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System of Measurement
Inch
Metric
Shaft Diameter
1/32"
to
17/32"
1/8"
1/4"
5/16"
3/8"
3/8"
to
7/8"
1/2"
1/2"
to 1"
5/8"
5/8"
to 1
5/16"
11/16"
3/4"
7/8"
1"
1" to 1
13/16"
1
1/8"
1
3/16"
1
1/4"
Roller Chain Trade Number
25
35
40
41
50
60
06B
08B
OD
0.7"
1.06"
1
5/16"
1.7"
2"
2.03"
2.09"
2.13"
2
1/4"
2
11/16"
2.83"
4"
4
1/16"
4
1/4"
5
5/16"
5
3/8"
6
3/4"
8
1/16"
9
7/16"
25 mm
27.2 mm
34 mm
51 mm
54 mm
68 mm
90 mm
103 mm
136 mm
156 mm
Pitch
0.080"
0.1227"
0.2"
1/4"
3/8"
1/2"
5/8"
3/4"
0.875"
2 mm
3 mm
5 mm
8 mm
14 mm
ID
3/8"
1/2"
5/8"
3/4"
7/8"
1"
1
1/8"
1
3/16"
1
1/4"
1
3/8"
1
7/16"
1
1/2"
1.574"
1
5/8"
1
3/4"
1
7/8"
1
15/16"
2.186"
2.732"
2.812"
3.83"
4.44"
14 mm
15 mm
Shaft Type
Keyed
Round
Bore Type
Bushing
Finished
Keyed
Plain
Round
Material
Aluminum
Brass
Iron
Plastic
Stainless Steel
Steel
Chain Type
Roller
Component
Gear
Gear Stock
Hub Diameter
1/2"
5/8"
7/8"
1
1/8"
1.438"
1.439"
1
1/2"
1.7"
1
3/4"
1.87"
2"
2
1/4"
2
5/8"
2
11/16"
2
7/8"
3.063"
3
1/8"
3
3/16"
3
1/4"
3
1/2"
3
9/16"
3
7/8"
4"
14 mm
15.19 mm
15.2 mm
21.62 mm
22 mm
26 mm
28 mm
31.75 mm
37 mm
39.37 mm
40 mm
50 mm
65 mm
66.67 mm
69.85 mm
76 mm
Strand Type
Single
Keyway Width
0.094"
1/8"
0.187"
3/16"
0.188"
1/4"
5/16"
3/8"
1/2"
4 mm
Shaft Mount Type
Press Fit
Set Screw
Overall Width
3/8"
0.437"
0.438"
1/2"
0.563"
5/8"
3/4"
13/16"
0.813"
0.871"
7/8"
1"
1
1/4"
1.313"
1
3/8"
1
1/2"
1
5/8"
1
3/4"
Width
3/8"
0.437"
0.438"
1/2"
0.563"
5/8"
3/4"
13/16"
0.813"
0.871"
7/8"
1"
1
1/4"
1.313"
1
3/8"
1
1/2"
1
5/8"
1
3/4"
For Maximum Belt Width
3/8"
1/2"
3/4"
1"
1
1/2"
2"
4"
3 mm
6 mm
9 mm
12 mm
15 mm
20 mm
22 mm
30 mm
36 mm
Keyway Depth
0.047"
0.063"
3/32"
0.094"
1/8"
5/32"
3/16"
1/4"
1.8 mm
Export Control Classification Number (ECCN)
EAR99
REACH
Compliant
Not Compliant
U.S.–Mexico–Canada Agreement (USMCA) Qualifying
Yes
No
RoHS
Compliant
DFARS Specialty Metals
Exempt
Chain Standard
ANSI
ISO
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393 Products
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Machine your own gears to an exact face width and shaft diameter
1 product
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1 product
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1 product
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The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)