Various materials are available not only for inner and outer rings but also for the other components and parts. SMT can find a perfect solution using such components and parts in the best combination of various materials for each application.


  1. Inner and Outer Rings/SAE 52100 (heat-stabilization available)
    AISI 440C (heat-stabilization available)
    AISI 304, AISI 316L, AISI 630, Titanium, Ceramics
    ※Please contact us for the other special materials for inner and outer rings.
  2. Ball/SAE 52100, AISI 440C, AISI 304, Ceramic, Special coating
  3. Retainer/SPCC, S55C, AISI 304, Special coating, Polyamide resin, Fluorine resin
  4. Shield/SECC, AISI 304
  5. Seal/Nitrile rubber, Acrylic rubber, Fluorine rubber, Fluorine resin

Lubricant/Chemical resistant grease, Heat resistant grease, Food grade grease, Clean room grease, Vacuum environment grease, Other special environment grease