You can Goole this product and there are several companies that sell a variety of products depending on the door and its weight. If you have a standard r size and application CSH Hardware sells a pre-fab unit with hinges and everything. I have done some research on this for some clients and might be able to help further if you tell us the application.

http://www.cshardware.com/

We used a commercial Rixson center-hung pivot hinge on this bookcase. Almost every situation where you have pivoting bookcase door will have unique factors including side & overhead clearances, trim conditions and aesthetic goals. We recommend working with your cabinet fabricator to choose a hinge that is applicable to your unique situation.

If side & overhead clearance is flexible, would you said center-hung hinge is the easiest to be install?