TEST REPORT Forwarder Komatsu 860.4

TEST REPORT
Forwarder Komatsu 860.4
Published by:
OWNER OF TEST CERTIFICATE:
Applicant/Distributor:
Komatsu Forest GmbH
Allmendstraße 12
D-75189 Vöhringen
Internet: www.komatsuforest.de/
Manufacturer:
Komatsu Forest AB
Tegelbruksvägen 1
S-907 04 Umeå
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)
Spremberger Strasse 1 Telephone: 06078-785-0
D-64823 Groß-Umstadt Fax: 06078/785-50
E-mail: pruefung@kwf-online.de
Internet: http://www.kwf-online.de

Forwarder Komatsu 860.4
Evaluation – Review
Test item Test results Evaluation
Forwarder class 2 Payload 10 – 14 t
chief application field forwarding logs between 2 – 6 m long also in difficult terrain
Loading very good
crane construction
measured lifting power at 4 m reach 17.7 kN, maximum reach 9.5 m;
timber can be loaded from the front of the machine
crane control 10 operator settings can be stored, 1 factory setting + +
stability
lateral stability is provided with empty bunk and fully loaded crane at
maximum reach (Factor >2),
transportation total height per axle 3.91m +
Transport good
calculated load rating 14000 kg (= 79.0 % of net weight) o
weight load utilization
driving speed
very good relationship between bunk, pay load and weight distribution
(103 evaluation points)
off-road 8 km/h
road 20 km/h
off-road capabilities off-road capability coefficient 0.30 -
Ergonomie very good
noise
vibration
cab design
attenuating forces
visibility
Leq = 68 dB(A) + +
A (8) = 0.32 m/s² +
spacious, very comfortable cab with good air conditioning + +
very low + +
good view of wood bunk and around the machine +
workspace illumination provides good and glare-free illumination for most of the workspace +
work safety EuroTest Certificate SMP, Sweden
Ecology good
fuel consumption
average 9 l/ machine operating hour (specific consumption 218
g/kWh)
ground impact maximum ground pressure: 5.2 bar (o); wheel load: 50.7 kN (- -) -
operational fluids
ready-filled with bio-degradable hydraulic fluid WGK 1 (water hazard
class), several hazardous substances with a WGK > 1
emissions complies with Euro-Guideline 97/68 EC level III A +
Economy
maintenance (incl.
refuelling)
approx. ¼ hour daily, approx. ½ hour weekly
power within limits for this forwarder class
cost (without wages)
Special features
according to calculation scheme 44 EUR/ operating hour
(based on 2000 operating hours/year)
hydraulic adjustment of headboard – horizontally and vertically,
Crane tip with protected hose guides, 2 rear view cameras
+ + = very good; + = good; o = satisfactory; - adequate; - - = inadequate
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+
+ +
+ +
++
o
o

Short description
Figure 1: Machine sketch and crane work area diagram
• frame constructed front and rear bogie, decentralized articulated joint, interleaving joint with 2 doubleaction
hydraulic cylinders; front and rear bogie axles, 8 equal sized wheels
• hydrostatic transmission, two step range gear (can be changed while stopped) and power divider, each
axle with permanent transmission; rear drive release
• decentralized articulated joint, interleaving joint with hydraulic interleaving joint brake (tooth rack brake)
• test tyres: Nokian TRS-LS2 710/45-26.5 16 PR
• digital integrated control system Maxi Forwarder, 10 programmable settings
• length (without crane) 9920 mm
• transport height (flat bed trailer): 3906 mm
for road driving: 3906 mm
• width (maximum) 2960 mm
Zuladung [kg]
16000
14000
12000
10000
8000
6000
4000
2000
Valmet 860.4
0
0 1000 2000 3000 4000 5000 6000 7000 8000 9000
Sortimentslänge [mm]
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Maximale Zuladung
Maximale Vorderachslast
Maximale Hinterachslast
Minimale Vorderachslast
Laubholz weit
Nadelholz weit
Nadelholz eng
Laubholz eng
Ende Rungenkorb
Figure 2: Weight distribution diagram Figure 3: Wood bunk
Min.
Akt.
Max.
Gross lifting moment (kNm)
66,0
126,0
151,0
0 20 40 60 80 100 120 140 160
Figure 4: Comparison between the current test machine and the minimum
and maximum values from the 12 machines tested to date in the same
engine power class.

