594
OD: (A)
Flat OD: (B)
Flat Width (C)
Overall Width (D)
Bore: (E)
Offset: (F)
Material
Flat Idler Pulleys – High-Speed Bearing – Heavy-Duty 34-046 3-7/8 3-1/16 3/4 1-3/32
3/8 3/8 3/8 3/8 3/8
1/8 1/8
Steel Steel
78-013 34-041 78-050 78-043 78-112 34-007 78-052 78-021 78-049 34-820 34-822 78-046 78-110 34-201 78-098 78-133 34-109 78-025 78-006 78-022 78-300 78-026 78-023
4
3-1/16 3-1/2 3-1/2 3-3/4 4-1/16
1
1-1/2 1-1/8
4-1/8 4-1/8 4-1/4 4-3/8 4-1/2 4-1/2 4-5/8 4-5/8 4-3/4 4-3/4 4-7/8 4-7/8 4-7/8 4-7/8 5-1/8 5-3/16
7/8 7/8
1/16 3/32
Composite
1-1/16
Steel Steel Steel Steel Steel
1
1-1/4
1/8
3/4 3/4 5/8 3/4 3/4
1 1 1 1
.669*
None
4
3/8 3/8 1/2
3/16
3-5/8
1/4
4 4 4 4
None None
Composite
1-5/16 1-5/16 1-5/16
.669*
Steel
1
3/8 1/2 3/8 3/8 3/8 3/8
1/8
Composite Composite
7/8 3/4 3/4 7/8 3/4
None
4-1/16 4-1/16
1-1/8 1-1/8 1-1/8
3/32 1/16
Steel Steel Steel Steel Steel Steel Steel Steel Steel Steel
4 4
1/8
1-3/16 1-1/2 1-5/8 1-3/8 1-3/8 1-3/8 1-1/2 1-1/2 1-3/8
5/32
4-1/2 4-1/2
1
.669* .669* .669* .669* .669*
None None None None None
1-1/4
5-1/2 5-1/2 5-1/2 5-3/4 5-7/8 6-3/4
5 5 5 5 5 6
1-1/16 1-1/16 1-1/16 1-1/16
3/8
1/4
1-1/4 1-1/8
.669* .669*
None None
Composite
Steel
V-Idler Pulleys – High-Speed Bearing – Heavy-Duty 34-102 2-13/16 N/A N/A 5/8
.669* .669* .625*
None None None
Composite
34-042 34-824 34-049 78-010
3-1/16
N/A N/A N/A N/A
N/A N/A N/A N/A
5/8
Steel
3
11/16 13/16
Composite
3-9/16 4-3/8
3/8 5/8
5/32
Steel Steel
1
None
Drive Pulleys by Size Chart
OD
ID
Hub Length
Keyway
Type
Belt
78-010 44-302 44-339
4-3/8"
5/8"
B type B type
5"
0.640" spline 9/16" spline
Steel Steel
5-3/8"
1/8"
1/2"
2025
TechnicalServices@OregonProducts.com 1.800.223.5168
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