A rack feeder (RBG) is an industrial truck that is moved in the aisle between two racks, usually on rails (VDI 2361). It consists of a chassis, one or two masts, a hoist and a load handling device. In the case of pallets, the load is generally picked up by a telescopic pair of forks, in the case of containers by means of a belt conveyor, pulling devices such as hooks, lassos or swivel arms or by a lifting table or shuttle. In the pallet area, rack heights of up to 55 meters can be achieved.
Narrow aisle stackers (VDI 3577) can be used to serve several aisles, as they are able to drive out of the aisle. Within the aisle, they are also guided via (guide) rails or guide wire. The operator platform is moved vertically with the load pick-up to facilitate operation at great heights. Narrow-aisle forklifts are used up to a height of around 14 meters.
See also forklift truck, warehouse, automated small parts warehouse.

Source: logipedia / Fraunhofer IML