Using sealed bearings
Using sealed bearings in housings with standard seals is a good solution for highly contaminated environments. The sealed bearing together with the housing seal and grease provide three layers of protection (→ SKF Three-Barrier Solution).
SAF housings for sealed spherical roller bearings are identified by the designation SAF 5(00) W. Complete pillow blocks are identified by the designation SAF B225(00). For additional information, contact the SKF application engineering service.
When using taconite heavy-duty seals, a sealed bearing does not enhance the sealing effect during operation, but still protects the bearing against contaminants during mounting.