Drive Location 1
The head drive is located on the discharge end of the conveyor and pulls the transport medium, e.g. the belt.
This is the most common, safest and most affordable drive position. If you have location restrictions, you can
also install a head drive on the infeed end for use as a rear drive (pushing). In this case, however, you must
provide adequate pre-tension and prevent the transport medium from getting kinked.
Lower belt drives, which are also called centre drives, can be installed in various locations below the transport
level. The primary application for these drives is reverse operation (reversible conveying direction), since the
transport medium is always pulled, preventing the problems that arise when the belt is pushed. You can achieve
fixed installation lengths by selecting the design with a tensioning roller in the centre drive. Since two snub
rollers are typically used, this drive is also known as an omega drive. A further benefit of this drive is the option
to install knife edges on both the infeed and discharge ends for transferring small products.
Internal drives with a drum motor produce small obstructing edges, making them particularly popular for
applications with limited installation space. They are also popular in clean environments, since they exhibit low
particle emissions and have few surfaces on which dirt can deposit.
In the most commonly used indirect drives, force is transferred using a chain or timing belt. This additional
option to adjust the transmission ratio allows you to achieve very fine speed increments and compensate for
alignment errors. With servo and stepper motors, a timing belt can be used to dampen the abrupt, jerky starting
With a direct drive, the motor is connected directly to the drive shaft, offering a compact and low-maintenance
Our standard product range also includes a variety of different stock equipment motors from well-known
manufacturers. These gearmotors, consisting of asynchronous AC motors as standard or DC motors, combined
with a Spiroplan, helical-worm or helical gearbox, meet efficiency class II and IP 54. Custom motors,
servomotors, UL-CSA approval and multi-range motors are also available as options.
The maximum conveying speed depends on the motor selected, the load on the belt, the operating mode
and other factors. The speeds provided here are nominal values and may deviate due to the speed tolerances
of the motors (up to ± 10%). For indirect drives using chains or timing belts, the tolerance tends to be even
higher, at up to 20% above the nominal speed. Higher speeds are also achieved when the system is operated
on a 60 Hz grid, for example in the USA. If you need a precisely defined speed, this can be accomplished with
an mk reglomat.
The mk reglomat lets you control the conveyor speed within a range of 1:7 (10–70 Hz), assuming an
alternating current and the nominal speed at 50 Hz. For internal drives (drum motors), the adjustment
range is 1:3 (20–60 Hz). With direct current, the range is 1:6 (0.25–1.5 A or 0.5–3 A).
Information on Conveyor Technology