Self-aligning double row ball bearing inserts
Double-row ball bearings have the advantage that they are very light and adjustable.
The difference between the ball bearings and the spherical roller bearings in the Extreme Bearing is that the ball bearings are sealed by 2-rs bearing seals while the spherical roller bearings are not. These seals will give extra protection in case the housing’s seals become broken or breached.
2-rs bearing seals
very light and adjustable