AIGI Environmental Inc.
AIGI 322S Split Bearing Protector
The AIGI 322S is a patented split, non-contact bearing protector for high-speed machinery. Because it comes apart, it installs around the shaft without dismantling the equipment, while its brass and elastomer construction keeps water and dust out of the bearing housing.
Product Benefits
- In-place installation: The split construction lets maintenance crews fit or replace the protector in place, avoiding the teardown a solid seal would demand.
- Full 322 family protection: It retains the virtues of the 322 family: a waterproof, dustproof substitute for traditional labyrinth seals that causes no shaft damage.
- Extended bearing life: Like its siblings, it dramatically extends bearing life.
- Highest speed rating: Its speed rating is the highest in the range, making it the pick for genuinely fast-running shafts.
Where It's Used
- High-speed equipment: The 322S targets high-speed rotating equipment where downtime for seal replacement is costly.
- Replaces labyrinth seals: It takes the place of labyrinth seals on the bearing housings of such machinery.
- Protects oil-lubricated bearings: It shields oil-lubricated bearings from washdown water and airborne contamination.
Good to Know
- Forgiving of movement: The design tolerates a small amount of axial shaft movement and runout, which gives useful forgiveness on real-world machines.
- Two elastomer choices: NBR covers general duty and FKM serves considerably hotter service.
- Stated exclusions: The 322S is not suitable for vertical equipment or for grease-lubricated bearings. For those cases, other members of the AIGI range are the better fit.






