| Light-duty manual handling | 300–600 mm | 25–38 mm | 50–75 mm | Up to 25 kg | Up to 150 kg per conveyor section | Galvanized steel or PVC rollers; gravity operation; sealed bearings | Manual transfer to 12 m/min | Small cartons, totes, parcels, and plastic containers |
| General carton conveying | 400–800 mm | 38–50 mm | 75–100 mm | 25–50 kg | Up to 300 kg per conveyor section | Galvanized steel rollers with low-friction bearings; gravity or powered drive | 5–25 m/min | Corrugated cartons, bins, and packaged products |
| Medium-duty warehouse conveying | 500–1,000 mm | 50–60 mm | 75–125 mm | 50–80 kg | Up to 500 kg per conveyor section | Steel rollers with 2.0–3.0 mm wall thickness; crowned or grooved rollers for tracking | 10–30 m/min | Heavy cartons, storage bins, and standard pallets |
| Powered accumulation conveyor | 500–1,000 mm | 50–76 mm | 75–150 mm | 60–100 kg | Up to 800 kg per conveyor section | Driven steel rollers; chain, belt, or line-shaft drive; low-noise bearings | 10–45 m/min | Cartons requiring buffering, accumulation, or controlled release |
| Heavy-duty pallet conveying | 800–1,300 mm | 76–89 mm | 100–150 mm | 100–250 kg | Up to 1,500 kg per conveyor section | Heavy-wall carbon-steel rollers; chain-driven design; reinforced frames and bearings | 6–25 m/min | Loaded pallets, drums, large crates, and industrial containers |
| Extra-heavy industrial conveying | 1,000–1,500 mm | 89–108 mm | 125–200 mm | 200–400 kg | Up to 2,500 kg per conveyor section | Heavy-wall steel rollers with machined sprockets; high-capacity bearings; welded frame | 3–18 m/min | Steel components, machinery bases, dies, and exceptionally heavy pallets |
| Corrosive or washdown environment | 400–1,000 mm | 38–76 mm | 75–125 mm | 25–100 kg | Up to 500 kg per conveyor section | Stainless-steel or corrosion-resistant rollers; sealed hygienic bearings; sloped frame for drainage | 3–20 m/min | Food containers, chemical-resistant totes, and washable packaging |
| High-temperature service | 400–1,000 mm | 50–89 mm | 100–150 mm | 50–200 kg | Up to 1,000 kg per conveyor section | Heat-resistant steel rollers and high-temperature grease; avoid standard PVC components | 3–15 m/min | Hot castings, heat-treated parts, and products leaving ovens |
| Inclined or declined conveying | 400–900 mm | 50–76 mm | 75–125 mm | 40–150 kg | Up to 700 kg per conveyor section | Powered rollers or brake rollers; side guides and positive load control required | 5–30 m/min | Cartons, totes, and pallets moving between elevations |
| Selection note: For stable conveying, use at least three rollers under the shortest load at all times. Size the conveyor for the maximum operating load, include starting and impact forces, and confirm roller, shaft, bearing, frame, and drive ratings with the final equipment supplier. |