How to choose a cross-belt sorter: six questions before you commit

A cross-belt sorter is a major capital purchase. The right choice comes down to six concrete questions —not brand brochures. Answer them honestly and the configuration almost designs itself.

1. What is your peak-hour throughput —not the daily average?

Sorting systems are sized by the hour you must clear, not the average day. A line rated for 8,000 pcs/h runs comfortably at peak; one sized to the daily average will choke every evening. Express hubs often need 6,000–10,000 pcs/h; regional DCs 2,000–6,000.

2. What is your parcel mix?

Soft poly bags, irregular shapes and mixed-weight parcels are exactly what cross-belt belts handle gently —each parcel rides on an independently driven belt. If your mix is mostly rigid cartons and space is tight, a narrow belt sorter may be more cost-effective.

3. How many destinations (chutes) do you need?

The number of sorting exits drives loop length and machine cost. A regional hub may need 40–00 chutes; a national cross-border hub can exceed 1,000. Plan for future growth —adding chutes later is far cheaper than buying a bigger loop.

4. What footprint can you spare?

Loop sorters are circular and space-efficient for high throughput; linear sorters fit along walls and into existing conveyor corridors. Measure your available floor area, including ceiling height and access for infeed/outfeed conveyors.

5. Does it integrate with your WMS?

Any serious vendor offers WCS over Ethernet/OPC UA with WMS integration and full parcel traceability. Reject systems that cannot report induction, scan and discharge events back to your host.

6. What is the total budget, including installation?

Quoted machine price is only part of the cost. Budget for installation, commissioning, training, conveyors and spare parts —and compare payback, not sticker price. Most e-commerce and express projects above ~3,000 pcs/h pay back within 12–4 months.