Component: Assembly
Inch - Metric: Inch
Outside Diameter - Inch: 12.875
Outside Diameter - Millimeter: 327.025
Bore - Millimeter: 241.3

Other Features: 2 Single Cone | 1 Double Cup | Unground Cone Spacer | Outer Race with Oil Holes and Groove
Global Part Number GPN: 660439
Assembly Components: 8578 (2) | 8520CD (1) | X1S-8578 (1)
Basic Number: 8578
Precision Class: Standard

Pitch Diameter - Inch: 13.033
Flange Outside Diameter - Millimeter: 349.606
Inch - Metric: Metric
Outside Diameter - Inch: 12.863
Face Width - Millimeter: 181.102

Face Width - Inch: 7.13
Belt Pitch: 20 MM
Other Features: Bushing Sold Separately | Bushing Not Included | HTD Belt Style | QD Bushing | Solid Style
Global Part Number GPN: 577513
Pitch Diameter - Millimeter: 331.038

Pitch Diameter - Inch: 13.033
Flange Outside Diameter - Millimeter: 349.606
Inch - Metric: Metric
Outside Diameter - Inch: 12.863
Face Width - Millimeter: 127

Face Width - Inch: 5
Belt Pitch: 20 MM
Other Features: Bushing Sold Separately | Bushing Not Included | HTD Belt Style | QD Bushing | Web Style
Global Part Number GPN: 577701
Pitch Diameter - Millimeter: 331.038

Bore Profile: Minimum Plain Bore
Component: Hub
Inch - Metric: Inch
Material: Carbon Steel
Outside Diameter - Inch: 12.8

Length Thru Bore - Millimeter: 145.8
Other Features: Components May or May Not Intermix Among Brands
Mounting Method: Set Screw
Hub Diameter - Millimeter: 241.3
Coupling Type: Jaw Coupling

Component: Cup
Width - Millimeter: 63.5
Flange Outside Diameter - Millimeter: 0
Inch - Metric: Inch
Outside Diameter - Inch: 12.875

Flange Outside Diameter - Inch: 0
Outside Diameter - Millimeter: 327.025
Bore - Millimeter: 0
Precision Class: Standard
Basic Number: 470128