Flow Racks & FIFO Trolleys for Line-Side Supply
Flow racks and FIFO trolleys load full containers at the back and pick from the front on gravity lanes, so stock rotates in strict first-in-first-out order and the next part always faces the operator — with replenishment never blocking the pick face.
Flow racks and FIFO trolleys use gravity lanes to keep line-side supply in strict first-in-first-out order: stock is loaded from the back and picked from the front, so parts rotate automatically and the next unit always presents itself to the operator.
Rear-load, front-pick
Each lane is a slightly inclined roller or wheel track. A replenisher loads full containers at the back; as the operator removes one from the front, the next rolls forward into place. Loading and picking happen on opposite sides, so replenishment never interrupts the line.
Why FIFO flow racks help lean lines
- Automatic rotation — no expired or aged stock, ideal for dated or shelf-life parts.
- Golden-zone presentation — the next part faces the operator at the right height.
- Separated replenishment — loading at the back never blocks the line.
- High density — deep lanes hold many units in a small frontage.
Front-facing, FIFO presentation is a classic lean line-feed technique promoted by the Lean Enterprise Institute, and safe manual picking follows OSHA materials-handling practice.
Related reading
Pair flow racks with sequenced delivery — see line-side & sequencing racks.
Build a flow rack or FIFO trolley
HAOFU designs custom flow racks and FIFO trolleys for line-side supply. Explore our material handling trolleys, or tell us your parts and takt for a flow solution.
Frequently Asked Questions
- What is a flow rack?
- A flow rack has slightly inclined roller or wheel lanes: full containers are loaded at the back and gravity rolls them to the front, where the operator picks — keeping stock in first-in-first-out order.
- How does a flow rack ensure FIFO?
- Because it is loaded from the rear and picked from the front, the oldest stock always reaches the pick face first, so parts rotate automatically in strict first-in-first-out order without manual sorting.
- What is the difference between a flow rack and a normal shelf?
- A normal shelf is loaded and picked from the same side (last-in-first-out unless managed), while a flow rack separates loading and picking and uses gravity lanes for automatic FIFO rotation and front-facing presentation.
