Horsepower Ratings ANSI Roller Chain No 80 Table

ANSI Hardware Design Guide and Reference

Horsepower Ratings for ANSI Roller Chains Table For 1 " Pitch Standard Single Strand Roller Chain No. 80

To determine the horsepower requirements for Roller Chains the following must be taken into consideration:

  • Service factors,
  • Lubrication Service Factors,
  • Multiple Strand Factors: For two strands, the multiple strand factor is 1.7; for three strands, it is 2.5; and for four strands, it is 3.3.,
  • Lubrication: Required type of lubrication is indicated at the bottom of each roller chain size section of the table,
  • Type A: Manual or Drip Lubrication, Type B: Bath or Disc Lubrication, Type C: Oil Stream Lubrication.

To find the required horsepower table rating, use the following formula:

HP Required = [ HP to be Transmitted ] x [ Service Factor ] / [ Multiple Strand Factor ]

No. of
Teeth Small
Spocket.
1" Pitch Standard Single Strand Roller Chain No. 80
Revolutions per Minute Small Sprocket
25
50
100
150
200
300
400
500
600
700
800
900
1000
Horsepower Ratings
11
0.97
1.80
3.36
4.84
6.28
9.04
11.7
14.3
16.9
19.4
21.9
23.0
19.6
12
1.06
1.98
3.69
5.32
6.89
9.93
12.9
15.7
18.5
21.3
24.0
26.2
22.3
13
1.16
2.16
4.03
5.80
7.52
10.8
14.0
17.1
20.2
23.2
26.2
29.1
25.2
14
1.25
2.34
4.36
6.29
8.14
11.7
15.2
18.6
21.9
25.1
28.4
31.5
28.2
15
1.35
2.52
4.70
6.77
8.77
12.6
16.4
20.0
23.6
27.1
30.6
34.0
31.2
16
1.45
2.70
5.04
7.26
9.41
13.5
17.6
21.5
25.3
29.0
32.8
36.4
34.4
17
1.55
2.88
5.38
7.75
10.0
14.5
18.7
22.9
27.0
31.0
35.0
38.9
37.7
18
1.64
3.07
5.72
8.25
10.7
15.4
19.9
24.4
28.7
33.0
37.2
41.4
41.1
19
1.74
3.25
6.07
8.74
11.3
16.3
21.1
25.8
30.4
35.0
39.4
43.8
44.5
20
1.84
3.44
6.41
9.24
12.0
17.2
22.3
27.3
32.2
37.0
41.7
46.3
48.1
21
1.94
3.62
6.76
9.74
12.6
18.2
23.5
28.8
33.9
39.0
43.9
48.9
51.7
22
2.04
3.81
7.11
10.2
13.3
19.1
24.8
30.3
35.7
41.0
46.2
51.4
55.5
23
2.14
4.00
7.46
10.7
13.9
20.1
26.0
31.8
37.4
43.0
48.5
53.9
59.3
24
2.24
4.19
7.81
11.3
14.6
21.0
27.2
33.2
39.2
45.0
50.8
56.4
62.0
25
2.34
4.37
8.16
11.8
15.2
21.9
28.4
34.7
40.9
47.0
53.0
59.0
64.8
26
2.45
4.56
8.52
12.3
15.9
22.9
29.7
36.2
42.7
49.1
55.3
61.5
67.6
28
2.65
4.94
9.23
13.3
17.2
24.8
32.1
39.3
46.3
53.2
59.9
66.7
73.3
30
2.85
5.33
9.94
14.3
18.5
26.7
34.6
42.3
49.9
57.3
64.6
71.8
78.9
32
3.06
5.71
10.7
15.3
19.9
28.6
37.1
45.4
53.5
61.4
69.2
77.0
84.6
35
3.37
6.29
11.7
16.9
21.9
31.6
40.9
50.0
58.9
67.6
76.3
84.8
93.3
40
3.89
7.27
13.6
19.5
25.3
36.4
47.2
57.7
68.0
78.1
88.1
99.0
108
45
4.42
8.25
15.4
22.2
28.7
41.4
53.6
65.6
77.2
88.7
100
111
122
Type A
Type B
Type C
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