Read
igubal Pressfit Spherical Bearings
by igusuk
Lots of information about pressfit spherical bearings - Easy to fit, extremely cost-effective, chemical-resistant, light weight, high strength For more information see http://www.igus.co.uk/wpck/default.aspx?PageNr=2503&c=gb&L=en&wt.mc_id=CALAUK