It is required to design a chain drive to connect 50 hp, 1800 rpm electric motor to a drilling machine. The drill machine will rotate at 900 rpm. The speed reduction ratio is 2:1 and the smaller sprocket has 19 teeth. Consider design factor of 1.1 and smooth load. Specify a chain-sprocket system that will have a service life of 50 Kh.
A 60 hp (44.75 kW) four cylinder IC engine is used to drive a medium shock brick making machine under a schedule of two shifts per day. The derive consists of two 26 in (660 mm) sheaves spaced about 12ft (3.65m) apart with 400 rpm. Select a Gate Rubber V-belt arrangement. Find the factor of safety.
The flywheel of a compressor operating at 170 rev/min has following dimensions: Diameter = 1.5 m; Width = 350 mm. An eight pole squirrel case induction motor has nameplate readings 37 kW and 875 rev/min. Design V-belt drive.
A 800 rev/min 24 hp squirrel case induction motor is to drive a two cylinder reciprocating pump with moderate shock, 2-shifts duty, dirty environment, hazardous environment. The pump speed 160 rev/min. Select a suitable chain and sprocket size, considering liberal approach.
Two shafts 20 ft apart, with axes in the same plane, are to be connected with a flat belt drive powered by 100 Bhp induction motor at 1140 rev/min, drives the second shaft with speed ratio 2:1. The driven shaft drives light-shock machine. Select a flat belt.
A mine hoist uses a 2-in 6×196 \times 196×19 monitor-steel wire rope. The rope is used to haul loads of 4 tons from the shaft 480 ft deep. The drum has a diameter of 6 ft, the sheaves are of good-quality cast steel, and the smallest is 3 ft in diameter. Using a maximum hoisting speed of 1200 ft/min and a maximum acceleration of 2 ft/s22 \text{ ft/s}^22 ft/s2, estimate the stresses in the rope. Estimate the various factors of safety.
A flat-belt drive consists of two 48 in diameter cast-iron pulleys spaced 16 ft apart. Select a belt type to transmit 60 hp at a pulley speed of 380 rev/min for a moderate shock application.
A single V belt is to be selected to deliver engine power to the wheel-drive transmission of a riding tractor. A 5-hp single-cylinder engine is used. At most, 60 percent of this power is transmitted to the belt. The driving sheave has a diameter of 6.2 in, the driven, 12.0 in. The belt selected should be as close to a 92-in pitch length as possible. The engine speed is governor-controlled to a maximum of 3100 rev/min. Select a satisfactory belt and assess the factor of safety and the belt life in passes.
Two B85 V-belts are used in a drive composed of a 5.4 in driving sheave, rotating at 1200 rev/min, and a 16-in driven sheave. Find the power capacity of the drive based on a service factor of 1.25 and find the center to center distance.
A double strand no 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and 52 tooth driven sprocket. What is allowable horsepower of this drive? Estimate center to center distance if the chain length is 82 pitches. Estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30% less than the corrected (allowable) power.