Axle loads and payload
unloaded *
Softwood
loaded **
Hardwood
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permitted according to
German traffic
legislation
permitted according to
manufacturer’s declaration
gross weight (kg) 17720 31720 31720 18000 35500
payload (kg) 14000 14000 14000
front axle load (kg)
(%)
rear axle load (kg)
(%)
10140
57
7580
43
11042
35
20678
65
12990
41
18730
59
* measured weight of the fully refuelled machine without operator
** calculated values according to loading scheme for maximum utilization (see chapter 3.2)
Softwood, fresh, sort length 5.7 m, load volume ca. 17 cubic meters
Hardwood, , fresh, sort length 4.0 m, load volume ca. 12 cubic meters
Engine
10500 14500
7700 21000
Sisu Diesel 660 U 12544, water cooled 6-cylinder Common-Rail diesel engine with turbo charger and charge cooling.
Approved for RME/FAME according to DIN EN 14214 and ASTM D6751 (max. 20 %). Engine complies with emmision
guideline 97/68 EG Level III A
capacity 6600 cm³
power nominal engine
speed
2200 1/min 145 kW
max. torque engine speed 1500 1/min 800 Nm
torque increase 28,0 %
specific fuel
consumption
nominal engine
speed
2200 1/min 239 g/kWh
engine speed 1500 1/min 218 g/kWh
average fuel consumption under working conditions 8 - 10 l/ machine
operating
hour
fuel tank volume 160 l
Min.
Akt.
Max.
Engine power (kW)
90,0
145,0
172,0
0 50 100 150 200
Figure 5: Comparison between the current test machine and the minimum and
maximum values from the 12 machines tested to date in the same engine power class.
Min.
Akt.
Max.
Fuel consumption (l/operating hr)
6,6
8,0
10,0
0 2 4 6 8 10 12
Figure 6: Comparison between the current test machine and the minimum and
maximum values from the 12 machines tested to date in the same engine power class
(see also chapter 7.4).

Hydraulics work circuit
open load sensing single circuit hydraulic system with adjustable reciprocating pump
hydraulic pump Parker P 2145 (145)
capacity at 2000 rev/min
(max. 2200 1/min)
input power at 2000 rev/min
at 1500 rev/min
Hydraulic
pressure
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0 – 290
0 – 145
126
94
l/min
cm³/rev
maximum 26 MPa
released 3 MPa
Fuel tank capacity joint tank with transmission circuit 100 l
Hydraulics transmission circuit
electronically controlled hydrostatic transmission
hydraulic pump Sauer Danfoss H 1 P 147
capacity at nominal engine speed
(2000 1/min)
input power (installed
power)
at 2000 Rev/min
at 1500 Rev/min
0 – 294
0 – 147
hydraulic pressure maximum 43 MPa
hydraulics engine: Sauer Danfoss BR 51
211
158
kW
kW
l/min
cm³/rev
released 3 MPa
absorption volume 32,2 – 160,9 cm³/rev
tank capacity: joint tank with work circuit 100 l
The machine is approved for operation with specific bio-degradable hydraulic fluids
Crane
pedestal mounted on the rear bogie longitudinal frame stays just in front of the articulated joint between the headboard
and cab, comprises a colomn and slewing mechanism as well as a boom and jib with a two step telescoping mechanism;
Protec crane tip with protected hose guide ("Protec"-System)
type CRF 11 C
maximum reach (incl.2-step telescope) 9.5 m
gross lifting torque * 126 kNm
lifting torque at 4 m reach 17.7 kN
slewing torque 23.2 kNm
turning area (left/right) 360
°
maximum working pressure 26.0 MPa
required amount of hydraulic fluid * n.s. l/min
boom weight (with rotator and grapple) *
* manufacturer’s declaration
2268 kg
Min.
Akt.
Max.
Maximum reach (m)
7,2
9,5
10,1
0 2 4 6 8 10 12
Figure 7: Comparison between the current test machine and the minimum and
maximum values from the 12 machines tested to date in the same engine power
class.
kW
kW

