bearings, ball bearings, bearings for use in aerospace applications, bearing inserts, bearing seals, cylindrical bearings, lubricating bearings, mounted bearings, nonmetallic bearings, pillow bearings, roller bearings, sleeve bearings, spherical roller bearings, socket bearings, composite bearings, tools for installation of bearing; brakes and clutches for machinery, motors and vehicles; chains, chain elevators, chain elevator buckets, chain sprockets, metal and nonmetallic conveyor chains, double-flex chains, driving chains, engineered chains, lubricating chains, metal chains, nonmetallic chains, polymeric chains, power transmission chains, roller chains, silent chains, welded chains; conveyors, apron conveyors, apron feeders, belt conveyors, belt conveyor idler support rollers, bucket chain conveyors, bucket elevator, conveyor sprockets; couplings, composite couplings, elastomeric couplings, flexible couplings, flexible disc coupling, machine shaft couplings, magnetic couplings, roller chain couplings; gears, gear boxes, planetary gears, reducer gears, speed reducer gears; mechanical seals; spray nozzles.