Pulleys
Drive Pulleys by Size Chart
OD
ID
Hub Length
Keyway
Type Steel
Belt
78-690 44-500 78-676 44-306 44-301 78-675 44-310 78-677 78-651 44-351 44-312 44-313 44-348 78-673 44-316 78-678 44-318 78-641 78-650 44-321 44-322 78-644 78-646 44-353 78-010 44-323 44-332 78-643 44-302 44-331 44-341 44-342 44-339 44-368 78-640 78-649 78-642 44-343 44-347 44-340 44-356
1-7/8"
7/8" 3/8" 5/8" 5/8" 3/8" 5/8" 5/8" 3/4" 5/8" 3/4" 7/8" 5/8" 3/4" 5/8" 5/8" 5/8" 1" 1"
7/8"
5/32"
3/8"
2" 2" 2"
1-1/4"
Aluminum
Poly “v”
1" 1" 1"
3/16" 3/16"
Iron
A type
Steel Steel
1/2" 1/2"
2-1/4" 2-1/2" 2-1/2" 2-1/2" 2-3/4"
1/8"
5/8"
3/16" 3/16" 3/16"
Iron
A type
1"
Steel
1/2"
5/8"
Iron Iron
A type A type
1-1/16"
1/4" 1/4"
3" 3" 3" 3"
1" 1" 1" 1" 1" 1"
Steel Steel Steel Steel
1/2" 1/2" 1/2" 1/2"
3/16" 3/16"
1/4"
3-1/4" 3-1/4" 3-7/16" 3-1/2" 3-1/2" 3-1/2"
3/16" 3/16" 3/16"
Iron
A type double v
Steel
1/2"
1-25/32"
Iron
A type double v
1"
Steel
1/2"
1-1/2"
1/8"
Iron Iron
B type B type
1"
1-13/32"
4" 4" 4" 4" 4"
5/8" 3/4"
1" 1"
Steel Steel
1/2" 1/2"
25 mm/ .987"
1-5/32"
Iron Iron
A type B type
1" 1"
1-1/8"
1"
Steel
1/2"
4-3/8" 4-1/2"
5/8" 5/8" 5/8" 5/8"
B type
1" 1"
5/32"
Steel Steel
1/2" 1/2"
5" 5" 5" 5"
1-5/32"
Iron
B type B type
0.640" spline
Steel
5/8" spine
1"
1/2" 1/2"
5-1/4"
0.6
1-1/8"
Steel
5"
9/16" spline 9/16" spline 3/4" spline
5/8"
5-3/8" 5-1/2" 5-3/4" 5-3/4" 5-3/4" 6-1/4" 6-7/8" 7-1/4" 7-1/2"
1/8"
Steel Steel
1/2" 1/2"
2-1/4" 1-1/2"
1" 1"
Iron Iron Iron
B type B type
1"
“H” taper
7/8" 1/8"
A & B type
9/16" spline
Splined
Steel Steel Steel Steel
5/8"
3/4"
1"
A type
0.6
1/8"
1/2" 1/2"
5/8"
1-3/8"
5/32"
P
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