Conveyor Calculators
Size the drive for belt, roller and chain conveyors. Each calculator gives pull, torque, rpm, motor power, a standard IEC motor size, a motor pole comparison and a suggested gearbox ratio, with every formula shown.
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Belt Conveyor Calculator
Belt pull, pulley torque and rpm, motor power and gearbox ratio for flat or inclined belt conveyors.
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Roller Conveyor Calculator
Chain driven live roller (CDLR): rolling resistance, chain losses, drive torque and motor size.
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Chain Conveyor Calculator
Drag or slat chain on wear strips: carry and return side pull, accumulation, sprocket torque and motor size.
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How to pick the right calculator
Choose the calculator that matches how the product is carried, because that decides where the friction comes from.
Belt conveyor: a continuous belt sliding on a slider bed or running on rollers. Use it for cartons, bags and loose items, including inclines up to about 18° with a smooth belt.
Roller conveyor (CDLR): every roller is driven by a chain loop from its neighbour. Use it for pallets, totes and rigid cartons on flat or gently sloping lines; the pull includes roller-to-roller chain losses.
Chain conveyor: one or more drag or slat chains sliding on wear strips. Use it for pallets, heavy or hot parts and accumulation lines; the pull includes the return side of the chain.
Quick comparison
| Type | Typical μ | Best for |
|---|---|---|
| Belt on slider bed | 0.25 – 0.30 | Mixed products, inclines, quiet running |
| Belt on rollers | 0.05 | Long or heavily loaded belts |
| Live roller (CDLR) | 0.03 – 0.05 | Pallets, totes, rigid cartons |
| Chain on wear strip | 0.15 – 0.30 | Pallets, heavy parts, accumulation |
Need help sizing a drive?
Send your conveyor details and I can help select the motor, gearbox and chain drive.