A 15 kW and 1200 r.p.m. motor drives a compressor at 300 r.p.m. through a. pair of spur gears having 20° stub teeth. The centre to centre distance between the shafts is 400 mm. The motor pinion is made of forged steel having an allowable static stress as 210 MPa, while the gear is made of cast steel having allowable static stress as 140 MPa. Assuming that the drive operates 8 to 10 hours per day under light shock conditions, find from the standpoint of strength,1. Module; 2. Face width and 3. Number of teeth and pitch circle diameter of each gear.Check the gears thus designed from the consideration of wear. The surface endurance limit may be taken as 700 MPa. A 15 kW and 1200 r.p.m. motor drives a compressor at 300 r.p.m. through a pair of spur gears having20° stub teeth. The centre to centre distance between the shafts is 400 mm. The motor pinion is madeof forged steel having an allowable static stress as 210 MPa, while the gear is made of cast steelhaving allowable static stress as 140 MPa. Assuming that the drive operates 8 to 10 hours per dayunder light shock conditions, find from the standpoint of strength,1. Module; 2. Face width and 3. Number of teeth and pitch circle diameter of eachgear.Check the gears thus designed from the consideration of wear. The surface endurance limit may betaken as 700 MPa.

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Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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A 15 kW and 1200 r.p.m. motor drives a compressor at 300 r.p.m. through a. pair of spur gears having 20° stub teeth. The centre to centre distance between the shafts is 400 mm. The motor pinion is made of forged steel having an allowable static stress as 210 MPa, while the gear is made of cast steel having allowable static stress as 140 MPa. Assuming that the drive operates 8 to 10 hours per day under light shock conditions, find from the standpoint of strength,

1. Module; 2. Face width and 3. Number of teeth and pitch circle diameter of each gear.

Check the gears thus designed from the consideration of wear. The surface endurance limit may be taken as 700 MPa.

A 15 kW and 1200 r.p.m. motor drives a compressor at 300 r.p.m. through a pair of spur gears having
20° stub teeth. The centre to centre distance between the shafts is 400 mm. The motor pinion is made
of forged steel having an allowable static stress as 210 MPa, while the gear is made of cast steel
having allowable static stress as 140 MPa. Assuming that the drive operates 8 to 10 hours per day
under light shock conditions, find from the standpoint of strength,
1. Module; 2. Face width and 3. Number of teeth and pitch circle diameter of each
gear.
Check the gears thus designed from the consideration of wear. The surface endurance limit may be
taken as 700 MPa.

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