The KHK Modular Belts are driven by means of sprockets; this positive drive allows for forward and reverse applications in both the In-line and Curved Conveyors. On the In-line Conveyors the belts are driven by means of a unique toothed nylon sprocket which can be mounted onto either a hexagonal shaft or a 30Ø round shaft. The sprockets, mounted both on the drive and tail shafts, have 10 teeth and a pitch circle diameter of 97.1mm (the outside diameter including the belt is 106.1mm). The unique positive drive is achieved by means of the sprockets, which engage the belting's ribs and hinges. This represents the enormous advantage of a non-slip, non-slide, maintenance friendly system which requires no tensioning station or belt tracking equipment.
Due to the inward pressure of the belt created on the Curved Conveyors, we make use of flame hardened steel sprockets (as per illustration) for use on the heavy industrial belt. This increases the wear resistance needed in transporting goods at an angle. On the light industrial polypropylene belt, machined nylon sprockets are used for light load and low speed applications. Various sized sprockets are used according to the internal radius and belt width of the Curved Conveyor. The sprockets have 16 teeth which are mounted on a standard 30mm shaft and are fastened by means of a selok pin and grub screws. These sprockets can be replaced easily and mounted back onto the existing shaft.
The drive and tail pulleys are mounted onto the Conveyor body using special sealed bearing housings. On the In-line Conveyors a 30mm bearing on either end of the shaft is used within a B6 bearing housing (as per illustration). The Curved Conveyor drive and idler shaft make use of a 20mm bearing within a B4 bearing housing (as per illustration) on the inner side of the Conveyor. The outer side of the shaft makes use of a 30mm bearing within a B6 bearing housing.
