Special situations on site require special drives. For automating roller shutters in garages, workshops and warehouses, we generally recommend our MDF direct-mount drives for direct mounting. However, sometimes there is not enough space to install a MDF, or the hanging weight is too heavy for this drive. In such cases, our KD sprocket drive is the right choice! It is particularly suitable if space is limited or if the door or gate is very heavy.
KD drives have a special base for extremely secure installation.. They are suitable not only for new doors and gates, but also for retrofitting existing door/gate systems. These drives deliver from 70 Nm to 1650 Nm. All KD drives feature an output speed of 24 rpm, independent of the size of the drive. Thanks to the sprocket ratio , the torque of the drive is multiplied accordingly in order to be able to lift or lower the hanging load.
A KD drive is usually located slightly below the winding shaft of the door and is normally fixed in place in a tensioning bracket in order to tension the roller chain. The motor bracket is located either on the wall or on a steel joist. In any case, the drive must be fastened well enough to withstand extraordinary forces.
KD drives feature indirect power transmission via a roller chain between the drive and the door shaft. Due to this, our KD drives generally have no integrated safety catch. Therefore, in the case of a sprocket (KD) drive, the opposite side of the door must always have a separate safety catch installed as fall protection .
All components, such as the KD drive, winding shaft, hanging weight and the correctly selected safety catch, must be matched to each other. For controlling the roller shutter, we recommend our external control unit: the CS 320 from Marantec.
Custom versions, such as additional voltages and frequencies, different output speeds, higher protection classes (e.g. ATEX version for facilities where gas and dust are processed) and hollow shaft diameters are possible. Feel free to contact us!
Operating manuals for our drive systems and products on safety instructions, installation, commissioning, operation, and maintenance can be found in our search for installation manuals.