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Syketec OY AB,  produce a range of stroke and combi harvester heads designed for  smaller base units. Ideally suited to mini-forwarders, smaller excavators and tractor based units. Syketec products are produced in Finland.

The stroke harvester JOBO ST  is developed for economical Harvesting  in first thinnings and bioenergy crops. Reliability and good delimbing results  are key feature. Simplicity and low weight are major attributes. The use of high tensile strength materials gives the possibility to achieve low weight.

Syketec jobo ST50 Bambi harvester head

                            Stroke harvester JOBO ST50 Bambi compact and light weight
This small stroke harvester head is specifically developed to be fitted on small to medium size base machines. Thanks to is low weight and compactness it can be mounted on a Mini-forwarder, 3 ton excavator or any tractor based crane.

    
Technical data
Felling diameter                                   Recommended max. 30 cm
Delimbing                                               25 cm down to abt. 2 cm
Working pressure                                 160 - 180 bar
Working mode                                      Stroke, 50 cm, speed 0,75/1,0 m/s
Delimbing force                                    15/22,5 kN at 180 bar, oil flow 30 - 60 l/min.
Bar and chain                                       Bar 14/16 in, chain 1,6/2,0mm , .404in
Length x height x width                      105x 110 x 75 cm
Weight without oil                               205 kg
Voltage                                                  12 or 24 VDC

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Standard features

  • CAN-bus control system

  • Saw limiter, mechanical

  • Automatic feed and reverse

  • Length measure from stroke (+/-5cm)

  • Preselection of lenths (6 x 6 lengths)

  • Ready for stump treatment

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Selectable options

  • Measuring wheel length

  • Diameter measurement

  • Pump for stump treatment

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Alstor 840 pro withSyketec Jobo ST50 harvester head

Stroke harvester JOBO ST50 Combi, compact, strong and fast


This small stroke harvester is specifically developed to be fitted on small to medium size base machines. It is now also fitted with feed rolls. With the rolls it has four specific operation modes, combined, rolls only, multi stem and multi grip.

Syketec ST 50 Combo harvester head

Technical data
Felling diameter                      Recommended max. 30 cm
Delimbing                                 25 cm down to abt. 2 cm
Working pressure                   160 - 180 bar
Working mode                         Stroke, 50 cm, speed 0,75/1,0 m/s
Roll feed                                   Abt. 2 m/s at 80 l/min
Delimbing force                      15/22,5 kN at 180 bar, oil flow 30 - 60 l/min.
Bar and chain                          Bar 14/16 in, chain 1,6/2,0mm , .404in
Length x height x width          113x 125 x 87 cm
Weight without oil                   265 kg
Voltage                                     12 or 24 VDC

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Standard features

  • CAN-bus control system

  • Saw limiter, mechanical

  • Automatic feed and reverse

  • Length measure from stroke (+/-5cm)

  • Preselection of lenths (6 x 6 lengths)

  • Ready for stump treatment

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Selectable options

  • Measuring wheel length

  • Diameter measurement

  • Pump for stump treatment

Basic stroke harvester JOBO ST75D
Technical specification
Felling diameter                     Recommended 30 cm
Clear delimbing                     25 cm down to abt. 2 cm
Working pressure                  160 - 180 bar
Working method                   Stroke, 75 cm, speed 1 m/s
Delimbing force                    22,5 kN at 180 bar, oil flow 40 - 60 l/min.
Saw bar and chain                Bar 14/16 in, chain 1,6/2,0mm , .404in
Length x height x width       1550 x 750 x 750 mm
Weight without oil                245 kg
Voltage                                   12 or 24 VDC

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Standard features

  • Saw limiter, mechanical

  • Automatic feed and reverse

  • Length measure from stroke (+/-5cm)

  • Preselection of lenths (6 x 6 lengths)

