9-9 Inner ring rotate V=1,xp=270, a=0.5>e F First we find the bearing in 9-8 We calculate approximately first 270 C10=8× =51.8kW 11.438 0.02+4.439 In 0.9 TRIAL #1 Deep Groove 02-65mm C'10=55.9kN,Co=34kN Fe=10.2 kN C10=66.0kN TRIAL #2 02-75mmC'1o=66.3kN,Co=40.5kN ，。。， Fe=10.48kN C10=67.85kN TRIAL #3 02-80mmC'1o=70.2kN,C0=45kN Fe=10.6kN C10=68.51kN C'10>C10 Choose 02-80mm Deep Groove TRIAL #I Angular Contact 02-70mmC'1o=68.9kN,Co=45.5kN …… Fe=10.62kN C10=68.64kN C'10>C10 Choose 02-70mm Angular Contact9-9 Inner ring rotate V=1, xD=270, e F F ra  0.5  First we find the bearing in 9-8 We calculate approximately first 1 3 10 1 1.438 270 8 51.8 1 0.02 4.439 ln 0.9 C kN                   TRIAL #1 Deep Groove 02-65mm C’10=55.9kN, C0=34kN …… Fe=10.2 kN C10=66.0 kN TRIAL #2 02-75mm C’10=66.3kN, C0=40.5kN …… Fe=10.48kN C10=67.85 kN TRIAL #3 02-80mm C’10=70.2kN, C0=45kN …… Fe=10.6kN C10=68.51kN C’10>C10 Choose 02-80mm Deep Groove√ TRIAL #1 Angular Contact 02-70 mm C’10=68.9kN, C0=45.5kN …… Fe=10.62kN C10=68.64kN C’10>C10 Choose 02-70mm Angular Contact√