Modified Stock Gearing - Boston Gear
Modified Stock Gearing - Boston Gear
Modified Stock Gearing - Boston Gear
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No.<br />
of<br />
Teeth<br />
Pitch<br />
Dia.<br />
ORDER BY CATALOG NUMBER OR ITEM CODE<br />
With Keyway Without Keyway<br />
Hub Length and Setscrew* and Setscrew<br />
Bore<br />
Dia. thru<br />
Bore<br />
Catalog Item Catalog Item<br />
Number Code Number Code<br />
TYPE B SINGLE HUB STEEL<br />
5/8 40B16-5/8 15034 40B16 15698<br />
3/4 40B16-3/4 15036<br />
7/8 40B16-7/8 15038<br />
16 2.563 1 2 7/8 40B16-1 15040<br />
1-1/8 40B16-1-1/8 36064<br />
1-3/16 40B16-1-3/16 15042<br />
1-1/4 40B16-1-1/4 15044<br />
5/8 40B17-5/8 15046 40B17 15700<br />
3/4 40B17-3/4 15048<br />
7/8 40B17-7/8 36066<br />
17 2.721 1 2-1/8 1 40B17-1 15050<br />
1-1/8 40B17-1-1/8 15052<br />
1-3/16 40B17-1-3/16 15054<br />
1-1/4 40B17-1-1/4 56733<br />
5/8 40B18-5/8 36068 40B18 15702<br />
3/4 40B18-3/4 15056<br />
7/8 40B18-7/8 15058<br />
1 40B18-1 15060<br />
18 2.879 1-1/8 2-5/16 1 40B18-1-1/8 15062<br />
1-3/16 40B18-1-3/16 15064<br />
1-1/4 40B18-1-1/4 15066<br />
1-3/8 40B18-1-3/8 36070<br />
1-7/16 40B18-1-7/16 15068<br />
1-1/2 40B18-1-1/2 15070<br />
5/8 40B19-5/8 36072 40B19 15704<br />
3/4 40B19-3/4 15072<br />
7/8 40B19-7/8 36074<br />
1 40B19-1 15074<br />
19 3.038 1-1/8 2-1/2 1 40B19-1-1/8 36076<br />
1-3/16 40B19-1-3/16 15076<br />
1-1/4 40B19-1-1/4 36078<br />
1-3/8 40B19-1-3/8 36080<br />
1-7/16 40B19-1-7/16* 15078<br />
1-1/2 40B19-1-1/2* 56734<br />
5/8 40B20-5/8 36082 40B20 15706<br />
3/4 40B20-3/4 15080<br />
7/8 40B20-7/8 15082<br />
1 40B20-1 15084<br />
20 3.196 1-1/8 2-5/8 1 40B20-1-1/8 15086<br />
1-3/16 40B20-1-3/16 15088<br />
1-1/4 40B20-1-1/4 15090<br />
1-3/8 40B20-1-3/8 36084<br />
1-7/16 40B20-1-7/16 15092<br />
1-1/2 40B20-1-1/2 15094<br />
5/8 40B21-5/8 36086 40B21 15708<br />
3/4 40B21-3/4 17148<br />
7/8 40B21-7/8 15096<br />
1 40B21-1 15098<br />
21 3.355 1-1/8 2-3/4 1 40B21-1-1/8 36088<br />
1-3/16 40B21-1-3/16 15100<br />
1-1/4 40B21-1-1/4 36090<br />
1-3/8 40B21-1-3/8 36092<br />
1-7/16 40B21-1-7/16* 15102<br />
1-1/2 40B21-1-1/2* 15104<br />
Roller Chain Sprockets<br />
P.D.<br />
Reference Pages<br />
Single Strand<br />
No. 40 1/2" Pitch; Steel<br />
.284<br />
MAX.<br />
MAXIMUM DIA. OF CHAIN OVER<br />
SPROCKET = SPROCKET P.D. +.469”<br />
STANDARD TOLERANCES<br />
Dimension<br />
Tolerance<br />
Bore All ±.001<br />
Alterations – 316<br />
Horsepower Ratings – 260-262<br />
Lubrication – 259<br />
Materials – 316<br />
Selection Procedure – 258<br />
ANSI Diameters – 317<br />
*All sprockets have standard keyways.<br />
Sprockets 16-17 teeth have 1/4-20<br />
setscrews, 18-21 teeth 5/16-18<br />
setscrews, located over keyway, except<br />
at 90° where marked.<br />
H<br />
P-1930-BG 04/10 <strong>Boston</strong> <strong>Gear</strong> 800-825-6544 275
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