If you are studying for a university theory exam , Jalaluddin is sufficient. If you are designing a real product or studying for GATE, buy the PSG Data Book .
Note: If you have a specific link or more accurate author name (e.g., Jalaluddin Ahmed, Jalaluddin M. from a particular publisher), I can refine this essay. In the meantime, I recommend using verified sources like the PSG Data Book or Lingaiah’s book, which are available in many engineering libraries and through legal e-book platforms. Machine Design Data Book By Jalaluddin Pdf
Many autonomous colleges subscribe to digital libraries like or Delnet . You may find the PDF there for free with a student login. If you are studying for a university theory