A pair of straight bevel gears is required to transmit 10 kW at 500 r.p.m. from the motor shaft to another shaft at 250 r.p.m. The pinion has 24 teeth. The pressure angle is 20°. If the shaft axes are at right angles to each other, find the module, face width, addendum, outside diameter and slant height. The gears are capable of withstanding a static stress of 60 MPa. The tooth form factor may be taken as 4.5

Elements Of Electromagnetics
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A pair of straight bevel gears is required to transmit 10 kW at 500 r.p.m. from the motor shaft to
another shaft at 250 r.p.m. The pinion has 24 teeth. The pressure angle is 20°. If the shaft axes are at
right angles to each other, find the module, face width, addendum, outside diameter and slant height.
The gears are capable of withstanding a static stress of 60 MPa. The tooth form factor may be taken as
4.5
0.154 – 0.912/T, where T is the equivalent number of teeth. Assume velocity factor as
4.5 + v '
1
of the slant height of the pitch
where v the pitch line speed in m/s. The face width may be taken as
cone.
[Ans. m = 8 mm ; b = 54 mm ; a = 8 mm ; Do = 206.3 mm ; L = 214.4 mm]
%3D
Transcribed Image Text:A pair of straight bevel gears is required to transmit 10 kW at 500 r.p.m. from the motor shaft to another shaft at 250 r.p.m. The pinion has 24 teeth. The pressure angle is 20°. If the shaft axes are at right angles to each other, find the module, face width, addendum, outside diameter and slant height. The gears are capable of withstanding a static stress of 60 MPa. The tooth form factor may be taken as 4.5 0.154 – 0.912/T, where T is the equivalent number of teeth. Assume velocity factor as 4.5 + v ' 1 of the slant height of the pitch where v the pitch line speed in m/s. The face width may be taken as cone. [Ans. m = 8 mm ; b = 54 mm ; a = 8 mm ; Do = 206.3 mm ; L = 214.4 mm] %3D
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