A steel spur pinion has a module of 2 mm, 20 full depth teeth, a pressure angle of 20 degrees, and a face width of 15 mm. At a speed of 1500 rev/min, uniform load and accurate mounting,this pinion is expected to carry a steady load of 0.75 kW. The design life corresponds to 5 years of 60 hours/week, 50 weeks/year operation. Using a reliability of 90%, quality index of Qy =6, assume no load sharing and pinion are made of steel heat- treated to 300 HB with bending fatigue strength of 280 MPa.a. Determine the resulting bending stress.b. Safety factor against bending

Given: Module, Pressure angle, Pinion speed, Load, Teeth on pinion, Face width,

Answered: a Determine the resulting bending…

Engineering

Mechanical Engineering

a Determine the resulting bending stress. b. Safety factor against bending

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A 21-tooth pinion rotating at 1000 rpmrpm meshes with a 33-tooth gear in a spur-gear reducer. Both pinion and gear are manufactured to a quality level of 9. A reliability of 0.9 has been specified and the transmitted tangential load is 2500 lblb. Conditions are such that Cm= 1.7. It is proposed that standard 25∘∘, full-depth teeth be used, with both pinion and gear hobbed from an AISI 4140 nitrided steel. The diametral pitch is 6, and the face width 2.000 inin. Suppose that the life of the pinion will be less than that of the gear, the lubricant bulk temperature does not exceed 250∘F∘F, both driver and driven devices are smooth-running, the gearset is external, gears made by conventional methods. Use the average value for the uncorrected surface-fatigue strength when choosing it from the appropriate table. Assume that the reducer is used for critical service applications. a)What is the dynamic factor (Cv) for the pinion? b)What is the AGMA Surface-Geometry Factor(I) for the pinion/gear…
A double square thread power screw is to raise a load of 70 kN. The screw has a mean diameter of 33.375 mm and a pitch of 6 mm. The coefficient of thread friction and collar friction are 0.13 and 0.10, respectively. The collar mean diameter is 90 mm and the screw turns at 90 rpm. Which of the following is the torque required to raise the load without friction effect? Group of answer choices 66845 N-mm 133690 N-mm 236078 N-mm 334840 N-mm
A double square thread power screw is to raise a load of 70 kN. The screw has a mean diameter of 33.375 mm and a pitch of 6 mm. The coefficient of thread friction and collar friction are 0.13 and 0.10, respectively. The collar mean diameter is 90 mm and the screw turns at 90 rpm. Which of the following is the torque required to overcome the collar friction? Group of answer choices 630000 N mm 315000 N mm 819000 N mm 409500 N mm
A truck equipped with a 50 HP engine uses a roller chain as the final drive to the rear axle. The driving sprocket runs at 225 rpm with a center distance of approximately 500 fpm. The transmission efficiency between the engine and the driving sprocket is 85%. 1.1 Determine the pitch and width of chain to be used. 1.2 Determine the number of teeth in each sprocket and the pitch diameters.
What is the fatigue-strength reduction factor for a shaft with an annealed sled-runner keyway under torsion if the notch sensitivity factor is 0.72?
A pair of gears with 20° full-depth teeth are to transmit 15hp at 1750 rpm of the 4-in pinion; velocity ratio desired is about mw= 4; intermittent service. Use a strength reduction factor of about 1.4, with the load at the tip and teeth carefullycut. A.Determine the diametral pitch, B. face width, C. and tooth numbers if the material is cast iron, class 25
A Design of Single Reduction Spur Gearbox An input shaft connected to the motor rotates at 1200 rpm, while the output speed must be 570 rpm. The contact force between the gears is transmitted through the pressure angle of 20°. The radial force is 321,90 kN. The material for both gear and pinion is 817M40. 1.1) select the suitable gear and pinion (make use of the Lewis formula). Then, do one set of calculations for single reduction gearbox
The client requires a single step-up spur gearbox to transmit a 10 kW power from a shaft rotating at 1000 rpm, while the output speed must be 1700 rpm. The material for gear and pinion is 817M40 and 655M13, respectively. Use table 6.10 on page 128 to select the suitable gear and pinion. 1.1 Briefly state the problem. 1.2 State the design specification considering the following design factors: 1. Functionality 2. Stress 1.3 State formula and standards relevant to the single step-up spur gearbox design. 1.4 If the pinion has 20 teeth, use the Lewis formula to determine the face width of the pinion and gear. Then, do one set of calculations and tabulate the answers. 1.5 Conclusion.
The client requires a single step-up spur gearbox to transmit a 10 kW power from a shaft rotatingat 1000 rpm, while the output speed must be 1700 rpm. The material for gear and pinion is 817M40and 655M13, respectively State the design specification considering the following design factors:1. Functionality2. Stress
The client requires a single step-up spur gearbox to transmit a 10 kW power from a shaft rotating at 1000 rpm, while the output speed must be 1700 rpm. The material for gear and pinion is 817M40 and 655M13, respectively. Use table 6.10 on page 128 to select the suitable gear and pinion. If the pinion has 20 teeth, use the Lewis formula to determine the face width of thepinion and gear. Then, do one set of calculations and tabulate the answers.
An input shaft connected to the motor rotates at 1200 rpm, while the output speed must be 570 rpm. The contact force between the gears is transmitted through the pressure angle of 20°. The radial force is 321,90 kN. The material for both gear and pinion is 817M40. 1.1 Select the suitable gear and pinion (make use of the Lewis formula). Then, do one set of calculations and tabulate the answers.
It is required to design a chain drive with a duplex chain to connect a 15 kW, 1400 rpm electric motor to a transmission shaft running at 350 rpm. The operation involves moderate shocks. (i) Specify the number of teeth on the driving and driven sprockets. (ii) Select a proper roller chain. (iii) Calculate the pitch circle diameters of the driving and driven sprockets. (iv) Determine the number of chain links. (v) Specify the correct centre distance. During preliminary stages, the centre distance can be assumed to be 40 times the pitch of the chains