... 4. Shock-proof. JQ Belt Conveyor Roller JQ has produced conveyor rollers, conveyor idlers (axes, bases), conveyor spare parts (bearing housings, ... dust sealing) from 1992 and it has become a major conveyor roller manufacturer in Turkey, Middle East, Russia ... 3,500mmOur range of belt conveyor rollers includes belt snubbing, belt tensioning and support rollers for belt conveyors. Precision bearings are ...