ME357 Bearing Solutions 9-2 ANGULAR-CDUTACT OZSERIES BALL BEARING SELECTION 4D= SO000(4Bo)o 1ab s1440 RATIMG LIVEs.THE DESIGU LOAD 15 RADIAL,ANDIS Fp=1.4(6)=8541b =3.80 kN 三®.(9-6) 3 -85r["]'”25644s423kw TABLE 9-2:SELEcr 0z-SSmm wIrH C=46.2kN Ans. Us1J(Em.(9-18) a-exp(- =o.927As
ME357 Bearing Solutions 9-2 9 - 6 9 9 - 18
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 Contact
9-9 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√
73 So Cto=FD 270 =84.47kW 0.02+4.439 11.438 In- 0.96 For Deep Groove Choose 02-90mm C'10=95.6kN,Co=62kN Fe=11.12kN C1o0=88.81kN Choose 02-90mm Deep Groove For Angular contact Choose 02-85mm C'10=90.4kN,Co=63kN Fe=11.15kN C10=88.77kN Choose 02-85mm Angular Contact
So 1 3 10 1 1.438 270 84.47 1 0.02 4.439 ln 0.96 C FD kN For Deep Groove Choose 02-90mm C’10=95.6kN, C0=62kN Fe=11.12 kN C10=88.81kN Choose 02-90mm Deep Groove√ For Angular contact Choose 02-85mm C’10=90.4kN, C0=63kN Fe=11.15 kN C10=88.77kN Choose 02-85mm Angular Contact√
9-11 Sol Roll diameter D=4in Gear diameter D,=3in Roll load Ly =30lb/inx8in =240lb Idler Lz 24lb/inx8in=1921b Firstly,we do force analysis 水ROY 0 LY ROZ RAY LZ FZ FY Motion balance X-Axis M=M F2D,=LzD 1921b×4in F2= =2561b 3in F=Ftan20°=93.2lb Force system balance
9-11 Sol. Roll diameter D 4in Gear diameter 2 D 3in Roll load 30 / 8 240 LY lb in in lb 24 / 8 192 LZ lb in in lb Firstly, we do force analysis Motion balance X-Axis M M Force system balance 2 192 4 256 3 tan 20 93.2 Z Z Z Y Y F D L D lb in F lb in F F lb
个LY ROY RAY个 B A FY Y: Roy +Ray +Ly=Fy RAy×OA+Ly xOC=F×OB R4y=-4.51b Ror=-1421b 个L2 ROZ木 RAZ木 小FZ B 一X Z: Roz +Lz+Riz+F2=0 Lz×OC+R2×OA+F2×OB=0 R42=-413b Roz =-35lb R=VRz+Rm=V(-35)}+(-142)2=146b R4=√R2+R3y=V(-413)+(-4.51)2-413b Combined reliability is 0.92 Single reliability is 0.92 =0.96 30000×60×300 106 540
Y: Z: 0 0 OZ Z AZ Z Z AZ Z R L R F L OC R OA F OB 413 35 AZ OZ R lb R lb 2 2 2 2 2 2 2 2 35 142 146 413 4.51 413 O OZ OY A AZ AY R R R lb R R R lb Combined reliability is 0.92 Single reliability is 0.92 0.96 OY AY Y Y AY Y Y R R L F R OA L OC F OB 4.51 142 AY OY R lb R lb 6 30000 60 300 540 10 Dx