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SPROCKETS
Specification Figure 1   Specification Figure 2
Figure 1 Figure 2
ALL DIMENSIONS ARE IN INCHES

TEETH CATALOG NUMBERS FIG. SPOKES DIMENSIONS
NOMINAL SHAFT HOLE A* +0.000 -0.010 @ 75°F NOMINAL
1/8 3/16 1/4 3/8 E P.D. ROOT C D B** L***
8 S082 ... ... ... 1   0.371 0.318 0.258    
9 S092 ... ... ... 1   0.409 0.356 0.296    
10 S102 S103 ... ... 1   0.456 0.394 0.334    
12 S122 S123 S124 ... 1   0.535 0.471 0.411    
15 S152 S153 S154 ... 1   0.650 0.586 0.526    
16 S162 S163 S164 ... 1   0.690 0.625 0.565    
18 S182 S183 S184 ... 1   0.769 0.702 0.642    
20 S202 S203 S204 S206 1   0.848 0.780 0.720    
24 ... S243 S244 S246 2 6 1.005 0.934 0.874 0.746 0.846
30 ... S303 S304 S306 2 6 1.239 1.167 1.107 0.979 1.079
32 ... S323 S324 S326 2 6 1.318 1.246 1.186 1.058 1.158
36 ... ... S364 S366 2 8 1.470 1.400 1.340 1.212 1.312
40 ... ... S404 S406 2 8 1.628 1.554 1.494 1.366 1.466
48 ... ... S484 S486 2 8 1.939 1.865 1.805 1.667 1.777
* Nominal shaft hole A is for press fit on given size shaft.
** B = A + 0.125 for all except S082 where B = 0.236
*** L = 0.312 for shaft hole sizes 1/8, 3/16, & 1/4 ... L = 0.375 for shaft hole size 3/8




CHAIN
Chain Specification Figure

ALL DIMENSIONS ARE IN INCHES

MOMENTARY
ELASTICITY TABLE
TENSION
(OUNCES)
ELONGATION
(PERCENT)
1 0.10
2 0.16
4 0.26
8 0.40
12 0.53
16 0.66
32 1.10
64 2.00
Catalog Number C1227

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