Design attributes:
* Double cup and two single cones
* Internal bearing clearance controlled by extending the front faces of the cones so they contact each other
* SW variation features chamfers in the bores at the front faces of the two single cones to form a lubrication groove
* SE variation features a backface rib design to accommodate radial lip seals or stamped closure
Potential applications: sheaves, crane sheaves, oil-field drilling rig sheaves and applications where two-row preset bearings are required