determine the velocity ratio, the torque ratio, and the gear ratio of the set.

Size the second-stage spur gears in Problem 12-55 for a bending factor of safety of at least 2.4 and a surface factor of safety of at least 2.0 assuming a steady torque, 25° pressure angle, full depth teeth, Q= 10, and AISI 4140 steel for all gears.

Size the third-stage spur gears in Problem 12-55 for a bending factor of safety of at least 2.4 and a surface factor of safety of at least 2.0 assuming a steady torque, 25° pressure angle, full depth teeth, Q= 10, and AISI 4140 steel for all gears.

The pinion of an external gearset has pitch radius rp = 40 mm and the gear has pitch radius rg = 160 mm. If the pinion is the input member of the set, determine the velocity ratio, the torque ratio, and the gear ratio of the set.

design suitable bearings to support the load for at least 5E8 cycles at 1 200 rpm using deepgroove ball bearings.

The shaft shown in Figure P11-4 was designed in Problem 10-19. For the data in row (a) of Table P11-1, and the corresponding diameter of shaft found in Problem 10-19,….

Find the minimum film thickness for a long bearing with the following data: 30-mm dia, 130 mm long, 0.0015 clearance ratio, 1 500 rpm, ISO VG 100 oil at 200°F, and supporting a load of 7 kN.

1.       A paper machine processes rolls of paper having a density of 984 kg/m3. The paper roll is 1.50-m OD X 22-cm ID X 3.23-m long and is on a simply supported, 22-cm OD, steel….

Find the minimum film thickness for a bearing with these data: 30-mm dia, 25 mm long, 0.0015 clearance ratio, 1 500 rpm, ON = 30, ISO VG 220 oil at 200°F.

1.       Problem 7-12 estimated the volume of adhesive wear to expect from a steel shaft of 40 mm dia rotating at 250 rpm for 10 years in a plain bronze….