Test Report

Test Report no. 5938
Test Report no. D-09.11
Test Report
KWF-Test Report no: 5326
Road grader for three-point attachment
Type “SWO 1”
Manufacturer and owner of the test certificate
Distributor in the of German Federal Republic:
WULLEMS Constructie & Plaatwerken B. V.
Haveneind 4
NL -6006 RW Weert
Road grader type “SWO 1“ – dated: July, 2011

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1. Evaluation - review
Road grader for three-point attachment, Type “SWO 1”
WULLEMS Constructie & Plaatwerken B. V., Haveneind 4, NL -6006 RW Weert
Test item Test result Evaluation
Chief
application
field
Road grader for maintaining loose road surfaces under
easy conditions. Mounted to rear three-point attachment on
agricultural tractors (requires at least 5 maintenance runs
per year)
Work speed
good
Driving speed of the carrier vehicle
Depending on road conditions and number of necessary
passes, between about 10 km/h and 20 km/h
+
Schlepper
For safe and rational operation a 4WD agricultual tractor
with front ballast is generally recommended.
For use on level ground, tractors with at least 60 kW are
sufficient. Tractors with at least 80kW engine power are
recommended for frequent working in cleared terrain.
Reliability and
durability
good
No defects or failures during the test period +
Handling
good
Operation Experience required 0
Physical strain
• Operator must take on unfavourable body posture to
look at the blades
• normal actuating forces
0
+
Assembly /
Maintenance
good
Assembly time Attachment and removal in less than 15 minutes 0
Maintenance effort low +
Work safety
Confirmed by GS-Test (DPLF)
Costs Costs per meter per maintenance pass, incl. operator and tractor 0.025 –
0.035 €
Evaluation range: ++ / + / o / - /-- (o = Standard)
Road grader Type SWO 1 – dated: July, 2011

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2. DESCRIPTION AND TECHNICAL DATA
Construction
Maintenance device for rear attachment to agricultural tractors.
Electro-hydraulic control, supplied by tractor hydraulic system
Welded construction made of sectional steel components:
1. 3-point hitch category 2 (ISO 730)
2. horizontal swivelling main frame with hydraulic telescoping blade carrier and
grader blade and
3. front v-shaped oscillating blade carrier with two grader blades for levelling the
central ridge between tracks,
4. as well as 2 lateral, oscillating rocking frames for attaching the 4 independent
hydraulically telescoping and swivelling blade carriers with grader blades
5. bolted stainless steel grader blades for profiling
2
1
4
3
Main measurements, weights and pressures
Length in transport position:
2550 mm
Width in transport position:
2500 mm
Height in transport position:
1250 mm
Largest offset, from attachment to lower link: hydr. adjustm: 2550 – 4550 mm
Overall weight
1250 kg
Max. hydraulic pressure
15.0 MPa
Road grader Type SWO 1 – dated: July, 2011

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Adjustability
Pulling device / main frame horizontal left and right adjustment in 2 steps ± 30°
Grader blade carrier arms
Hydraulically telescoping length adjustment
550 mm each
horizontal left and right swivel adjustment in 4 steps ± 60°
rear blade angle adjustment in 5 steps up to 30°
all grader blades oscillate ± 6°
max. operational width per pass
4.00 m
Work shield
Grader blade: Material: Chrome-manganese/vanadium-steel (Hardox 400)
Measurements: front 2 units 600 x 200 x 10 mm
centre 2 units 1200 x 200 x 10 mm
rear 1 unit 2000 x 200 x 10 mm
Additional equipment
None
Road grader Type SWO 1 – dated: July, 2011

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3. Test results
Application field and work procedure
This road maintenance is designed for use by forest enterprises and collectives
especially within the framework of a road maintenance cooperation
The practicality of the unit for small-scale enterprises and sideline farmer / foresters
depends on a sufficiently large road network and good cooperation with the contracting
body.
The grader is mainly suited for maintaining loose gravel road surfaces (optimal grain
size 0/15 - 0/35).
The device drags road surface materials, removes grass and herbs, and spreads road
materials in one pass. The 2 front v-shaped grader blades are especially designed for
levelling the central ridge between the wheel tracks. Several passes are necessary on
very rough roads requiring a high maintenance effort. The independent control of the
grader blades enable the operator to work just one side (left or right) of the road.
The work quality depends of the precise adjustment of the device.
The unit cannot be used for grading roads when maintaining extremely compacted
surface layers (re-profiling) or for road repair work.
Consequent road surface maintenance with this device, especially when carried out in
wet weather, significantly increases the lifespan of the road and reduces grass and
herb growth between road edge and embankment.
Performance:
The performance attained when using the road grader depends on the weather
conditions, the tractor (engine power class, working speed) and the width of the road or
the number of required passes across the road.
In a well-organised maintenance undertaking and using a 4WD agricultural tractor with
an engine power of about 80 kW, the unit is capable of maintaining about 4.000 m –
6.000 m of road with a heavy load surface consisting of loose materials, per operating
hour.
Required tractor
For safe and rational operation a 4WD agricultural tractor with front ballast is generally
recommended
For use on level ground, tractors with at least 60 kW are sufficient. Tractors with at least
80kW engine power are recommended for frequent working in cleared terrain.
Te relative large offset of the unit noticeably impairs the mobility of the machine.
The road grader can be attached using a quick-hitch.
Road grader Type SWO 1 – dated: July, 2011

