Both gravity and powered roller conveyors move cartons on rollers, but they solve different problems. Choosing between them affects layout, controls and operating cost.
How gravity sections work
A gravity roller conveyor has no motor. Product moves because an operator pushes it or because the frame is set at a slight slope. It is quiet, needs no electrical supply, and is easy to extend, curve or move on castors. It suits buffer zones, temporary lines, loading bays and short transfers where throughput is modest. On long runs the required slope can become impractical, and flow control is limited.
How powered sections work
A powered roller conveyor drives the rollers by chain, O-ring belt or 24 V motorised roller, so cartons move at a set speed regardless of weight. Dividing the line into zones allows zero-pressure accumulation, indexing, and reliable feeding into scanners, weighers, sealers and sorters. It needs a motor, controls and an electrical supply matched to the destination country.
Roller selection matters in both cases
Roller diameter (commonly 38, 50, 60, 76 or 89 mm) and pitch are set by the smallest and heaviest load. The smallest carton should always span at least three rollers. Galvanised steel is standard for dry goods; stainless steel suits wet or washdown areas; rubber or PU lagging adds grip on inclines and smooth plastic totes. JINDA supplies both complete conveyors and replacement rollers.
A common mixed layout
Use powered zones where flow must be controlled, gravity sections as low-cost buffers and flexible links, and a telescopic conveyor at the vehicle. This keeps investment focused where control is actually needed.
Browse roller conveyors and conveyor rollers, or ask us to review your layout.
