Good quality kaydon MTO-265 rotary table ring bearing produce technical datas: Material:42CrMo/50Mn/42CrMo4 Structure:four point contact slewing ball bearing Ball material:Gcr15 Do:16.535 di:10.433 H:1.968 Ho/Hi:1.732 G:54Ibs Lo:15.354 no:18 Bo:0.562 Li:11.614 ni:24 Bi:0.562 Moment rating:62,000(ft-Ibs) If you are insterested in MTO-265 slewing ball bearing more details, please contact us freely.