The bearing is subjected to radial load of 7535 N, the desired life of the bearing is 170 million of revolutions at 425 rpm. When equivalent load of 16.964 kN is acting, Find the suitable axial load by taking factors. X-0.75,Y=2.5,V=1 Select one: O a. 467.5 kN O b. 6823 N O C. 4525 N O d. 84.765 N

A) A shat of diameter of d= 35 mm is subjected to a torque varying between 100 N.m to 500 N.m. The SCF due to keyway is 1.5, Su = 500 MPa, S', = 200 MPa. Correction factor for torsion=0.6. Surface finish factor=0.85 and size factor=0.82. Find the value of fatigue factor of safety F.S. Is the design of the shaft safe or not? And why?

TI=30NM, T2=155NM, T3=85NM and dBC=22mm. 12 010 T3 T2 T1 3-1892615112 D 010 b180106003- 1892615112 \dcp 1826151126 b180106003-18926 dBC B. `dAB b180100003-18926151126 In the figure above, torques TI, T2 and T3 are applied, respectively, to discs A, B and C on the shaft, which is fixed at point D. 3-1892815112s b180106003-18926 The diameters of the shaft segments are indicated in the figure and their values are given below (if they are required). Length of each segment on the shaft has the same value and is equal to L(AB)=L(BC)=L(CD)=400 mm. b180106003- 18926151126 Shear modulus of the material is 80 GPa. o-18926151126 b180108003-18926 Calculate the maximum shear stress g003-18926151126 003-18926 b18 on shaft segment BC. 010600s28151128 B A 46 MPa 60 MPа b180106003- 18926 b180106003- 1892615112 b180106003- 18928151126 38 MPa b180100003-1892615112 57 MPa b180106003- 18926151126 E b180108003-18928 31 MPа b180106003- 18926151126 b180106003- 18926151128 b180106003- 18928151126…

An 02-seris single-row deep-groove ball bearing with a 90 mm bore (C0 = 62 kN, C10 = 95.6 kN) is loaded with a 4.34 kN axial load and a 10 kN radial load. The inner ring rotates at 600 rpm (v=1). What is the FaC0? Should X1/Y1 or X2/Y2 be used to caculate the equivalent radial load? Determine the equivalent radial load experienced by this bearing. What is the bearing’s in-use reliability, assuming a design life of 2*10^8 revolutions and an application factor of 1.2?

Calculate the basic rating life at 90% reliability for the following cylindrical roller bearing and conditions.Fr 5.05 kNFa 3.12 kNBearing: NU 1010 ECP (on pp 522 in the SKF catalogue)Clearance: Normal Give the answer in millions of revolutions.

QUESTION 1 TOLERANCE A solid steel shaft with a diameter of 130 mm must be press-fittd in a journal bearing (Figure 1) with an inlet and outet diameters of 130 and 145 mm, respectively. Both solid shaft and journal bearing require rigidity and alignment with an accuracy of the location. Consider a journal bearing hlet diameter as the basic size. Outlet Bearing Inlet Joumal Figure 1 AJournal Bearing 1.1 State the two applicable standards when determining the fits for holes and shafts. Determine the following: 1.2 the tolerance class, ISO code, and the nominal diameter that can be used, 1.3 the tolerance limits for both the solid steel shaft diameter and the journal bearing inlet diameter, and 1.4 the dimensions of both the solid steel shaft diameter and the journal bearing inlet diameter.

2) A shaft is designed with two 6305 bearings. At bearing 1, the radial load is 20 lb, and at Bearing 2, the radial load is 40 lb. What is the expected life of EACH bearing assuming a reliability of 97%? What is the reliability for BOTH bearings together?

Q2: A rotating steel shaft shown: camied by bearings A and E. Machined surface. S - 500 MPa, reliability is 90%, r-3 mm. What is the life of the shaft if design factor 3? 100 100 - 300 15 kN 200- A 304 3rB -3r 35 450

1) A compression spring has square edge and ground ends. The total coil number of spring is 12 and Brinell Hardness number is HB=380. The free length of the spring is 200 mm. The spring is assembled into a machine by compressing, when the machine runs, the spring is compressed 6 mm- 40 mm 18 mm 100 mm. 10 mm a) Is the siring likely to buckled. b) Would this spring developed a permanent set if compressed solid? c) What is the critical frequency?

(8) An axle (non-rotating) is to be machined from AISI 1144, OQT 1,000°F, to the proportions keyway в shown, with a fillet radius r = 0.2D; F varies 1.SD from 400 lb. to 1,200 lb.; the supports are to the left of B, not shown. Let N = 2 (Soderberg Line). 6" (a) At the fillet, compute D and the 30 maximum tensile stress. (b) Compute D at section B. (c) Specify suitable dimensions. Keeping the given proportions, would a smaller diameter be permissible if the fillet were shot-peened?