13
4.7
The scarifying drum
The heart of the scarifier is the scarifying drum. The assembly of the scarifying drum is very easy.
Each tool will be pushed on the axle together with spacers according to the enclosed assembly plans (Service
manual). The spacers ensure the necessary distance between the flails or cutters. The enclosed assembly
plans take into account the required lateral clearance of the flails or cutters, approximately 3 - 5 mm.
4.8
The scarifying flails and cutters
Through the use of a few different flails or cutters, and with a few
alterations, it is possible to adjust the Blastrac scarifier for the applications
or rather for the requirements of the specific surfaces. All the machines
work according to the principle of a loose tool seated on an axle. The
rotation of the scarifying drum generates a centrifugal force on the flails or
cutters which are kept by the lateral axles. The flails will be thrown
outwards as far as the clearance between flail and axle allow it. When
striking the surface, particles will be taken off of the surface and the flail
will rebound in the max inner position. So to avoid significant wear on the
axles as well as on the drum, it is required that the flails still have enough
clearance on the axle when striking the surface.
1
M6x20 countersunk head screw
2
Retaining plate
4
Drum
5
Drum axle
6
Cutter 5pt.
7
Spacer ring
Complete drum with
MPL42-1 milling cutters.
Order nr. MPD215L42SX
Complete drum with
MPL212 cutters.
Order nr. MPD215L212S
The tools must hit the floor by
centripetal force and not because
the axle pushes the tool
(see drawing below).
