I want to purchase dc motor 3 hp continues duty 230 v dc power supply and 4800 rpm form my treadmil. please suggest. i am in chandigarh India.

Check here with greenmaster motors
http://www.partsfortreadmill.com/catalogsearch/result/?q=greenmaster

and also here for treadmill help in general
http://www.treadmillsrepair.co.uk/
http://www.partsfortreadmill.com/repair/repair.htm