Bearings

History of ball bearings

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19810009866_1981009866.pdf


Manufacturing of a ball bearing
http://www.bearingsindustry.com/manufacturing.pdf

Journal bearings
http://www.bearingsindustry.com/aboutbearing/jb.htm

Gears - Materials

Gears materials list
http://www.agroengineers.com/gears/Gear-Materials.shtml

Similar list is given in Gears chapter of Pandya and Shah.

Gear materials, properties and manufacture
Google book

http://books.google.co.in/books/about/Gear_Materials_Properties_and_Manufactur.html?id=x17JAPZnDvQC

Cams and Camshafts in Automobiles

What does a cam in car engine do?
http://wiki.answers.com/Q/What_does_a_cam_in_a_car_engine_do

What does it mean when a car has dual overhead cams?
http://auto.howstuffworks.com/question562.htm

How a car engine camshaft and variable valve timing works?
http://www.2carpros.com/articles/how-camshaft-variable-valve-timing-works


Construction of Cams and Camshafts in Automobiles. Manufacturing process is indicated.
http://chestofbooks.com/crafts/machinery/Shop-Practice-V2/Gasoline-Automobile-Construction-Cams-Continued.html