Spur Gears - Norfolk Bearings and Supply Company, Inc.
Spur Gears - Norfolk Bearings and Supply Company, Inc.
Spur Gears - Norfolk Bearings and Supply Company, Inc.
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
TO DETERMINE CHAIN LENGTH IN PITCHES<br />
(Approximately):<br />
Roller Chain Drives<br />
Chain Length in Pitches = ( 2 x CD (inches) ) + ( Teeth in Driver & Driven ) + Constant<br />
Pitch 2<br />
{ }<br />
Add for Ratio up to 4 : 1=12<br />
Constant 4 to 6: 1=4<br />
6 to 8: 1=6<br />
Selection<br />
Pitch Conversion Chart<br />
This chart gives chain length in feet when number of pitches <strong>and</strong> chain pitch (in inches) is known<br />
No. Chain Pitch — <strong>Inc</strong>hes<br />
of 1/4 3/8 1/2 5/8 3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2<br />
Pitches Chain Length — Feet<br />
1 0.02 0.03 0.04 0.05 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20<br />
2 0.04 0.06 0.08 0.10 0.12 0.16 0.20 0.25 0.29 0.33 0.37 0.41<br />
3 0.06 0.09 0.12 0.15 0.18 0.25 0.31 0.37 0.43 0.50 0.56 0.62<br />
4 0.08 0.12 0.16 0.20 0.25 0.33 0.41 0.50 0.58 0.66 0.75 0.83<br />
5 0.10 0.15 0.20 0.26 0.31 0.41 0.52 0.62 0.72 0.83 0.93 1.04<br />
6 0.12 0.18 0.25 0.31 0.37 0.50 0.62 0.75 0.87 1.00 1.12 1.25<br />
7 0.14 0.21 0.29 0.36 0.43 0.58 0.72 0.87 1.02 1.16 1.31 1.45<br />
8 0.16 0.25 0.33 0.41 0.50 0.66 0.83 1.00 1.16 1.33 1.50 1.66<br />
9 0.18 0.28 0.37 0.46 0.56 0.75 0.93 1.12 1.31 1.50 1.68 1.87<br />
10 0.20 0.31 0.41 0.52 0.62 0.83 1.04 1.25 1.45 1.66 1.87 2.08<br />
11 0.22 0.34 0.45 0.57 0.68 0.91 1.14 1.37 1.60 1.83 2.06 2.29<br />
12 0.25 0.37 0.50 0.62 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50<br />
13 0.27 0.40 0.54 0.67 0.81 1.08 1.35 1.62 1.89 2.16 2.43 2.70<br />
14 0.29 0.43 0.58 0.72 0.87 1.16 1.45 1.75 2.04 2.33 2.62 2.91<br />
15 0.31 0.46 0.62 0.78 0.93 1.25 1.56 1.87 2.18 2.50 2.81 3.12<br />
16 0.33 0.50 0.66 0.83 1.00 1.33 1.66 2.00 2.33 2.66 3.00 3.33<br />
17 0.35 0.53 0.70 0.88 1.06 1.41 1.77 2.12 2.47 2.83 3.18 3.54<br />
18 0.37 0.56 0.75 0.93 1.12 1.50 1.87 2.25 2.62 3.00 3.37 3.75<br />
19 0.39 0.59 0.79 0.98 1.18 1.58 1.97 2.37 2.77 3.16 3.56 3.95<br />
20 0.41 0.62 0.83 1.04 1.25 1.66 2.08 2.50 2.91 3.33 3.75 4.16<br />
22 0.45 0.68 0.91 1.14 1.37 1.83 2.29 2.75 3.20 3.66 4.12 4.58<br />
24 0.50 0.75 1.00 1.25 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00<br />
28 0.58 0.87 1.16 1.45 1.75 2.33 2.91 3.50 4.08 4.56 5.25 5.83<br />
30 0.62 0.93 1.25 1.56 1.87 2.50 3.12 3.75 4.37 5.00 5.62 6.25<br />
34 0.70 1.06 1.41 1.77 2.12 2.83 3.54 4.25 4.95 5.66 6.37 7.08<br />
38 0.79 1.18 1.58 1.97 2.37 3.16 3.95 4.75 5.54 6.33 7.12 7.91<br />
40 0.83 1.25 1.66 2.08 2.50 3.33 4.16 5.00 5.83 6.66 7.50 8.33<br />
44 0.91 1.37 1.83 2.29 2.75 3.66 4.58 5.50 6.41 7.33 8.25 9.16<br />
48 1.00 1.50 2.00 2.50 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00<br />
50 1.04 1.56 2.08 2.60 3.12 4.16 5.20 6.25 7.29 8.33 9.37 10.41<br />
54 1.12 1.68 2.25 2.81 3.37 4.50 5.62 6.75 7.87 9.00 10.12 11.25<br />
58 1.20 1.81 2.41 3.02 3.62 4.83 6.04 7.25 8.45 9.66 10.87 12.08<br />
60 1.25 1.87 2.50 3.12 3.75 5.00 6.25 7.50 8.75 10.00 11.25 12.50<br />
65 1.35 2.03 2.70 3.38 4.06 5.41 6.77 8.12 9.47 10.83 12.18 13.54<br />
70 1.45 2.18 2.91 3.64 4.37 5.83 7.29 8.75 10.20 11.66 13.12 14.58<br />
75 1.56 2.34 3.12 3.90 4.68 6.25 7.81 9.37 10.93 12.50 14.06 15.62<br />
80 1.66 2.50 3.33 4.16 5.00 6.66 8.33 10.00 11.66 13.33 15.00 16.66<br />
85 1.77 2.65 3.54 4.42 5.31 7.08 8.85 10.62 12.39 14.16 15.93 17.70<br />
90 1.87 2.81 3.75 4.68 5.62 7.50 9.37 11.25 13.12 15.00 16.87 18.75<br />
95 1.97 2.96 3.95 4.94 5.93 7.91 9.89 11.87 13.85 15.83 17.81 19.79<br />
100 2.08 3.12 4.16 5.20 6.25 8.33 10.41 12.50 14.58 16.66 18.75 20.83<br />
P-1930-BG 04/10 Boston Gear 800-825-6544 265<br />
H