Find the specific film thickness and lubrication condition between the two teeth in contact if lubricated with an ISO VG 1000 oil at 120F.

Problem 7-32 determined the half-dimensions of the contact patch for two steel gears in mesh with a contact force of 1500 lb to be = 0.0177 in and = 0.3125 in (half-width of a tooth face). The gears are modeled as two cylinders in contact with radii of 2.500 in (driver) and 5.000 in (driven gear). Find the specific film thickness and lubrication condition between the two teeth in contact if lubricated with an ISO VG 1000 oil at 120F. Assume both teeth have Rq = 4 μin. The tangential velocities of the gear teeth are 55.6 in/sec (driver) and 57.8 in/sec (driven).

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….