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Availability, reliability, durability
The construction of the road maintenance device is solid and the durability is good. The
unit is well-designed and sophisticated.
The reliability is good. However, it is prudent to avoid soiling the control elements, in
order to ensure that the machine can be adjusted or fixed using normal forces.
There were no defects or failures during the test period. The durability of the surface
coating is good.
Ergonomics (operation – physical strain)
The operation of the grader is easy, however, the operator should have some
experience in using the device. The actuating forces for adjusting the grader blades are
normal. The actuating forces for controlling and adjusting the device during operation
are very low. Levers and buttons for the electro-hydraulic fine adjustment are located in
cab so that the device can be controlled while driving.
The operator must turn backwards frequently to check the blade carriers and work
quality, thus adopting an awkward posture, which is strenuous over a longer period of
time.
Assembly and maintenance
The grader can be attached to or removed from the tractor in less than 15 minutes.
The maintenance effort is low.
Stability
The design of the grader means that it can be safely placed on hard ground.
Arbeitssicherheit
The road grader Type “SWO 1“ was tested for work safety (GS-test) at the Deutsche
Prüfstelle für Land- und Forsttechnik (DPLF)..
Operator’s manual and spare parts list
Operator’s manual and spare parts list are included.
Survey results
The test results are confirmed by a survey among users.
Machine costs
Purchase price for unit (dated 12.2009)
without VAT from the manufacturer 27,000.-- €
Cost per meter per maintenance run incl. tractor and operator 0.025 – 0.035 €
Road grader Type SWO 1 – dated: July, 2011

4. Test
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Requirements / recommendations: none
BFW-Test (Austria)
The road grader WULLEMS Type “SWO 1“was tested and approved in a joint
effort in accordance with an agreement between the KWF and the BFW
.
FAT-Approval (Switzerland)
This test report is accepted by FAT in accordance with the ENTAM agreement
Test facility
Premises of the company Wullems, NL – 6006 RW Weert
Field test
Forestry enterprise in Bavaria
Author
Dipl.-Ing. E. Debnar, KWF-Central offices, Groß-Umstadt,
FPA-/DLG-test committee
KWF-test committee “Tractors and machines“ (Chairman: FD R. Brümmel)
KWF-utility value approval
Test no. 5326, valid until July 31, 2016
The applicant is entitled to display the test mark on machines of this type according to
the test regulations and to use the certification for advertising purposes.
This publication
was supported by the Federal Ministry of Consumer Protection, Food and Agriculture
and the State Forest Administrations
Kuratorium für Waldarbeit und Forsttechnik e.V. (KWF)
Forsttechnischer Prüfungsausschuss (FPA) Telephone: 06078 / 785-0
Spremberger Strasse 1 Fax: 06078 / 78550
D-64823 Groß-Umstadt eMail: fpa@kwf-online.de
Bundeforschungs- und Ausbildungszentrum für Wald, Naturgefahren und Landschaft (BFW)
Fachbereich Forsttechnik Telephone: 0043 / 7612 64419-0
Johann Orth Allee 16 Fax: 0043 / 7612 64419-34
A-4810 Gmunden eMail: nikolaus.nemestothy@bfw.gv.at
Deutsche Landwirtschafts-Gesellschaft e.V.(DLG)
Fachbereich Landtechnik – Prüfstelle für Landmaschinen –
Max-Eyth-Weg 1 Telephone: 06078 / 785-0 Fax: 06078 / 9635-
D-64823 Groß-Umstadt 90 eMail: tech@dlg-frankfurt.de
Forschungsanstalt Agroscope Reckenholz-Tänikon (ART)
Telephone: +052 / 368 33 52
CH-8356 Ettenhausen Fax: +052 / 365 11 90
eMail: : thomas.anken@art.admin.ch
Road grader Type SWO 1 – dated: July, 2011