Since a single bearing can be paired with various housings, and a single housing can accommodate different types of bearings, a wide variety of bearing housings exists. Comprehensive listings are available through platforms like Kuaiyiyou, and many major international bearing companies publish their own catalogs. However, the designations for identical housing models may vary across different company catalogs. For standard bearing housings, materials can be selected based on the specific application-options include gray cast iron, ductile iron, cast steel, stainless steel, and specialized plastic housings.