41
Roller for fine seeds
The rollers for fine seeds consist of cell discs,
spacers and drive shaft.
In order to avoid malfunction when sowing
fine seed, the cell rollers are completely pre-
assembled in the factory.
Rollers for fine seeds
Rollers fine seeds
The rollers can be assembled with one or two
cell discs.
The use of two cell discs on the roller doubles
the delivery rate.
Cell discs are available with displacements of
3.5 cm³, 5 cm³, 10 cm³ and 25 cm³.
During sowing only the cell discs in the roller will
rotate, the spacers are stopped from rotating by
stops on the housing
Adjusting the sealing lip
A defective sealing lip or an incorrectly
assembled supporting plate causes
metering errors during sowing.
¾
The sealing lip must not be torn or damage
- replace the sealing lip at least 1 x per year.
¾
Insert the side cover with the sealing lip into
the metering housing. The sealing lip must
have full contact with the rotor and should be
able to generate approx. 1 mm pre-tension.
Sealing lip
The retaining plate for the sealing lip is
asymmetrically divided.
With all normal and fine seeds the wider side
must face towards the roller.
In case of disturbances with coarse seeds such
as maize, beans etc. both the retaaining plate and
the sealing lip can be replaced by a wider design.
¾
Take out the rotor.
¾
Insert the side cover with the new sealing lip,
tighten the sealing lip only to such an extent,
that it can still be moved in axial direction.
¾
Move the lip, so that it projects approx. 1 mm
into the roller recess.
¾
Take off the side cover, do not move the lip
any more and tighten it.
¾
Assemble the side cover, check the setting
once again and reassemble roller.
Size
cm³
Cell shape / cell size
Number
of cells
3.5
half-round, radius 4 mm
10
7
2 cell discs 3.5 cm³
20
5
Groove depth approx. 19 x 3 mm
12
10
2 cell discs 5 cm³
24
10
Groove depth approx. 23 x 5 mm
12
20
2 cell discs 10 cm³
24
25
half-round, radius 7 mm
12
approx. 1 mm
