Bonfiglioli - Houston Bearing and Supply

c 2 ) input shaftFor the resulting force « R c1 » calculated through formula (15), determine the distance the forceapplies from shaft shoulder « x ». From the radial load diagram relevant to the specific unit locatethe permitted overhung load « R n1 » corresponding to the actual «x»distance.The following condition must be verified:R n1 R c1(20)(A8)Values listed in the diagram apply for:- drive speed n 1 = 1000 rpm- 5000 hrs theoretical lifetimeFor different speed, or life expectancy, consider:- The adjusting factor « f n1 » as per table (A8) here below:n 1 [rpm] 500 750 900 1200 1500 1800f n1 1.23 1.09 1.03 0.95 0.89 0.84- a lifetime factor « f L » as per table (A6).The following condition must be verified:R n1 f n1 R c1 f L(21)d) Thrust loadsCalculate value and direction of thrust Ac 2 that applies axially onto the shaft. For the gearboxunder study locate the adjusting factor fa 2 corresponding to the type of output and the directionthe thrust load applies, with the signs (+) and (-)conventionally applied as follows:(+) (-)An 2From Rn 2 and fa 2 determine the value of admissible thrust load An 2 :An2 Rn2 fa(22)2From chart (A6) select the adjusting factor f L corresponding to the theoretical lifetime of bearingsthat is to be expected.16