2025 Oregon Catalog

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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