Modified Stock Gearing - Boston Gear
Modified Stock Gearing - Boston Gear
Modified Stock Gearing - Boston Gear
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Spur <strong>Gear</strong>s<br />
10 and 8 Diametral Pitch (Cast Iron, Steel & Non-Metallic)<br />
14-1/2° Pressure Angle (will not operate with 20° spurs)<br />
A<br />
FACE<br />
PITCH<br />
DIA.<br />
HUB<br />
PROJ.<br />
BORE<br />
KEYWAY<br />
OVERALL<br />
LENGTH<br />
STANDARD TOLERANCES<br />
DIMENSION TOLERANCE<br />
BORE All ±.0005<br />
10 D.P. 8 D.P.<br />
REFERENCE PAGES<br />
Alterations — 314<br />
Horsepower Ratings — 54, 55<br />
Lubrication — 314<br />
Materials — 315<br />
Selection Procedure — 49<br />
HUB<br />
DIA.<br />
* Special Pitch Diameter, used for calculating Center<br />
Distance only, not Ratio.<br />
†All gears have standard keyway, at 90° to setscrew.<br />
See Page 315.<br />
ALL DIMENSIONS IN INCHES<br />
ORDER BY CATALOG NUMBER OR ITEM CODE<br />
Style Without Keyway With Keyway<br />
No. Hub See or Setscrew and Setscrew †<br />
of Pitch Page Catalog Item Catalog Item<br />
Teeth Dia. Bore Dia. Proj. 315 Number Code Number Code<br />
10<br />
Face = 1.000"<br />
Outside Dia. = Pitch Dia. + .200"<br />
DIAMETRAL PITCH<br />
Overall Length = 1.000" + Hub Proj.<br />
CAST IRON<br />
40 4.000 NF40 10320 – –<br />
42 4.200 NF42 10322 – –<br />
45 4.500 B NF45 10324 – –<br />
48 4.800 NF48 10326 – –<br />
50 5.000 NF50 10328 – –<br />
54 5.400 2.12 C NF54 10330 – –<br />
55 5.500 .875 .88 NF55 10332 – –<br />
60 6.000 NF60 10334 – –<br />
64 6.400 NF64 10336 – –<br />
70 7.000 NF70 10338 – –<br />
72 7.200 NF72 10340 – –<br />
80 8.000 NF80 10342 – –<br />
84 8.400 NF84 10344 – –<br />
90 9.000 2.25 D NF90 10346 – –<br />
96 9.600 NF96 10348 – –<br />
100 10.000 2.25 .88 NF100 10350 – –<br />
110 11.000 NF110 10352 – –<br />
120 12.000 NF120 10356 – –<br />
140<br />
144<br />
14.000<br />
14.400<br />
1.00 2.50<br />
1.00<br />
NF140<br />
NF144<br />
10358<br />
10360<br />
–<br />
–<br />
–<br />
–<br />
160 16.000 NF160 10362 – –<br />
180 18.000 2.75 NF180 10364 – –<br />
8<br />
Face = 1.250"<br />
Outside Dia. = Pitch Dia. + .250"<br />
DIAMETRAL PITCH<br />
Overall Length = 1.250" + Hub Proj.<br />
STEEL<br />
11 1.500 * 1.12 NH11B 09806 NH11B-3/4 46093<br />
12 1.500 .750 1.12 .75 NH12B 09808 NH12B-3/4 46094<br />
14 1.750 1.31 NH14B 09810 NH14B-3/4 46095<br />
15 1.875 .875 1.43 .75 NH15B 09812 NH15B-7/8 46096<br />
16 2.000<br />
.875<br />
1.000<br />
1.56 .75<br />
NH16B<br />
–<br />
09814<br />
–<br />
NH16B-7/8<br />
NH16B-1<br />
46097<br />
46098<br />
.875 NH18B 09816 NH18B-7/8 46099<br />
18 2.250 1.000 1.81 .75 – – NH18B-1 46100<br />
1.125 – – NH18B-1-1/8 46101<br />
.875 A NH20B 09818 NH20B-7/8 46102<br />
20 2.500 1.000 2.06 .75 – – NH20B-1 46103<br />
1.125 – – NH20B-1-1/8 46104<br />
.875 NH22B 09820 NH22B-7/8 46105<br />
22 2.750 1.000 2.31 .75 – – NH22B-1 46106<br />
1.125 – – NH22B-1-1/8 46107<br />
24 3.000 2.06 NH24A 10368 – –<br />
28 3.500 .875 2.56 .88 NH28A 10370 – –<br />
30 3.750 2.75 NH30A 10372 – –<br />
32 4.000 1.000 3.00 .88 NH32A 10374 – –<br />
NON-METALLIC<br />
16<br />
18<br />
2.000<br />
2.250<br />
.750<br />
1.62<br />
1.88<br />
.75<br />
QHH16<br />
QHH18<br />
09082<br />
09084<br />
–<br />
–<br />
–<br />
–<br />
20 2.500 2.12 A QHH20 09086 – –<br />
24 3.000 .875 2.62 .75 QHH24 09088 – –<br />
28 3.500 3.12 QHH28 09090 – –<br />
24 <strong>Boston</strong> <strong>Gear</strong> 800-825-6544 P-1930-BG 04/10
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