Question

An outer hub rotates around a stationary shaft, supported by two tapered roller bearings as shown below. The device is to operate at 260 rev/min, 8 hours per day, 5 days per week, for 5 years, before bearing replacement is necessary. A reliability of 90 percent on each bearing is acceptable. A free body analysis determines the radial force carried by the upper bearing to be 13 kN and the radial force at the lower bearing to be 27 kN. In addition, the outer hub applies a downward force of 6 kN. Assuming bearings are available with K = 1.5, find the required radial rating for each bearing. Assume an application factor of 1.2.

          An outer hub rotates around a stationary shaft, supported by two tapered roller bearings as shown below. The device is to operate at 260 rev/min, 8 hours per day, 5 days per week, for 5 years, before bearing replacement is necessary. A reliability of 90 percent on each bearing is acceptable. A free body analysis determines the radial force carried by the upper bearing to be 13 kN and the radial force at the lower bearing to be 27 kN. In addition, the outer hub applies a downward force of 6 kN. Assuming bearings are available with K = 1.5, find the required radial rating for each bearing. Assume an application factor of 1.2.

An outer hub rotates around a stationary shaft, supported by two tapered roller bearings as shown below. The device is to operate at 260 rev/min, 8 hours per day, 5 days per week, for 5 years, before bearing replacement is necessary. A reliability of 90 percent on each bearing is acceptable. A free body analysis determines the radial force carried by the upper bearing to be 13 kN and the radial force at the lower bearing to be 27 kN. In addition, the outer hub applies a downward force of 6 kN. Assuming bearings are available with K = 1.5, find the required radial rating for each bearing. Assume an application factor of 1.2.

Added by Robert C.

Question

Please give Ace some feedback