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SPUR GEARS
pitch
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[6] [8] [10] [12]
[16] [20] [24] [32] [48] 		CMT® part numbers
custom products

Spur Gears
6 Pitch
1 1/2" Face Width
20° Pressure Angle
Pin Hub
* Recommended maximum bore with keyway and set screw.
NOTE: ALL DIMENSIONS IN INCHES

# Teeth DIAMETER BORE HUB
Pitch Outside Stock Max* Diam Proj
27 4.500 4.833 1 1/8 1 7/16 2 1/2 1
30 5.000 5.333 1 1/8 1 7/16 2 1/2 1
32 5.333 5.666 1 1/8 1 7/16 2 1/2 1
33 5.500 5.833 1 1/8 1 7/16 2 1/2 1
36 6.000 6.333 1 1/8 1 7/16 2 1/2 1
39 6.500 6.833 1 1/8 1 11/16 2 3/4 1
40 6.666 7.000 1 1/8 1 13/16 3 1
42 7.000 7.333 1 1/8 1 13/16 3 1

Spur Gears
8 Pitch
1 1/4" Face Width
20° Pressure Angle
Pin Hub
* Recommended maximum bore with keyway and set screw.
NOTE: ALL DIMENSIONS IN INCHES

# Teeth DIAMETER BORE HUB
Pitch Outside Stock Max* Diam Proj
32 4.000 4.250 1      
36 4.500 4.750 1      
40 5.000 5.250 1      
42 5.250 5.500 1      
44 5.500 5.750 1      
48 6.000 6.250 1      
52 6.500 6.750 1      
54 6.750 7.000 1      

Spur Gears
10 Pitch
1" Face Width
20° Pressure Angle
Pin Hub
* Recommended maximum bore with keyway and set screw.
NOTE: ALL DIMENSIONS IN INCHES

# Teeth DIAMETER BORE HUB
Pitch Outside Stock Max* Diam Proj
32 3.200 3.400 3/4      
35 3.500 3.700 3/4      
36 3.600 3.800 3/4      
40 4.000 4.200 7/8      
42 4.200 4.000 7/8      
45 4.500 4.700 7/8      
48 4.800 5.000 7/8      
50 5.000 5.200 7/8      
54 5.400 5.600 7/8      
55 5.500 5.700 7/8      

Spur Gears
12 Pitch
3/4" Face Width
20° Pressure Angle
Pin Hub
* Recommended maximum bore with keyway and set screw.
NOTE: ALL DIMENSIONS IN INCHES

# Teeth DIAMETER BORE HUB
Pitch Outside Stock Max* Diam Proj
36 3.000 3.166 5/8      
40 3.333 3.500 5/8      
42 3.500 3.666 5/8      
48 4.000 4.166 3/4      
54 4.500 4.666 3/4      
60 5.000 5.166 3/4      

Spur Gears
16 Pitch
1/2" Face Width
20° Pressure Angle
Pin Hub
* Recommended maximum bore with keyway and set screw.
NOTE: ALL DIMENSIONS IN INCHES

# Teeth DIAMETER BORE HUB
Pitch Outside Stock Max* Diameter Proj
40 2.500 2.625 1/2      
48 3.000 3.125 1/2      
54 3.375 3.500 1/2      
56 3.500 3.625 1/2      
60 3.750 3.875 1/2      
64 4.000 4.125 5/8      
72 4.500 4.625 5/8      
80 5.000 5.125 5/8      
84 5.250 5.625 5/8      
88 5.500 5.625 5/8      

Spur Gears
20 Pitch
3/8" Face Width
20° Pressure Angle
Pin Hub - 3/8" Bore
* Recommended maximum bore with keyway and set screw.
NOTE: ALL DIMENSIONS IN INCHES

# Teeth DIAMETER BORE HUB
Pitch Outside Stock Max* Diameter Proj
18 .900 1.000        
20 1.000 1.100        
24 1.200 1.300        
28 1.400 1.500        
30 1.500 1.600        
36 1.800 1.900        
40 2.000 2.100        
48 2.400 2.500        
56 2.800 2.900        
60 3.000 3.100        
72 3.600 3.700        
80 4.000 4.100        
84 4.200 4.300        
96 4.800 4.900        
100 5.000 5.100        

Spur Gears
24 Pitch
3/16" Face Width
20° Pressure Angle
Pin Hub - 3/16", 1/4" Bores
* Recommended maximum bore with keyway and set screw.
NOTE: ALL DIMENSIONS IN INCHES

# Teeth DIAMETER BORE HUB
Pitch Outside Stock Max* Diam Proj
12 .5000 .583        
13 .5418 .625        
14 .5833 .667        
15 .6250 .708        
16 .6667 .750        
18 .7500 .833        
20 .8333 .917        
22 .9167 1.000        
24 1.0000 1.083        
30 1.2500 1.333        
36 1.5000 1.583        
42 1.7500 1.833        
48 2.0000 2.083        
54 2.2500 2.333        
60 2.5000 2.583        
66 2.7500 2.833        
72 3.0000 3.083        
84 3.5000 3.583        
90 3.7500 3.833        
96 4.0000 4.083        

Spur Gears
24 Pitch
3/8" Face Width
20° Pressure Angle
Pin Hub - 3/8" Bore
* Recommended maximum bore with keyway and set screw.
NOTE: ALL DIMENSIONS IN INCHES

# Teeth DIAMETER BORE HUB
Pitch Outside Stock Max* Diameter Proj
24 1.0000 1.083        
28 1.1667 1.250        
30 1.2500 1.333        
36 1.5000 1.583        
40 1.6667 1.750        
48 2.0000 2.083        
56 2.3333 2.417        
60 2.5000 2.583        
72 3.0000 3.083        
80 3.3333 3.417        
96 4.0000 4.083        
112 4.6667 4.750        
120 5.0000 5.083        

