Profile: Welker Bearing Co. is QS9000-TE certified and offers a comprehensive line of plane bearing products and technologies. We produce cast bronze and sintered bronze bearings in over 1000 standard sizes as well as bar, disc and plate stock. We produce a line of lubrication free linear slides, gib assemblies and maintenance free shot pin units. These assemblies incorporate steel or aluminum components bonded with filled P.T.F.E to give strength and lubricity. We also offer patented, compact pneumatic lifter that is freestanding, symmetrically reversible, rigid and can lift overhung loads.