Brochure
102
®
FHPGripbeltHorsepowerTables
HowtoUseTheseTables
The basic horsepower rating for a "4L" belt on a drive in which the small sheave is 5.0 P.D. at 1720 rpm is 1.61 Horsepower. This value must
be corrected by the correction Factor for Loss in Arc of Contact from Table No. 3, page 89. For instance, if the other sheave in the drive is
11.0 P.D. and the center distance is 15.0", the loss in Arc of Contact is (11.0 - 5.0) 57 or 22.8°.
15.0
The correction factor is .94, therefore the corrected horsepower is 1.61 × .94 = 1.51 per belt.
FHP
Table No.1 "3L" and "4L" FHP Belts
rpm
Smaller
Sheave
“3L” Sheave Pitch Diameters “4L” Sheave Pitch Diameters
1.25” 1.5” 1.75” 2.0” 2.5” 3.0” 3.5 4.0” 4.5” 5.0” 1.25” 1.5” 2.0” 2.5” 3.0” 3.5” 4.0” 4.5” 5.0” 5.5” 6.0”
860 .06 .10 .14 .17 .25 .32 .36 .40 .43 .48 .06 .09 .19 .34 .50 .66 .81 .89 .97 1.04 1.11
1140 .07 .12 .16 .21 .30 .40 .45 .50 .54 .59 .07 .11 .22 .43 .65 .85 1.01 1.11 1.20 1.20 1.37
1720 .09 .15 .23 .29 .43 .55 .61 .67 .73 .78 .09 .14 .29 .60 .88 1.17 1.37 1.49 1.61 1.70 1.78
3450 .12 .22 .35 .47 .69 .86 .91 .92 .90 .84 .07 .14 .35 .86 1.32 1.73 1.98 1.99 1.93 1.79 -
200 - - - - - - - - - .15 - - - - - - - - .28 .30 .34
400 - - - - - - .19 .22 .25 .26 - - .13 .18 .26 .32 .43 .49 .51 .55 .60
600 - .09 .11 .13 .18 .25 .27 .30 .33 .36 .06 .08 .16 .25 .38 .48 .60 .67 .72 .78 .84
800 .06 .10 .13 .16 .23 .30 .34 .38 .41 .45 .06 .09 .18 .32 .48 .62 .76 .84 .91 .98 1.05
1000 .07 .11 .15 .19 .28 .35 .41 .45 .49 .53 .07 .10 .20 .39 .58 .76 .91 1.00 1.09 1.16 1.24
1200 .07 .12 .17 .22 .31 .41 .47 .52 .56 .61 .07 .11 .23 .45 .68 .88 1.05 1.15 1.24 1.33 1.42
1400 .08 .13 .19 .25 .36 .47 .52 .58 .64 .68 .08 .12 .25 .51 .76 1.00 1.18 1.29 1.39 1.48 1.58
1600 .08 .14 .21 .28 .40 .52 .58 .65 .70 .75 .08 .13 .28 .57 .84 1.10 1.31 1.42 1.53 1.63 1.72
1800 .09 .15 .24 .30 .44 .56 .64 .69 .75 .80 .09 .14 .29 .61 .91 1.20 1.42 1.54 1.65 1.75 1.82
2000 .10 .16 .25 .33 .47 .61 .68 .75 .80 .84 .10 .15 .30 .66 .98 1.30 1.53 1.65 1.76 1.83 1.91
2200 .10 .17 .26 .35 .51 .66 .73 .79 .84 .88 .10 .16 .32 .70 1.04 1.38 1.63 1.75 1.83 1.91 1.97
2400 .10 .18 .28 .37 .54 .70 .77 .83 .87 .90 .10 .16 .33 .74 1.10 1.46 1.72 1.82 1.91 1.97 2.00
2600 .11 .19 .30 .39 .58 .73 .81 .86 .90 .92 .09 .17 .34 .77 1.15 1.52 1.79 1.89 1.96 1.99 1.99
2800 .
