Modified Stock Gearing - Boston Gear
Modified Stock Gearing - Boston Gear
Modified Stock Gearing - Boston Gear
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Roller Chain Sprockets<br />
Single Strand<br />
No. 50 5/8" Pitch; Steel<br />
H<br />
P.D.<br />
Reference Pages<br />
.343<br />
MAX.<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 keyway. All<br />
sprockets have 5/16–18 setscrews located<br />
over keyway except at 90° where marked.<br />
ORDER BY CATALOG NUMBER OR ITEM CODE<br />
No.<br />
Length<br />
With Keyway Without Keyway<br />
Pitch<br />
Hub<br />
& Setscrew* or Setscrew<br />
of<br />
Bore<br />
thru<br />
Teeth<br />
Dia.<br />
Dia.<br />
Bore<br />
Catalog Item Catalog Item<br />
Number Code Number Code<br />
TYPE B SINGLE HUB STEEL<br />
32 6.376 3/4 3-1/4 1-1/4 — — 50B32 16490<br />
— — — — —<br />
3/4 50B35-3/4 36748 50B35 36744<br />
35 6.972 1 3-1/4 1-1/4 50B35-1 36750<br />
1-1/4 50B35-1-1/4 36752<br />
1-7/16 50B35-1-7/16 36754<br />
1-1/2 50B35-1-1/2 36756<br />
36 7.171 3/4 3-1/4 1-1/4 — — 50B36 16490<br />
3/4 50B40-3/4 36808 50B40 16494<br />
1 50B40-1 36810<br />
40 7.966 1-1/4 3-1/4 1-1/4 50B40-1-1/4 36812<br />
1-7/16 50B40-1-7/16 36814<br />
1-1/2 50B40-1-1/2 36816<br />
1-15/16 50B40-1-15/16* 36818<br />
42 8.363 3/4 3-1/4 1-1/4 — — 50B42 16496<br />
3/4 50B45-3/4 36876 50B45 16498<br />
1 50B45-1 36878<br />
45 8.960 1-1/4 3-3/4 1-1/4 50B45-1-1/4 36880<br />
1-7/16 50B45-1-7/16 36882<br />
1-1/2 50B45-1-1/2 36884<br />
1-15/16 50B45-1-15/16* 36886<br />
1 50B48-1 36892 50B48 16500<br />
48 9.556 1-1/4 3-3/4 1-1/4 50B48-1-1/4 36894<br />
1-7/16 50B48-1-7/16 36896<br />
1-1/2 50B48-1-1/2 36898<br />
1-15/16 50B48-1-15/16* 35942<br />
54 10.749 1 3-3/4 1-1/4 — — 50B54 16502<br />
1 50B60-1 35920 50B60 16504<br />
1-1/4<br />
50B60-1-1/4 35922<br />
60 11.942 1-7/16 3-3/4 1-1/4 50B60-1-7/16 35924<br />
1-1/2 50B60-1-1/2 35926<br />
1-15/16 50B60-1-15/16* 35928<br />
72 14.328 1 3-3/4 1-3/4 — — 50B72 16508<br />
84 16.715 1 4-1/4 1-3/4 — — 50B84 16512<br />
96 19.102 1 4-1/4 1-3/4 — — 50B96 16514<br />
112 21.885 1 4-1/4 1-3/4 — — 50B112 16516<br />
Double Strand<br />
No. 50-2 5/8" Pitch; Steel<br />
P.D.<br />
1.045<br />
.500<br />
No.<br />
of<br />
Teeth<br />
ORDER BY CATALOG NUMBER OR ITEM CODE<br />
With Keyway<br />
Length<br />
Pitch<br />
Hub<br />
& Setscrew*<br />
Bore<br />
thru<br />
Dia.<br />
Dia.<br />
Bore<br />
Catalog Item<br />
Number Code<br />
TYPE B SINGLE HUB STEEL<br />
15 3.006 2-5/16 D50B15 15970<br />
16 3.204 3/4 2-1/2 1-3/4 D50B16 15972<br />
17 3.401 2-11/16 D50B17 15974<br />
18 3.599 2-15/16 D50B18 15976<br />
20 3/995<br />
1<br />
3-1/4<br />
1-3/4<br />
D50B20 15980<br />
21 4.193 3-1/2 D50B21 15982<br />
22 4.392 3-9/16 D50B22 15984<br />
24 4.788 1 3-5/8 1-7/8 D50B24 15988<br />
25 4.987 3-5/8 D50B25 15990<br />
30 5.979 3-3/4 D50B30 68166<br />
40 7.966 1-3/16 4 2-1/8 D50B40 68173<br />
.332<br />
MAX<br />
STANDARD TOLERANCES<br />
Dimension<br />
Tolerance<br />
Bore All ±.001<br />
MAXIMUM DIA. OF CHAIN OVER<br />
SPROCKET = SPROCKET P.D. + .594”<br />
282 <strong>Boston</strong> <strong>Gear</strong> 800-825-6544 P-1930-BG 04/10
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