Gear And Gear Unit Design: Theory and Practice

By Prof. Rathindranath Maiti   |   IIT Kharagpur
Learners enrolled: 1863
Over and above the outline of gear design that are taught in undergraduate and postgraduate levels through the basic course of design of Machine Elements or specialized course Mechanical Drives, detail aspects of practical design in industries will be focused. The course would help to fill the gap the knowledge at graduation and step into producing the detail design and drawing of gear units in Industries. The course is developed based on long time research, teaching and working in industries in this area.

  • It may be considered as a part of UG Core Course‐ Design of Machine Elements,but in a rigorous way.
  • Mostly suitable for UG (Senior Level) and PG engineering students of Mechanical Engineering/Aeronautical Engg./Automobile Engg./Agricultural (Machinery) Engg./Mining (Machinery) Engg.

PRE REQUISITE : Prior knowledge of general mechanics, theory of machines and solid mechanics

INDUSTRY SUPPORT : Industries designing/manufacturing gears and gear units, and machines involving gears, such as earth moving & construction machineries, conveying and elevating equipment's, automobiles, aircrafts, machine tools etc., would recognize this online course.
Course Status : Completed
Course Type : Elective
Duration : 8 weeks
Category :
  • Mechanical Engineering
  • Product Design
Credit Points : 2
Level : Undergraduate
Start Date : 21 Feb 2022
End Date : 15 Apr 2022
Enrollment Ends : 21 Feb 2022
Exam Date : 23 Apr 2022 IST

Note: This exam date is subjected to change based on seat availability. You can check final exam date on your hall ticket.

Page Visits

Course layout

Week 1: Introduction to Gear and Gear unit Design 
Week 2: Design of Spur (Straight and Helical), Bevel and Worm gears.  
Week 3: Design of a gear box- part-1
Week 4: Design of a gear box- part-2
Week 5: Design of a gear box- part-3
Week 6: Design of a gear box- part-4
Week 7: Introduction to Involute Gear Tooth Correction
Week 8: Internal Gearing, Epicyclic and other special Gearing

Books and references

  1. Spotts M. F., Design of Machine Elements, Prentice Hall of India.
  2. Shigley's Mechanical Engineering Design (McGrawHill Series in Mechanical Engineering) Hardcover – January 27, 2014 by Richard Budynas(Author), Keith Nisbett (Author).
  3. PSG Design Data Book, or any other Machine Design Data Book.
  4. G. M. Maitra, Handbook of Gear Design. (2nd. edn., 1989 ISBN 0074602373), McGrawHill pub co ltd India.
  5. J. E. Shigley, ‘Theory of Machines’, Mc Graw Hill, 1961.
  6. E. Buckingham, ‘Analytical Mechanics of Gears’, Dover Publications, Inc.1963, (ISBN 0486657124).
  7. F. L. Litvin & A. Fuentes, Gear Geometry and applied Theory (2nd. Edn.,2004), Cambridge University press, ISBN 0521815177.
  8. Gisbert Lechner, Harald Naunheimer (In Collaboration with Joachim Ryborz) : Automotive Transmissions Fundamentals, Selection, Design and Application. Springer 1999. ISBN 354065903X.

Note: Some reference books / papers will be suggested during the course work.

Instructor bio

Prof. Rathindranath Maiti

IIT Kharagpur
Rathindranath Maiti is at present Professor in Mechanical Engineering Department, IIT, Kharagpur. His teaching and research interests are Machine design, Gear Engineering, Mechanical and Fluid Drives. He has worked in Design and R&D divisions in Hindustan Aeronautics Ltd. and Macneil and Magor Ltd. in India and Eaton Hydraulics in Japan, for about ten years together. Recipient of DAAD and INSA Fellowships he has worked in the areas of Fluid power/Mechanical Power Transmissions in TU-Dresden, Germany; Cardiff School of Engineering, UK ; Krakow University of Technology and Wroclaw University of Technology, Poland. Publications, over 40 in peer reviewed international journals and conferences; and few patents are in his credit.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 23 April 2022 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.


Average assignment score = 25% of average of best 6 assignments out of the total 8 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Kharagpur .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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