Bearings for non-magnetic requirement are classified into non-magnetic (relative permeability 1.01 or less) bearings and completely non-magnetic (relative permeability 1.001 or less) bearings. Both bearings are harder and more resistant to corrosion than conventional stainless steel or beryllium-copper alloys.

High Corrosion-Resistant, Non-Magnetic Stainless Steel ESA Bearings

Completely Non-Magnetic Titanium Alloy Bearings

All-Ceramic Bearings (Oxide-Based Ceramics)