Previously used steel carriers are too hard and can cause pressure marks and scrapes on the crop. In order to avoid this, we have developed sieve bar belts with rubberized drivers for the agricultural industry, which enable the gentle transport of the crops. The drivers are used in potato harvesters, for example.
The JÄGER GROUP offers individually adapted elastomer compounds for drivers and conveyor belts, which protect the crop. Furthermore, the light material also reduces the weight of the harvesting machines – the machines need less fuel and are therefore more environmentally friendly.
The RFL flight is an extruded rubber profile. A type designation is assigned to each RFL flgihts (e.g. RFL 50 LF). The number gives information about the height of the profile, measured from the middle of the member. The designation LF means that the driver is additionally provided with a lip on the upper side. The lip has a damping effect. The crop is thus protected from damage when falling onto the elevator belt.
The profiles are cut to length according to the order and can also be fitted with side wings on request. If the carrier is to be used for a gear wheel run, it must be secured against lateral slipping. This is usually done by attaching a wire clamp in a recess made for this purpose.
The MRF flights consists of rubber vulcanized onto a rod with a diameter of 8 or 10 mm. The drivers are available in two different heights:
60 mm height, measured from the top of the bar
80 mm height, measured from the top of the bar
The MRF flights are manufactured with side wings as standard. On request these side wings can be cut to the required strip width.
The length of the top and bottom side are always in a certain relation to each other. The minimum and maximum available lengths can be found in the table about MRF flights. If the carrier is required for a three-belt belt, a recess is provided in the area of the middle belt. The corresponding gear run has also been taken into account.
This category includes various designs ranging from simple flat bars welded onto a rivet rod to constructions in 2- to 6‑row sugar beet harvesters. The BR type is mainly used on sieve rod belts in sugar beet harvesters.
The basic construction is a tube which is mounted with oversize over two half rods. The driver version is mounted on this. The two half rods and the support rod are usually supplied in thermally hardened design. The metal bends and fingers can be welded onto the tube in any desired length, diameter and shape.
The BR type driver is available in two basic types:
BR 75 type
continuous tube with central clamping pin to prevent lateral displacement.
BR 77 Type
split tube fixed in the middle with a bolt.
The two half bars and the support bar can be rubberized to reduce the play between the bars, damp the tube and reduce the wear of the metal parts. All our types of drivers can be found in our catalogue.
The plastic flights are manufactured in a mold by means of injection molding. Due to the production method, each driver has a fixed dimension, only the plastic flights 645 (9 fingers) with a length of 645 mm can be shortened to the desired length. The plastic drivers have been developed to replace iron drivers on transfer belts in sugar beet harvesters. In addition to its light weight, plastic has the advantage of being able to withstand relatively high bending and pressure loads as well as shocks.
The plastic flights 460 (7 fingers) is made of hard and tough plastic and is usually used on a bunker unloading conveyor in a sugar beet harvester. This driver has a standard length of 460 mm. Depending on the number of drivers, the belts and the belt width, the following belt widths are possible:
2 x 60 mm
2 x 75 mm
3 x 60 mm
3 x 75 mm
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