.3 13.8 16.3 21.1 30.4 43.8 44.5 33.9 26.9 22.0 18.4 15.7 13.6
21 6.71 .85 1.59 2.29 3.62 5.22 6.76 8.27 9.74 12.6 15.4 18.2 23.6 34.0 48.9 51.7 39.4 31.2 25.6 21.4 18.3 15.9
23 7.34 .94 1.75 2.52 4.00 5.76 7.46 9.12 10.7 13.9 17.0 20.0 26.0 37.4 53.9 59.2 45.1 35.8 29.3 24.6 21.0 18.2
25 7.98 1.03 1.92 2.76 4.38 6.30 8.17 9.98 11.8 15.2 18.6 21.9 28.4 40.9 59.0 64.9 51.1 40.6 33.2 27.8 23.8 20.6
Lubrication # Type I
*See Page 259 for Multiple Strand Rating Factor.
#See Page 259 for Lubrication Details.
Type II Type III Type IV
RATINGS FOR INTERMEDIATE NUMBERS OF TEETH OR RPM MAY BE OBTAINED BY INTERPOLATION.
P-1930-BG 04/10 Boston Gear 800-825-6544 261
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