These bearings are commonly used on seed planters. Their hexagonal bores are designed to support various sizes of cold drawn hex shafting. The sprocket end of extended inner transmits rotation of hex shaft to drive chain.

Advantages

Over-size, factory packed lubricant chamber assures maximum life and operating efficiency without troublesome relubrication
Bearing races are hardened to resist wear, outers and inners are accurately formed for smooth running
Aetna's self-contouring, free-running, self-wiping seal provides positive contact under all conditions of misalignment
Full ball complement for high durability

Parameter Name	Parameter Value
Teeth	straight-toothed
Other characteristics	chain with ball bearing shaft