Speed Factors (Fs) for Steel Chain
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Number of Teeth on Sprocket FEET PER MINUTE
10 25 50 75 100 125 150 175 200 225 250 275 300 400 500 600 700 800 900 1000
6 .917 1.09 1.34 1.68 2.00 2.40 2.91 3.57 4.41 5.65 7.35 10.6 16.7              
7 .885 .971 1.13 1.27 1.44 1.61 1.81 2.04 2.29 2.60 2.96 3.42 3.95 8.62            
8 .813 .909 1.04 1.16 1.26 1.34 1.49 1.63 1.76 1.93 2.10 2.29 2.48 3.62 6.21          
9 .794 .870 .980 1.07 1.17 1.26 1.36 1.45 1.55 1.65 1.76 1.88 2.00 2.56 2.94 4.29 6.09 9.90    
10 .775 .840 .943 1.02 1.09 1.16 1.24 1.31 1.37 1.45 1.53 1.61 1.68 2.03 2.41 2.81 3.31 3.82 4.48 5.37
11 .758 .820 .901 .971 1.03 1.09 1.15 1.22 1.28 1.34 1.40 1.46 1.52 1.78 2.05 2.33 2.63 2.96 3.37 3.82
12 .741 .787 .862 .926 .990 1.05 1.10 1.16 1.21 1.26 1.32 1.37 1.42 1.63 1.84 2.05 2.26 2.15 2.77 3.05
14 .735 .769 .833 .885 .935 .980 1.02 1.07 1.11 1.15 1.19 1.25 1.28 1.47 1.61 1.78 1.94 2.10 2.29 2.48
16 .725 .763 .813 .855 .893 .935 .971 1.01 1.05 1.08 1.12 1.16 1.19 1.34 1.48 1.63 1.77 1.93 2.09 2.28
18 .719 .752 .800 .833 .877 .909 .943 .980 1.01 1.04 1.08 1.11 1.14 1.27 1.40 1.53 1.67 1.80 1.95 2.11
20 .717 .746 .787 .826 .855 .893 .917 .952 .980 1.01 1.04 1.07 1.10 1.22 1.34 1.45 1.57 1.69 1.82 1.96
24 .714 .735 .769 .800 .820 .847 .877 .901 .935 .962 .980 1.01 1.04 1.15 1.26 1.37 1.48 1.56 1.71 1.84