Spur Gears
32 Pitch
3/16" Face Width
20° Pressure Angle
Pin Hub - 3/16", 1/4" Bores
* Recommended maximum bore with keyway and set screw.
NOTE: ALL DIMENSIONS IN INCHES

# Teeth DIAMETER BORE HUB
Pitch Outside Stock Max* Diam Proj
15 .4688 .531        
16 .5000 .563        
17 .5313 .594        
18 .5625 .625        
20 .6250 .688        
22 .6875 .750        
24 .7500 .813        
26 .8125 .875        
28 .8750 .938        
30 .9375 1.000        
32 1.0000 1.063        
34 1.0625 1.125        
36 1.1250 1.188        
38 1.1875 1.250        
40 1.2500 1.313        
44 1.3750 1.438        
48 1.5000 1.563        
52 1.6250 1.688        
56 1.7500 1.813        
60 1.8750 1.938        
64 2.0000 2.063        
68 2.1250 2.188        
72 2.2500 2.313        
80 2.5000 2.563        
84 2.6250 2.688        
88 2.7500 2.813        
92 2.8750 2.938        
96 3.0000 3.063        
100 3.1250 3.188        
104 3.2500 3.313        
108 3.3750 3.438        
112 3.5000 3.563        
116 3.6250 3.688        
 120 3.7500 3.813        

Spur Gears
32 Pitch
3/8" Face Width
20° Pressure Angle
Pin Hub - 3/8" Bore
* Recommended maximum bore with keyway and set screw.
NOTE: ALL DIMENSIONS IN INCHES

# Teeth      Pitch Diameter       Outside Diameter
  28              .8750                  .938
  30              .9375                 1.000
  32             1.0000                 1.063
  36             1.1250                 1.188
  40             1.2500                 1.313
  48             1.5000                 1.563
  56             1.7500                 1.813
  60             1.8750                 1.938
  64             2.0000                 2.063
  72             2.2500                 2.313
  80             2.5000                 2.563
  96             3.0000                 3.063
 112             3.5000                 3.563
 128             4.0000                 4.063
 144             4.5000                 4.563
 160             5.0000                 5.063

Spur Gears
48 Pitch
1/8" Face Width
20° Pressure Angle
Pin Hub - 1/8", 3/16", 1/4" Bores
* Recommended maximum bore with keyway and set screw.
NOTE: ALL DIMENSIONS IN INCHES

# Teeth      Pitch Diameter       Outside Diameter
  18              .3750                  .417
  19              .3958                  .438
  20              .4166                  .458
  21              .4375                  .479
  22              .4583                  .500
  23              .4791                  .521
  24              .5000                  .542
  25              .5208                  .563
  26              .5416                  .583
  28              .5833                  .625
  30              .6250                  .667
  32              .6666                  .708
  34              .7083                  .750
  36              .7500                  .792
  38              .7916                  .833
  40              .8333                  .875
  42              .8750                  .917
  44              .9166                  .958
  46              .9583                 1.000
  48             1.0000                 1.042
  50             1.0416                 1.083
  56             1.1666                 1.208
  60             1.2500                 1.292
  64             1.3333                 1.375
  70             1.4583                 1.500
  72             1.5000                 1.542
  80             1.6666                 1.708
  84             1.7500                 1.792
  90             1.8750                 1.917
  92             1.9166                 1.958
  96             2.0000                 2.042
 100             2.0833                 2.125
 102             2.1250                 2.167
 108             2.2500                 2.292
 110             2.2917                 2.333
 115             2.3958                 2.438
 120             2.5000                 2.542
 132             2.7500                 2.792
 138             2.8750                 2.917
 144             3.0000                 3.042
 150             3.1250                 3.167
 156             3.2500                 3.292
 162             3.3750                 3.417
 168             3.5000                 3.542
 174             3.6250                 3.667
 180             3.7500                 3.792
 186             3.8750                 3.917
 192             4.0000                 4.042
 198             4.1250                 4.167

Spur Gears
48 Pitch
3/16" Face Width
20° Pressure Angle
Pin Hub - 3/16", 1/4" Bores
* Recommended maximum bore with keyway and set screw.
NOTE: ALL DIMENSIONS IN INCHES

# Teeth      Pitch Diameter       Outside Diameter
  21              .4375                  .479
  22              .4583                  .500
  23              .4791                  .521
  24              .5000                  .542
  25              .5208                  .563
  26              .5416                  .583
  28              .5833                  .625
  30              .6250                  .667
  32              .6666                  .708
  34              .7083                  .750
  36              .7500                  .792
  38              .7916                  .833
  40              .8333                  .875
  42              .8750                  .917
  44              .9166                  .958
  46              .9583                 1.000
  48             1.0000                 1.042
  50             1.0416                 1.083
  56             1.1666                 1.208
  60             1.2500                 1.292
  64             1.3333                 1.375
  70             1.4583                 1.500
  72             1.5000                 1.542
  80             1.6666                 1.708
  84             1.7500                 1.792
  90             1.8750                 1.917
  92             1.9166                 1.958
  96             2.0000                 2.042
 100             2.0833                 2.125
 102             2.1250                 2.167
 108             2.2500                 2.292
 110             2.2917                 2.333
 115             2.3958                 2.438
 120             2.5000                 2.542
 132             2.7500                 2.792
 138             2.8750                 2.917
 144             3.0000                 3.042
 150             3.1250                 3.167
 156             3.2500                 3.292
 162             3.3750                 3.417
 168             3.5000                 3.542
 174             3.6250                 3.667
 180             3.7500                 3.792
 186             3.8750                 3.917
 192             4.0000                 4.042
 198             4.1250                 4.167

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