Assembly and function
Cirrus 3/4/6000 DB2034 08.04
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4.1 Seed hopper and seed metering
The metering roller of the metering system (Fig. 49/2)
meters the seed from the seed hopper (Fig. 49/1) into
the airflow of the injector sluice (Fig. 49/3).
The air flow delivers the seed through the seed tube to
the distributor head (Fig. 49/4) and to the sowing
coulters (Fig. 49/5).
Fig. 49
4.2 Metering rollers
The seed metering system should be equipped with different metering rollers,
depending on the seed to be sown, namely with normal, medium fine and fine metering
roller (see chapter 4.2.1 to chapter 4.2.3).
The metering rollers are driven either
• by a star wheel via the Vario gearbox or
• by an electric motor (full electric metering).
The seed rate depends on
• the metering roller used in the seed metering system and
• the drive rev. speed of this metering roller.
4.2.1 Normal metering roller
The normal metering roller (Fig. 50/1) is supplied as
standard and is used following table (Fig. 78).
Fig. 50