Grapple and rotator
Manufacturer Valmet
attached to jib with rotator and 1 swing brake and slewing axle
endless rotator Valmet/Indexator G 121 V 19
weight (with/without rotator) * 326/270 kg
enclosure area n.s. m 2
maximum grapple opening 1820 mm
length of tongs 520 mm
* manufacturer’s declaration
Wood bunk
4 formed bunks (welded box profile) with 8 steel tube stakes with inserted, bolted (removable) extensions; last 3 bunks are
bolted to rear bogie frame; hydraulically operated front bunk attached to headboard
load area length 4805 mm
load area cross section 5.8 m²
longitudinal movement gate and 1st stake pair 623 mm
maximum payload *
* manufacturer’s declaration
14000 kg
Min.
Akt.
Max.
Maximum bunk area length (m)
4,0
4,8
5,0
0 1 2 3 4 5 6
Figure 8: Comparison between the current test machine and the minimum and maximum
values from the 12 machines tested to date in the same engine power class (see also
chapter 7.4).
Min.
Akt.
Max.
Bunk area cross-section (m²)
3,1
5,0 5,8
0 1 2 3 4 5 6 7
Figure 9: Comparison between the current test machine and the minimum and
maximum values from the 12 machines tested to date in the same engine power
class.
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Spare parts supply, handbooks and service
good,
time required for daily
maintenance
time required for
weekly maintenance
Cab
proprietary safety cab tested according to ISO 8082 (ROPS), ISO 8083 (FOPS) und ISO 8084 (OPS)
operator seat 180 ° swivelling operator seat KAB 500 Air, highly adjustable, load-sensitive automatic
pneumatic suspension, with dampening; swivel unit with electro-magnetic brakes; with
lumbar support
Comments / Evaluation Complies with
standards
cab size and design generous and spacious cab; fully lined, comfortable with good visibility,
provides just satisfactory storage spaces; a cool box would be a
welcome feature
cab climate useful heating with continuously adjustable ventilator (audible at higher speeds), air
conditioner
control elements all important control elements and the control system display (only in
work position) are easy to reach and within the field of vision; sensible
control elements, well marked apart from crane controls
levelling none
work field illumination the lateral and near-crane workfield illumination is very good; illumination of front and rear
workfield is incomplete and therefore only satisfactory; crane lights provide good illumination
of grapple; Xenon lights would improve illumination; some unavoidable shading in the wood
bunk area
visibility large window area provides good visibility of workfield from cab. The view of the wood bunk
is only satisfactory since it is somewhat restricted by the upper edge of the headboard (even
when lowered) and covering of the crane column (2 hose packets); unavoidable restriction of
visibility when wood bunk is fully loaded. Good all-round visibility, satisfactory visibility of the
load area; load dependant visibility restrictions must be taken into account; machine is
equipped with two cameras to improve visibility.
noise low noise level 68 dB(A) yes
vibration A (8) = 0.32 m/s² yes
storage space on the
machine
approx. ½ hour
approx. 1 hour.
maintainability access to maintenance points: good; access to crane: satisfactory
maintenance scope according to schedule and necessity
operator’s manual succinct, clear and well structured, not quite up-to-date
spare parts list well illustrated and structured; all spare parts are easy to find
training customer receives briefing on delivery, 1-day additional training available on request, further
training available on request
2 relatively small storage spaces available left and right at the front of the machine
storage space in the cab sufficient for manuals and first-aid kit; limited space provided for personal belongings; oilaccident
set attached inside cab
7/9
yes
yes

Machine cost and calculation basis
Price for tested version 265000 €
workload operating hours/year 1500 2000 2500 total service life [operating hours] 21000
recovery period (years) 14 10.5 8.4 repair cost factor 0.7
€/MAS €/MAS €/MAS
recovery 12.60 12.60 12.60 interest rate [%] 8.0
repair and maintenance 8.80 8.80 8.80 Transport costs [€]/ operating hour 2.00
fuel and lubricants 9.20 9.20 9.20 Additional costs [€] 12985
interest rate 7.10 5.30 4.20
transport, driving 2.00 2.00 2.00 technical work productivity
others 8.70 6.50 5.20 13 cubic meters/operating
hour
machine costs 48.40 44.40 42.00 within the forwarder class 2
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Additional equipment (not tested)
Hydraulic oil fill pump, fuel fill pump, vacuum pump, clam bunk equipment, alternative tyres (600/55-26.5)
alternative profiles (FK) alternative tyre manufacturer (Trelleborg), bogie lift (ready prepared for mounting),
crane tilting mechanism, swivelling last bunk, frame extension (hydraulically operated, 450 mm extension),
alternative crane lengths, hydraulically operated front blade (fixed push blade), branch deflector to protect
engine, Xenon work-field illumination, cab glass in different hues and tints, windscreen wipers for lateral
windows, central lubrication. Automatic fire extinguishing system
Test
Remaining requirements: none
Recommendations: The available exterior storage space should be increased, plastic components
should be marked for recycling, customer should be informed about the use of
bypass filters
Test Institute
Kuratorium für Waldarbeit und Forsttechnik e. V., Groß-Umstadt
Author
Günther Weise and Lars Nick, KWF-Central, Groß-Umstadt
KWF-utility test
Test-No. 4993, valid until 30.06.2016
According to the test regulations, the applicant is entitled to display the test mark on machines of this
type and to use the certification for advertising purposes.
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