3D CAD Models - conveyor. Conveyor rollers Series 4100 - Idlers - Pallet Gravity Rollers with welded Steel Bearing Plates. Kraus. Conveyor roller Series 2600 - Idlers - Pallet Gravity Roller with pressed Steel Bearing Plates. Kraus. Conveyor/Belt Hopper control units - Steuergeräte. Rhein-Nadel-Automation. 4615, 4616 - Conveyor Tube Inserts.