The horsepower required to drive 40 mm power screw having a pitch of 8 mm, is 3 hp. The screw is single threaded and is made of cold-rolled steel with Sut=550 MPa and Sy=380 MPa and the nut is made of ASTM NO.20 cast iron. The nut height is 50 mm. A factor of safety for possible failures in the threads is 3. If the screw is rotating at a speed of 50 rpm, determine; a) the maximum force that can be applied by the nut b) the efficiency of screw-nut c) the coefficient of friction between the nut and the screw.
The horsepower required to drive 40 mm power screw having a pitch of 8 mm, is 3 hp. The screw is single threaded and is made of cold-rolled steel with Sut=550 MPa and Sy=380 MPa and the nut is made of ASTM NO.20 cast iron. The nut height is 50 mm. A factor of safety for possible failures in the threads is 3. If the screw is rotating at a speed of 50 rpm, determine; a) the maximum force that can be applied by the nut b) the efficiency of screw-nut c) the coefficient of friction between the nut and the screw.
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
Related questions
Question
The horsepower required to drive 40 mm power screw having a pitch of 8 mm, is 3 hp. The screw is single threaded and is made of cold-rolled steel with Sut=550 MPa and Sy=380 MPa and the nut is made of ASTM NO.20 cast iron. The nut height is 50 mm. A factor of safety for possible failures in the threads is 3. If the screw is rotating at a speed of 50 rpm, determine;
a) the maximum force that can be applied by the nut
b) the efficiency of screw-nut
c) the coefficient of friction between the nut and the screw.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY