2) A 12-tooth, 1/10 in module (m) steel pinion hobbed using a 25 pressure angle with a addendum o...
9. AGMA Shigley 5th Ed. 14-27 A 17-tooth 20°-pressure angle spur pinion rotates at 1800 rev/min and transmits 4 hp to a 52-tooth gear. The diametral pitch is 10, the face width is 1.25 in, the quality standard is No. 6, and the mounting is with exceptional rigidity. The pinion is steel, hardened to Brinell 240, and the gear is of No. 30 cast iron. Find the factor of safety based on surface fatigue strength if the life is to...
(130) 10. A hobbed steel pinion has a module of 4 mm, a 20° pressure angle with a dedendum of 1.25m, and 22 teeth. This pinion rotates at 575 revlmin and transms 7.5 kW to a 60-toot on the teeth based on a face width of 38 mm h steel gear. Determine the critical surface compressive stress
7) [30 pts] Factor of Safety for Contact Stress A steel spur pinion has 16 teeth cut on the 20 full-depth system with a module of 8 mm and a face width of 90 mm. The pinion rotates at 150 rev/min and transmits 3 kW to the mating steel gear. This pinion is to mesh with a steel gear with a gear ratio of 4:1. The Brinell hardness of the teeth is 200, and the tangential load transmitted by the...
Please help. Thx Part 2 (50 pts) A single-reduction spur gear system is as shown. The pinion "P" drives gear "G. Pinion"Pis driven at 1800 rpm with 1.5 hp Pinion "P" has a pitch diameter of 2 inches, and has 20 teeth. The gear "Ghas 120 teeth. All teeth have a pressure angle of 20, full-depth, hobbed profile, and a face width of 0.5 inches. All materials are steel. Determine: A) Minimum number of pinion teeth: Np,min This shows that...
designs QIII) A 15-tooth, precision-made spur pinion is to drive a 25-tooth gear. A pitch of 6 teeth/in has been selected with a 2.25 in face width. Also, the teeth are to be 25 full depth, with a ddendum of 1.35/ pa for a pinion speed of 1150 rpm, and 10 hp is to transmitted under steady load conditions. The material selected for both gears is a through-hardened steel of a hardness of 302 Bhn . Determined the actors of...
3. A commercial enclosed gear drive consists of a 20 spur pinion having 16 teeth driving a 48-tooth gear. The pinion speed is 300 rev/min, the gear face width 2 in., and the diametral pitch 6 teeth/in. The gears are grade t steel, through-hardened at 200 Brinell, made to No. 6 quality standards, uncrowned, and are to be accurately and ngid mounted Assume a lion life ofi will transmitareliability of90%(KR 0.85), and use YN 1.355N 01:8 and Z 1. used...
A 16-tooth right-handed helical pinion turns at 2000 rpm and transfers 5kw to a 38-tooth gear with 30 helix-angle 25 pressure angle. Normal module is 2 mm. Determine pitch diameters; tangential module; axial and tangential pitch; normal pressure angle; transmitted load.
A step down gear drive is used in a conveyor system. The input pinion is made of 18 teeth runs at 1720 rpm, the driven gear runs at 860 rpm. The gears are supported on less rigid mountings, less accurate gears. The gears are made by hobbing process. Find: (a) The tooth bending strength of both wheels and the maximum power that can be transmitted to the drive (b) By considering surface durability conditions find the_maximum power that can be...
12. [25 points] A grade-2 through-hardened steel pinion with BHN of 350 is driving a steel gear of the same material and hardness. The diameteral pitch is 10, the number of teeth on pinion is 18, the face width is 0.95 inch, and the pressure angle of the full-depth teeth is 20 degrees The input (pinion) rpm is 2000 and the output rpm is 500. The gears transmit 5 horsepower. The gearbox precision corresponds to "commercial enclosed gear units". Determine...
A pair of enclosed spur gears have z1 =20, z2 =80, m = 3 mm and face width factor of ?d =1.0. The pinion rotates at n1 =970 rpm. The allowable contact stress of the pinion and gear are [?H1] = 700 MPa, [?H2] = 500 MPa, respectively. The load factor is K =1.5, zone factor is ZH =2.5, elastic coefficient is ZE =189.8 MPa1/2. Determine the power that can be transmitted by tooth surface contact strength analysis.