Q-System conveyors Q-System provides conveyors and transfer carts, available through Stiles Machinery, for effortless transportation of materials throughout your facility. The modular Q-System design allows for future expansion since existing equipment can be easily moved, reconfigured or extended. Since most Q-System solutions are built from stock components, there are quick delivery times. The high quality design of the Q-70 conveyor includes 2.75" diameter steel rollers with dust proof steel bearings and a load capacity up to 440 lbs. Frames and supports are manufactured with heavy angle profiles and feature a stationary or tiltable end stop at the end of the conveyor line. The tiltable end stop is a very simple, manual operation that allows the operator to roll material on and off the conveyor and the end stop springs back automatically to prevent additional stacks from rolling past the end stop. 100391820