The McCloskey SF50 portable feeder stacker features variable speed to prevent material from building up in the hopper, which contributes to controlled flow, according to the company. It is powered by a 74-horsepower Caterpillar engine, and can produce up to 500 tons per hour. It has a 50-foot main conveyor with a 40-inch-wide belt. Discharge height can be adjusted to up to 6.5 meters.
The unit has 3.5-meter tracks and can maneuver around job sites. For transport, the SF50 can be compacted and moved on a low loader, or loaded in a 40-foot cube container. It has a hydraulic folding heading section.
Power options include dual power, diesel/hydraulic, electric/hydraulic, diesel electric, and diesel with genset.