Flat belts are commonly used as a drive for roller conveyors, as they have a simple design and require very little maintenance.
A roller-to-roller drive with a flat belt is not sensible.
Tangential drive
The flat belt runs underneath the roller conveyor and is pressed against the rollers by pressure rollers. The pressure rollers are positioned at a spacing of at most four conveyor
rollers. The pressure rollers also return the flat belt.
On accumulation conveyors, the height of the pressure rollers has to be adjusted extremely precisely so that the flat belt can slip past the pressure roller, without causing
above-average wear and tear.
The flat belt must be pre-tensioned by a tensioning device to approx. 1 %. The belt is generally driven by an AC gear motor, located underneath the roller conveyor.
The drive power is in many cases transmitted more reliably if the loop angle of the flat belt on the drive drum on the AC gear motor can be increased with narrowing wheels.
The conveyor rollers require no special drive heads and smooth tubes can be used.

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