# Gear And Gear Unit Design: Theory and Practice - Institution: IIT Kharagpur - Department: Mechanical Engineering - Teacher: Prof. Rathindranath Maiti - Level: Undergraduate - Language: English - Subjects: Engineering - Source: [NPTEL](https://nptel.ac.in/courses/112105234) - Licence: [CC BY-NC-SA](https://nptel.ac.in/faq) (Non-commercial use only.) - Syllabus: [at the source](https://nptel.ac.in/courses/112105234) - Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words) ## Lectures 1. [Lecture 1: Introduction- Motivation and Theme of the Course](https://invisiblenetwork.ai/learn/nptel/112105234/55f38e46ab5c) (Video) 2. [Lecture 2 : Laws of Gearing, Kinematics and Geometry Part-I](https://invisiblenetwork.ai/learn/nptel/112105234/a6be978949ba) (Video) 3. [Lecture 3 : Laws of Gearing, Kinematics and Geometry Part-II](https://invisiblenetwork.ai/learn/nptel/112105234/b4c675eb6deb) (Video) 4. [Lecture 4 : Involute Toothed Gear- Properties & Terminology](https://invisiblenetwork.ai/learn/nptel/112105234/753026929500) (Video) 5. [Lecture 5 : Tutorial](https://invisiblenetwork.ai/learn/nptel/112105234/2514b6ef6e92) (Video) 6. [LECTURE 6: Involute Straight Tooth Spur Gear](https://invisiblenetwork.ai/learn/nptel/112105234/593a1a661d2f) (Video) 7. [LECTURE 7: Helical Tooth Spur Gear & Loads on Gear Shaft](https://invisiblenetwork.ai/learn/nptel/112105234/20f7056007a9) (Video) 8. [LECTURE 8: Design of Bevel Gear](https://invisiblenetwork.ai/learn/nptel/112105234/b3206a78d4bf) (Video) 9. [LECTURE 9: Crossed Helical Gear-I](https://invisiblenetwork.ai/learn/nptel/112105234/4ccb53511447) (Video) 10. [LECTURE 10: Crossed Helical Gear-II and Worm Gear](https://invisiblenetwork.ai/learn/nptel/112105234/05e2cf050882) (Video) 11. [LECTURE 11 : Gear Unit Design - Selection of Stage Ratios, Pinion & Gear Teeth Numbers](https://invisiblenetwork.ai/learn/nptel/112105234/1b78a4c6ab97) (Video) 12. [LECTURE 12 : Gear Unit Design - First Stage Pinion & Gear Design- I (Module on Beam Strength Basis)](https://invisiblenetwork.ai/learn/nptel/112105234/6a95549a9e4b) (Video) 13. [LECTURE 13 Gear Unit Design - Failure of Gear Tooth (Probable Dynamic Load and Wear Load Capacity)](https://invisiblenetwork.ai/learn/nptel/112105234/b70c30316e47) (Video) 14. [LECTURE 14 Gear Unit Design - 1st. Stage Pinion & Gear Design-II (Probable Dynamic Load and Wear Load Capacity and Finalizing 1st. Stage Pinion & Gear set)](https://invisiblenetwork.ai/learn/nptel/112105234/bb0869c38e62) (Video) 15. [LECTURE 15 Gear Unit Design - 1st. Layout (After Gear Design)](https://invisiblenetwork.ai/learn/nptel/112105234/b8b88272525e) (Video) 16. [LECTURE 16 Bearing Arrangement-Gear Box Shafts](https://invisiblenetwork.ai/learn/nptel/112105234/0ce072927730) (Video) 17. [LECTURE 17: Bearing Load Calculation- Intermediate Shaft](https://invisiblenetwork.ai/learn/nptel/112105234/c5803e25c545) (Video) 18. [LECTURE 18 Bearing Selection & Introduction to Shaft Design Verification](https://invisiblenetwork.ai/learn/nptel/112105234/798db517ad7e) (Video) 19. [LECTURE 19 Design Verification of Gear Box Shafts](https://invisiblenetwork.ai/learn/nptel/112105234/df89fddb02e2) (Video) 20. [LECTURE 20 Development (Layout) of Intermediate Shaft](https://invisiblenetwork.ai/learn/nptel/112105234/4036243899a9) (Video) 21. [LECTURE 21 : Development (Layout) of Input Shaft & Integral