The three types of sprockets on the next page are all suitable to drive sieve webs with low cam traction belts. (Types S and DS). They drive the belt in the rods, with or without supporting the traction belts. All sprockets are splittable (unless otherwise stated) and therefore easy to assemble.
Type G drives the belt in the cams as well as in the rods.
Types Z sprockets do not have a belt support.
Further you can find sprockets type N, suitable for driving high cam belts. These sprockets give a secure drive, without wear on the rods of the sieve web.
Sprockets type N can be supplied without a flange, so that they can be assembled to drive the centre belt.
Low profile belts (types S and DS) can also be driven by friction rollers.
Type K rollers have a flange and are not spittable. It is essential that the web is tightly held around the roller. If necessary, this can be done by fitting a pressure roller near the drive roller.
Rubber rollers (RR) are the most commonly used friction rollers. The rubber surface of the rollers give a good grip on the rubber traction belts. The rubber used on these rollers is of a wear resistant quality. Most rubber rollers have a cast iron core. To simplify the mounting we have several rollers in a splittable version.
To save weight and for use in wet conditions we have some rubber rollers with a nylon core. The flanges of these rollers are also out of nylon.
Besides our standard universal drive wheels we can also supply drive wheels to specific brands, for instance Grimme or Miedema.
