A multiple V-belt drive is required to transmit 4 kW. The smaller pulley of the system is 150 mm diameter, rotates at 200 rev/min, and has an angle of lap angle of 135°. The grove angle is 40° and the coefficient of friction between the belt and the pulleys is 0·3. If the maximum tension in any one belt is limited to 800 N, calculate: (a) The number of belts required. (b) The minimum tension in any one belt. (c) The required pre-tensioning of the belt. The centre-to-centre distance between the pulleys is 2 m. (d) Determine to the nearest mm, the required size for the larger pulley. (e) Find the approximate length of the belt

A multiple V-belt drive is required to transmit 4 kW. The smaller pulley of the system is 150 mm diameter, rotates at 200 rev/min, and has an angle of lap angle of 135°. The grove angle is 40° and the coefficient of friction between the belt and the pulleys is 0·3. If the maximum tension in any one belt is limited to 800 N, calculate: (a) The number of belts required. (b) The minimum tension in any one belt. (c) The required pre-tensioning of the belt. The centre-to-centre distance between the pulleys is 2 m. (d) Determine to the nearest mm, the required size for the larger pulley. (e) Find the approximate length of the belt

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.57P: The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a...

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A multiple vee-belt drive is required to transmit 4 kW. The smaller pulley has of the systemhas a diameter 150 mm and rotates at 200 rev/min. The grove angle is 40° and thecoefficient of friction between the belt and pulley is 0·3.(a) If the maximum tension in any one belt is limited to 800 N and the angle of lap is135°, determine the number of belts required. (b) Determine also, the initial pre-tension required in the belt.
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