11 .20 .32 .41 .61 .77 .84 .88 .91 .92 .09 .16 .34 .80 1.20 1.59 1.85 1.94 1.99 2.00 1.95
3000 .12 .20 .33 .43 .63 .80 .87 .90 .92 .92 .08 .16 .35 .82 1.25 1.64 1.91 1.97 2.00 1.97 1.89
3500 .12 .22 .35 .47 .70 .87 .91 .92 .90 .82 .07 .14 .35 .86 1.33 1.74 1.99 1.99 1.91 1.78 -
4000 .13 .23 .37 .50 .74 .90 .92 .89 .79 - .04 .12 .33 .88 1.37 1.79 1.98 1.89 - - -
4500 .14 .23 .38 .53 .77 .92 .90 .79 - - .01 .10 .30 .88 1.37 1.76 1.88 - - - -
5000 .13 .23 .39 .54 .79 .92 .82 - - - - .06 .25 .85 1.32 1.66 - - - - -
5500 .13 .22 .39 .54 .78 .88 .72 - - - - .01 .19 .79 1.22 1.51 - - - - -
6000 .12 .22 .38 .54 .77 .79 - - - - - .11 .70 1.07 - - - - - -
6500 .11 .20 .37 .52 .72 .72 - - - - - - .01 .56 .92 - - - - - -
7000 .09 .19 .36 .49 .64 - - - - - - - - .39 - - - - - - -
7500 .06 .16 .33 .45 .54 - - - - - - - - .20 - - - - - - -
8000 .04 .12 .29 .40 - - - - - - - - - - - - - - - - -
8500 .01 .08 .24 .33 - - - - - - - - - - - - - - - - -
9000 - .01 .18 .23 - - - - - - - - - - - - - - - - -
Table No. 2 "5L" FHP Belts
rpm
Smaller
Sheave
Sheave Pitch Diameters
2.2 2.5 3.0 3.4 3.9 4.4 4.9 5.4 5.9 6.4 6.9 7.4
860 2.4 .31 .44 .68 .91 1.19 1.38 1.50 1.61 1.71 1.80 1.89
1140 .30 .37 .56 .84 1.14 1.48 1.72 1.85 1.96 2.07 2.17 2.27
1720 .36 .45 .71 1.07 1.52 1.95 2.26 2.39 2.50 2.59 2.68 2.71
3450 .28 .35 .67 1.21 1.84 2.36 2.56 2.30 - - - -
200 - - - - - - - - .44 .51 .56 .60
400 .13 .16 .26 .43 .48 .59 .73 .80 .85 .91 .98 1.04
600 .19 .23 .34 .51 .68 .87 1.03 1.12 1.21 1.28 1.36 1.44
800 .23 .29 .42 .64 .86 1.12 1.31 1.41 1.52 1.62 1.72 1.80
1000 .27 .34 .50 .92 1.04 1.34 1.56 1.69 1.80 1.90 2.00 2.09
1200 .31 .38 .58 .92 1.19 1.53 1.79 1.91 2.03 2.14 2.24 2.33
1400 .33 .41 .64 .96 1.33 1.71 1.99 2.12 2.23 2.34 2.44 2.53
1600 .35 .42 .69 1.03 1.45 1.86 2.17 2.29 2.41 2.51 2.60 2.66
1800 .36 .46 .72 1.10 1.56 2.01 2.32 2.44 2.55 2.64 2.69 2.73
2000 .38 .47 .76 1.15 1.65 2.12 2.45 2.57 2.66 2.71 2.73 2.71
2200 .38 .47 .77 1.19 1.72 2.23 2.57 2.66 2.72 2.73 2.69 2.65
2400 .37 .47 .78 1.22 1.78 2.31 2.65 2.72 2.73 2.69 2.55 2.45
2600 .37 .46 .78 1.25 1.83 2.37 2.71 2.73 2.69 2.55 2.42 2.22
2800 .36 .44 .77 1.26 1.86 2.41 2.73 2.70 2.60 2.42 2.22
3000 .38 .42 .75 1.25 1.88 2.42 2.71 2.63 2.46 2.22
3500 .27 .34 .66 1.21 1.82 2.34 2.53 2.26 - - - -
4000 .18 .22 .52 1.08 1.64 2.08 2.22 - - - - -
4500 .04 .07 .32 .84 1.32 - - - - - - -
5000 .07 .48 .96 - - - - - - -
Ratings are not shown for belt speeds in excess of 5000 feet per minute. Drives requiring higher belt speeds should be referred
to Application Engineering.