Height - Millimeter: 127
Thrust Bearing: Yes
Bore 1 - Inch: 18
Bore 2 - Millimeter: 460.375
Height - Inch: 5

Inch - Metric: Inch
Outside Diameter - Inch: 28
Cage Material: Steel
Other Features: Single Row | Bore 2 dimension may vary between manufacturers
Self Aligning: No

Height - Millimeter: 139.7
Thrust Bearing: Yes
Bore 1 - Inch: 18
Bore 2 - Millimeter: 460.375
Height - Inch: 5.5

Inch - Metric: Inch
Outside Diameter - Inch: 30
Cage Material: Brass
Other Features: Single Row | Machined Window
Self Aligning: No