... WZA adopt BAINITE QUENCHING and MARTENSITIC QUENCHING, WZA spherical roller bearings have been heat treated such, so they can be used ... temperature of 200 °C. However, if the self-aligning roller bearings are provided with a polyamide cage, the temperature limit of ... taken into account. The standard versions of WZA spherical roller bearings are supplied with brass cage type MB, CA, and steel ...