Rainbow Brushroll Bearing Boot - D4SE / E Series

The Rexair-Rainbow D4SE and E series power nozzle uses a brushroll bearing boot, part R5592, to keep hair, lint and grit out of the bearing while the roll spins.

Once a boot splits, hardens or goes missing, the bearing underneath is exposed to whatever the brush roll picks up. That usually shows up first as a rougher, noisier spin, and a bearing running dirty wears out well ahead of schedule. Replacing the boot when it is worn is cheaper than replacing the bearing it protects.

A boot like this one hardens with age even on a nozzle that has not seen heavy use, so a machine pulled out of storage after a long gap is worth checking here even if the brush roll still spins freely by hand. A boot that has gone stiff will often crack the first time the roll is worked free for service, which is a sign it needed replacing before that point.

• Part: R5592, brushroll bearing boot
• Fits: Rexair-Rainbow D4SE, E series power nozzle
• Function: seals the brush roll bearing against hair, lint and grit
• Replace: whenever the brush roll or bearing is serviced, or sooner if the boot is visibly split

Fit the boot over the bearing during brush roll service, and confirm your power nozzle series matches before ordering.