slew gear? bearing?
 

I am planing a truck mounted crane and am wondering what I could use as a turntable, or slew? I do not have the gear or skills to machine my own gears.

I was going to use the head off a grinder.
http://www.steelrats.com/builds/crane/grinder_head.jpg

Will it be strong enough?

I was thinking of using a Lazy Susan bearing maybe?. Bicycle gears and chain?

What do other people use for their cranes or excavators?

Re: slew gear? bearing?
 

Check this type of bearing. These thin bearings would work nicely for modern style cranes and excavators.
http://www.ebay.com/sch/Business-Ind...:MEFSRCHX:SRCH

Re: slew gear? bearing?
 

Look at Izzul's komatsu build, he had a neat bearing/gear combo.
Hope this helps.
Cheer's, Neil.