A large number of deep-groove ball bearings have been operating at 42% of their dynamic load rating for 5 million revolutions. The radial equivalent load is now changed to 10% of the dynamic load rating. After how many additional revolutions would you expect that 10% of the bearings would have failed? Express your answer in number of revolutions.

I need answer in handwriting

Two parts of a machine, both made from steel, are held together by 7 equally-spaced M6 x 1.0 grade 8.8 bolts that are uniformly tightened to provide a total initial clamping force of 60 kN. What wrench torque is required to set the preload on these bolts? Assume a torque factor of 0.18 in your calculations. Express your answer in units of newton meters to a resolution of 0.1 N-m.

a. The following illustration shows the shaft and housing fits for a bearing system. The bottom half of the chart is the shaft fit section and the top half is the housing fits for bearing. Explain this illustration (What this illustration is trying to convey?). discuss (these blocks, F, G, H,..etc) What does these blocks represent? On what basis should you select clearance or interference fit for a bearing? Why is it important? For illustration only Ier Ring Oue Ring Bere Dameter Housing Bearing MMIMT Outer ring tolerance Clearae Tratn Terferene Clece Tioe fesne ft Inner ring tolerance Shaft