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 41B16-5/8 15552 41B16 15778<br />
16 2.563 3/4 2-1/16 7/8 41B16-3/4 15554<br />
1 41B16-1 15556<br />
5/8 41B17-5/8 15558 41B17 15780<br />
17 2.721 3/4 2-15/64 1 41B17-3/4 15560<br />
1 41B17-1 15562<br />
5/8 41B18-5/8 15564 41B18 15782<br />
18 2.879 3/4 2-3/8 1 41B18-3/4 15566<br />
1 41B18-1 15568<br />
5/8 41B19-5/8 35956 41B19 15784<br />
19 3.038 3/4 2-15/32 1 41B19-3/4 15570<br />
1 41B19-1 15572<br />
5/8 41B20-5/8 35958 41B20 15786<br />
20 3.196 3/4 2-3/4 1 41B20-3/4 15574<br />
1 41B20-1 15576<br />
5/8 41B21-5/8 35960 41B21 15788<br />
21 3.355 3/4 2-7/8 1 41B21-3/4 15578<br />
1 41B21-1 15580<br />
5/8 41B22-5/8 35962 41B22 15790<br />
22 3.513 3/4 3 1 41B22-3/4 15582<br />
1 41B22-1 15584<br />
5/8 41B23-5/8 35964 41B23 15792<br />
23 3.672 3/4 3-3/16 1 41B23-3/4 15586<br />
1 41B23-1 15588<br />
5/8 41B24-5/8 35966 41B24 15794<br />
24 3.831 3/4 3-1/4 1 41B24-3/4 15590<br />
1 41B24-1 15592<br />
5/8 41B25-5/8 35968 41B25 15796<br />
25 3.989 3/4 3-1/4 1 41B25-3/4 15594<br />
1 41B25-1 15596<br />
5/8 41B26-5/8 68281 41B26 67920<br />
26 4.148 3/4 3-1/4 1 41B26-3/4 68282<br />
1 41B26-1 68283<br />
5/8 41B27-5/8 68284 41B27 67930<br />
27 4.307 3/4 3-1/4 1 41B27-3/4 68285<br />
1 41B27-1 68286<br />
5/8 41B28-5/8 68287 41B28 67931<br />
28 4.466 3/4 3-1/4 1 41B28-3/4 68288<br />
1 41B28-1 68289<br />
5/8 41B30-5/8 68290 41B30 16464<br />
30 4.783 3/4 3-1/4 1 41B30-3/4 68291<br />
1 41B30-1 68292<br />
32 5.101 5/8 3-1/4 1 — — 41B32 16466<br />
36 5.737 5/8 3-1/4 1 — — 41B36 16468<br />
40 6.373 3/4 3-1/4 1-1/16 — — 41B40 16470<br />
45 7.168 3/4 3-1/2 1-1/16 — — 41B45 16472<br />
48 7.645 3/4 3-1/2 1-1/16 — — 41B48 16474<br />
54 8.599 3/4 3-1/2 1-1/16 — — 41B54 16476<br />
60 9.554 3/4 3-1/2 1-1/16 — — 41B60 16478<br />
72 11.463 3/4 4 1-3/16 — — 41B72 16482<br />
96 15.282 1 4 1-3/16 — — 41B96 16486<br />
Roller Chain Sprockets<br />
P.D.<br />
Single Strand<br />
No. 41 1/2" Pitch; Steel<br />
.227<br />
MAX.<br />
MAXIMUM DIA. OF CHAIN OVER<br />
SPROCKET = SPROCKET P.D. +.391”<br />
STANDARD TOLERANCES<br />
Dimension<br />
Tolerance<br />
Bore All ±.001<br />
Reference Pages<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. All<br />
sprockets have 1/4-20 setscrews located<br />
over keyway.<br />
H<br />
P-1930-BG 04/10 <strong>Boston</strong> <strong>Gear</strong> 800-825-6544 273
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