Spur Gears - Norfolk Bearings and Supply Company, Inc.
Spur Gears - Norfolk Bearings and Supply Company, Inc.
Spur Gears - Norfolk Bearings and Supply Company, Inc.
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C<br />
Bevel <strong>Gears</strong><br />
48 through 20 Diametral Pitch (Brass, Stainless Steel & Steel – Hardened & Unhardened)<br />
20° Pressure Angle<br />
REFERENCE PAGES<br />
Alterations — 314<br />
Lubrication — 314<br />
Materials — 315<br />
*Mounting Distance (MD) must not be made less than dimension shown, see Page 308.<br />
†Not “Coniflex” tooth form. Can be furnished with “Coniflex” tooth on special order.<br />
‡These gears have No. 47 (.0785) drilled hole in hub. No keyway or setscrew.<br />
All gears have “Coniflex” ® tooth form, except as noted. All<br />
hardened steel gears have teeth only hardened <strong>and</strong> are<br />
equipped with st<strong>and</strong>ard keyways <strong>and</strong> setscrews, except as<br />
noted.<br />
MOUNTING<br />
DISTANCE<br />
STANDARD TOLERANCES<br />
DIMENSION TOLERANCE<br />
BORE All ±.0005<br />
ALL DIMENSIONS IN INCHES<br />
ORDER BY CATALOG NUMBER OR ITEM CODE<br />
No. of Pitch MD Hub Catalog Item Catalog Item<br />
Ratio Teeth Dia. Face Bore * D Dia. Proj. Number Code Number Code<br />
48 STAINLESS<br />
DIAMETRAL PITCH BRASS STEEL<br />
2:1<br />
36 .750<br />
.12<br />
.1875 .438 .257 .44 .19 G479Y-G † 12136 GSS479Y-G † 18 .375 .125 .594 .335 .28 .19 G479Y-P<br />
49991<br />
† 12134 GSS479Y-P † 49990<br />
3:1<br />
36 .750<br />
.09<br />
.1875 .375 .257 .44 .19 G478Y-G † 12132 GSS478Y-G † 12 .250 .125 .562 .285 .22 .17 G478Y-P<br />
49989<br />
† 12130 GSS478Y-P † 32<br />
49988<br />
DIAMETRAL PITCH<br />
2:1<br />
32 1.000<br />
.14 .1875<br />
.594 .382 .56 .25 G481Y-G † 12120 GSS481Y-G † 16 .500 .719 .365 .38 .17 G481Y-P<br />
49993<br />
† 12118 GSS481Y-P † 49992<br />
4:1<br />
64 2.000<br />
.24<br />
.3125 .688 .445 1.00 .31 G486Y-G † 12108 GSS486Y-G † 16 .500 .1875 1.250 .500 .38 .22 G486Y-P<br />
49995<br />
† 12106 GSS486Y-P † 24<br />
49994<br />
DIAMETRAL PITCH<br />
2:1<br />
36<br />
18<br />
48<br />
24<br />
1.500<br />
.750<br />
2.000<br />
1.000<br />
.24<br />
.26<br />
.250<br />
.1875<br />
.3125<br />
.250<br />
.781<br />
1.062<br />
.938<br />
1.375<br />
.460<br />
.540<br />
.507<br />
.630<br />
.88<br />
.56<br />
1.12<br />
.69<br />
.31<br />
.25<br />
.31<br />
.28<br />
G485Y-G<br />
G485Y-P<br />
G487Y-G<br />
G487Y-P<br />
12124<br />
12122<br />
12112<br />
12110<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
20 STEEL STEEL<br />
DIAMETRAL PITCH UNHARDENED HARDENED<br />
2:1<br />
20<br />
10<br />
20<br />
1.000<br />
.500<br />
1.000<br />
.18<br />
.18<br />
.375<br />
.1875<br />
.375<br />
.688<br />
.750<br />
.688<br />
.460<br />
.425<br />
.460<br />
.75<br />
.41<br />
.75<br />
.31<br />
.25<br />
.31<br />
L147Y-G<br />
L147Y-P<br />
—<br />
12234<br />
12236<br />
—<br />
—<br />
—<br />
HL147Y-G<br />
—<br />
—<br />
‡ 10 .500 .1875 .750 .425 .41 .25 — — HL147Y-P<br />
11854<br />
‡ 11856<br />
74 Boston Gear 800-825-6544 P-1930-BG 04/10<br />
PITCH<br />
DIA.<br />
BORE<br />
SETSCREW<br />
D<br />
HUB<br />
DIA.<br />
PITCH<br />
DIA.<br />
KEYWAY<br />
FACE<br />
D<br />
HUB<br />
PROJ.<br />
MOUNTING<br />
DISTANCE
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