Nice precision ground
ball bearings of standar production are fitted with snap-in ball riding
retaining cages made from heat stabilized polyamide 6/6. For special
applications or design requirements cages made of special materials
can be supplied. These include pressed steel or stainless steel,glass
reinforced polyamide 6/6, and brass. Availability of bearings fitted
with nonstandard cages should be checked before ordering.