To design common machine elements and gain experience in solving design problems. To prepare professional quality solutions and communicate the results of analysis and design, effectively.


CLO-1: Describe designs of common machine elements like gears, bearings, shafts, belts and chains.(C5)
CLO-2: Evaluate the designs of machine elements related to transmission. (C5)
CLO-3: Select a case study related to transmission and explain its design, calculations and working in the form of report and presentation. (A3)


  1. Spur, Helical, Bevel and Worm Gears Ten Lectures
  • Geometry and nomenclature of Spur, Helical, Bevel and Worm Gears
  • Forces in Spur, Helical, worm and Bevel gears.
  • Stress calculations in spur, helical and bevel gears.
  • Material strength calculations for gears.
  • Rating method in Wormsets.

2. Design of Flywheels Three Lectures

  • Energy variations in a rotating system
  • Determining the flywheel inertia
  • Stresses in flywheels
  • Failure criteria

3. Rolling Element Bearings Three Lectures

  • Types of Rolling Element Bearings.
  • Failure of Rolling Element Bearings.
  • Selection of Rolling Element Bearings.
    • Basic dynamic load rating
    • Basic static load rating
  • Combined radial and thrust loads
    • Calculation procedures

4. Sliding Contact Bearings Four Lectures

  • Full-Film Lubrications
  • Boundary Lubrications
  • Hydrodynamic Theory of Lubrication
  • Design of Hydrodynamic Bearings

5. Design of Clutch / Brakes Five Lectures

  • Different types of clutches and designing concepts
  • Different types of brakes and designing concepts

6. Design of Power Screws Three Lectures

  • Introduction to power screws
  • Stresses in power screws
  • Efficiency of power screws
  • Applications of power screws

7. Flexible Machine Elements Four Lectures

  • Introduction to belts
  • Flat and round belt drives
  • Flat metal belts
  • V belts
  • Roller chains
  • Wire ropes