Pinion](https://invisiblenetwork.ai/learn/nptel/112105234/71f2ff739d32) (Video) 22. [LECTURE 22 : Development (Layout) of Output Shaft and 2nd. Stage (Output) Gear](https://invisiblenetwork.ai/learn/nptel/112105234/b960dd79d5cd) (Video) 23. [LECTURE 23 : Development (Layout) of Output Shaft (contd.), Loads on Shaft & Bearings](https://invisiblenetwork.ai/learn/nptel/112105234/6b1b915422ea) (Video) 24. [LECTURE 24 : Output Shaft-Bearing Lives](https://invisiblenetwork.ai/learn/nptel/112105234/08930f2f92fb) (Video) 25. [LECTURE 25 : Design Verification of Output Shaft](https://invisiblenetwork.ai/learn/nptel/112105234/5766110e581f) (Video) 26. [LECTURE 26 : Design Verification of Input Shaft (including Bearing Life Estimation)](https://invisiblenetwork.ai/learn/nptel/112105234/6abc44713765) (Video) 27. [LECTURE 27 : Finalizing Design including the Sizes of the Keys](https://invisiblenetwork.ai/learn/nptel/112105234/0ac81721c235) (Video) 28. [LECTURE 28 : Development of Plan & Elevation of Gear Reduction Unit- I](https://invisiblenetwork.ai/learn/nptel/112105234/ace49d1fc4ed) (Video) 29. [LECTURE 29 : Development of Plan & Elevation of Gear Reduction Unit- II](https://invisiblenetwork.ai/learn/nptel/112105234/27baf620bffe) (Video) 30. [LECTURE 30 : Development of Plan & Elevation of Gear Reduction Unit- III](https://invisiblenetwork.ai/learn/nptel/112105234/89ff0894703f) (Video) 31. [Lecture 31 :](https://invisiblenetwork.ai/learn/nptel/112105234/8eec24ed3644) (Video) 32. [Lecture 32 :](https://invisiblenetwork.ai/learn/nptel/112105234/0f0554f09c8d) (Video) 33. [LECTURE 33 Involute Spur Gear Tooth Correction : Part-I](https://invisiblenetwork.ai/learn/nptel/112105234/2f4839fad339) (Video) 34. [LECTURE 34 Involute Spur Gear Tooth Correction : Part-II](https://invisiblenetwork.ai/learn/nptel/112105234/4c17d335cf1f) (Video) 35. [LECTURE 35 Involute Spur Gear Tooth Correction : Part-III](https://invisiblenetwork.ai/learn/nptel/112105234/9fcc73ecce09) (Video) 36. [LECTURE 36 Involute Spur Gear Tooth Correction : Tutorial ( Workout Example)](https://invisiblenetwork.ai/learn/nptel/112105234/9de2e5e4f65b) (Video) 37. [LECTURE 37 Involute Spur Gear Tooth Correction : Tutorial (Workout Example-2)](https://invisiblenetwork.ai/learn/nptel/112105234/eed28ccbbec1) (Video) 38. [LECTURE 38 Tooth Tip Interference, Avoidance and Contact Ratio in Involute Internal Gearing](https://invisiblenetwork.ai/learn/nptel/112105234/48cb2bc59464) (Video) 39. [Lecture 39](https://invisiblenetwork.ai/learn/nptel/112105234/76391881f5de) (Video) 40. [Lecture 40](https://invisiblenetwork.ai/learn/nptel/112105234/f6c945c8d05c) (Video) 41. [Lecture 41](https://invisiblenetwork.ai/learn/nptel/112105234/e6edfff5baf1) (Video) 42. [Lecture 42](https://invisiblenetwork.ai/learn/nptel/112105234/e15e86c56a5a) (Video) 43. [Lecture 43](https://invisiblenetwork.ai/learn/nptel/112105234/c7b91e0dff43) (Video) 44. [Lecture 44](https://invisiblenetwork.ai/learn/nptel/112105234/ce3252e112a8) (Video) 45. [Live Session 27-03-2021](https://invisiblenetwork.ai/learn/nptel/112105234/a6be978949ba-2) (Video) 46. [Live Session 10-04-2021](https://invisiblenetwork.ai/learn/nptel/112105234/b4c675eb6deb-2) (Video) 47. [Live Session 04-05-2022](https://invisiblenetwork.ai/learn/nptel/112105234/2514b6ef6e92-2) (Video) 48. [Live Session 19-04-2022](https://invisiblenetwork.ai/learn/nptel/112105234/593a1a661d2f-2) (Video)