A pair of steel gears have a design life of a million cycles. They have 20° full-depth teeth with a diametral pitch of 8. Both gear and pinion are made of steel heat-treated to 350 Bhn, and both have a face width of 1.0 in. The teeth are machined with the highest quality hobbing operation. The pinion has 35 teeth and rotates 2000 rpm. The gear diameter over pinion diameter ratio is 2. The gears stay below a temperature of 140 °F. Assume a mounting correction factor of Km = 1.6 and an overload factor of K = 1. Use a reliability of 99.9% and a safety factor of 1.5. Use the pinion for the bending fatigue calculations and assume that there is no load sharing. A. What is the fatigue strength for these conditions. B. What is the tangential force acting on the gear teeth? C. Estimate the horsepower that can be transmitted, based only on bending fatigue.

Q: A 17-tooth 20° pressure angle spur gear rotates at 1800 rev/min and transmits 4 hp to a 52-toot…

A: dp=NpPd=1710=1.7 indG=5210=5.2 inV=πdp.np12=π×1.7×180012=801.1 ft/min

Q: A drive system for a large commercial band saw is to be designed to transmit 12 hp. The saw will be…

A: 1 HP = 745.7 = 746 WATT 12 HP = 12 * 746 = 8952 W = 8.952 KW pinion rotates  NP =  3450 rpm gear…

Q: A straight bevel gear pair has the following data: Np = 25; NG = 50: P = 10; 20° pressure angle. If…

A: given; number of teeth of gear (TG)=50number of teeth of pinion (Tp)=25speed of…

Q: A 20° spur pinion with 20 teeth transmits 120 W to a 36-tooth gear. The pinion speed is 100 rev/min,…

A:

Q: The shaft rotating at 550 rpm carries a spur gear B having 96 teeth with a diametral pitch of 6 and…

A: Given data as per the question Speed of shaft =550 rpm No. of teeth on gear B =96 Diametral pitch =6…

Q: Two spur gears are to have a ratio of 9:3 and a 7mm module. If the center distance is to be…

A: Given Data

Q: What is the transmitted load exerted by the pinion on the gear? Report your answer in lbf.

A: Given:Pinion Np=17 teeth, Gear Ng=52 teeth, Pressure angle∅=20∘ Power H=4 hp Diametral pitch Pd=10…

Q: Required information A 20° straight-tooth bevel pinion having 13 teeth and a diametral pitch of 5…

A: Given,A 20° straight-tooth bevel pinion having 13 teeth and a diametral pitch of 5 teeth/in drives a…

Q: A 17-tooth 20° pressure angle spur gear rotates at 1800 rev/min and transmits 4 hp to a 52-tooth…

A:

Q: What is the total force exerted by the pinion on the gear? Report your answer in lbf.

A:

Q: *:A 18 teeth 20°normal pitch angle helical pinion with a right-hand helix angle of 30° and The…

A: Contact stress is stress which produces due to pressure or forces which does not exceed the elastic…

Q: 18. A wormgear set has a single-thread worm with a pitch diameter of 1.250 in, a diametral pitch of…

A: WORMGEARING DATA FROM PROB. 8-52:To=924 LB.IN.) MG-30rem FORCES: W+G=Wxw = To / (06/2) = 924 28-IN.…

Q: Two spur gears are to have a ratio of 9:3 and a 7mm module. If the center distance is to be…

A: Module(m) = 7 mmCentre Distance(CD) = 200 mmGear Ratio (GR) = 9:3 = 3:1GR = (T/t) = 3:1T = Teeth on…

Q: ral p

A:

Q: The number of teeth on pinion

A: Given; Determine the number of teeth on pinion ?Where,  A pair of spur gears with;Module, m=5…

Q: A parallel helical gearset consists of a 21-tooth pinion driving a 63-tooth gear. The pinion has a…

A:

Power Transmission Elements

It is defined as the energy transfer from one location to another location. The energy will start moving from the energy generation source to the energy applied position to obtain the work output. From this method, a large amount of electric energy moves from the power station to various electrical substations.