Question

Consider Figure Q3 below, showing the two bearings required to transmit constant in- service loads between a railway car and one of its axles. Assuming that the two bearings must be identical, select an appropriate medium radial ball bearing to provide one year of continuous operation at 300 rpm with 90% reliability. Assume that the thrust loads are shared equally between the two bearings, and there is a moderate impact. cg 600 lb 2000 lb Figure Q3

Answer 1

Ars: Green that, 200lb Зерзіng е Bearing) 60066 PBH : 3000 KAU-Bools) Laye 1000lb RBV : 100045 IT By Symmebiy in Vertical direction, Rav = Revo 2000 =100016 =10001 RAH = RBH = 6000 = 3001b Therefore, Radial load on bearing AB= fe = 100016 erial load on bearing AB = fa = 300 16. Per equivalent low -8CXV6+ Ypa). leget e for slöady bad. Condition. Vel when inner role Volāge. Pe = 1XÇıx1000+300) - 130066-)5782-6834.

foi 901. Keliabililge Nominal dipello] 40 = 365x24*60x300 = 137.68 x 10% Cyeles .: 40 = 157.68 Million Cycles: Per ball bearing dynamic rating 490 = 40 (Seso 1563-sezਟ ਹੈ 157.68 - 5782-6834) C = 31240.762070 ..C= 31.240 KN =7022.9233 lbs we have select besizing os per abowe dynamic lood roting from bearing cocalogue we can select, Bearingno Boreld) 0.060) widet 6417 3.3465 in 4,7244 in 7087 by resing Bearing catálogue