The gear-reduction unit shown has a gear that is press fit onto a cylindrical sleeve that rotates around a stationary shaft. The helical gear transmits an axial thrust load T of 1000 N as shown in the figure. Tangential and radial loads (not shown) are also transmitted through the gear, producing radial ground reaction forces at the bearings of 3200 N for bearing A and 2400 N for bearing B. The desired life for each bearing is 100 kh at a speed of 180 rev/min with a 90 percent reliability. The first iteration of the shaft design indicates approximate diameters of 30 mm at A and at B. Select suitable tapered roller bearings .

The gear-reduction unit shown has a gear that is press fit onto a cylindrical sleeve that rotates around a stationary shaft. The helical gear transmits an axial thrust load T of 1000 N as shown in the figure. Tangential and radial loads (not shown) are also transmitted through the gear, producing radial ground reaction forces at the bearings of 3200 N for bearing A and 2400 N for bearing B. The desired life for each bearing is 100 kh at a speed of 180 rev/min with a 90 percent reliability. The first iteration of the shaft design indicates approximate diameters of 30 mm at A and at B. Select suitable tapered roller bearings .

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Question

The gear-reduction unit shown has a gear that is press fit onto a cylindrical sleeve that rotates
around a stationary shaft. The helical gear transmits an axial thrust load T of 1000 N as shown in the
figure. Tangential and radial loads (not shown) are also transmitted through the gear, producing radial
ground reaction forces at the bearings of 3200 N for bearing A and 2400 N for bearing B. The desired
life for each bearing is 100 kh at a speed of 180 rev/min with a 90 percent reliability. The first iteration
of the shaft design indicates approximate diameters of 30 mm at A and at B.
Select suitable tapered roller bearings.
B

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