  • Ready for stump treatment

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Options available

  • Measuring wheel length

  • Diameter measurement

  • Pump for stump treatment

  • Valve board ready for feed roll assembly

  • Siemens LOGO or CAN-bus control system

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​JOBO SR75 Combi
Very strong stroke harvester which also can be fitted with feed rolls. Thanks to four specific operation modes the feed can be with stroke, with rolls alone or combined. Strong feed with stroke and fast feed with rolls

Syketec Jobo ST75 D harvester head
Syketec Jobo ST75 Combi harvester head

Technical details
Felling diameter                                 Recommended max. 40 cm
Delimbing                                            35 cm to 2 cm
Working pressure                               170 - 200 bar
Working modes                                   Stroke, 75 cm, feed 0,75/1,0 m/s
Feed rolls                                             Feed n. 2-3,5 m/sec, 80 - 120 l/min
Delimbing force                                  35/22,5 kN at 180 bar, flow 80-120 l/min.
Bar and chain                                      Bar 50/54 cm, chain 2,0mm , .404in
L x H. x W                                             140x 150 x 95 cm
Weight without oil                              430 kg
Voltage                                                 12 or 24 VDC

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Standard features

  • CAN-bus controls

  • Electronic saw limiter

  • Auto feed and reverse

  • Length measure (+/-5cm)

  • Length pre-selections(6 x 6)

  • Stump treatment rediness

Options

  • Measuring wheel with magnetic sensor(+/-3cm)

  • Diameter measure. and volume calculation

  • Stump treatment pump

  • Inbuilt tilt directional valve

Syketec ST 75D Combi Combined

JOBO ST75D Combi Combined stroke and roller feed

A major advantage of the stroke harvester is its strong feed force also at low oil flows. However, strong feed is not always needed and then stroke feed may feel slow.
Based on customer feedback Syketec developed a roller feed option which can even be retrofitted to the basic stroke harvester JOBO ST75C/D, this is then type designated JOBO ST75D Combi.

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Combi version has four operating modes:
F1 - Combined stroke and rolls
F2 - Only rolls
F3 - MultiStem
F4 - MultiGrip

Under combined operation rolls can be selected during stroke and is only returning back to stroke if the feed button is released. Roller feed is feeding at about. 2,5 m/sec at full flow (80 l/min), this is more than double the speed of stroke feed.

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Standard features & options

  • Length measurement with measuring roll

  • accuracy +/- 3 cm

  • Diameter measurement (option)

  • volume calculation

  • Weight with rolls 295 kg

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JOBO ST75DEx  excavator featured JOBO ST75DEx

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Thanks to its low weight the harvester JOBO ST75DEx can be fitted to excavators in the range 4 - 10 tons. Much depending on the oil capacity and availability of auxiliary hydraulics the harvester may be differently configured: 

1. If two auxiliary lines are available for rotator and tilt, the harvester can be configured as for tractor use
Main line to the harvester head typically from the rock breaker line

2. The harvester may hold directional valves for both rotator and tilt
In this case the roller option is not available

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Consult Syketec for more options and possibilities for applying JOBO harvesters to your excavator machine.

Syketec JOBO ST75 D EX harvester head

JOBO VH75 Combi Tractor Mounted processor

The Syketec tractor mounted  processor is specifically designed for use  where cranes are not commonly available fitted to tractors. Our specially designed tractor processor comes with its own crane. It is designed to carry our harvester head. With this processor you can fell, de-limb and cut to length, while sitting in the tractor. In difficult terrain or to increase the reach the hydraulic winch is handy.

Syketec VH75 combi tractor mounted processor

Control systems

Syketec control systems are built in two basic configurations. The panel version holds both the display and the related controls in one compact unit. Sometimes a suitable place for mounting of the panel is difficult and then our split configuration (as per picture) may be a better option. Depending on the required features the size of the control panel may also be in two different sizes. The smaller unit CCD with a 3,7in display (shown here) and the larger MID with a 7in colour display. Both systems are CAN-bus based systems connected to the harvester head with a 7 x 0,75mm² PUR cable. The JOBO CAN MID also as standard holds joystick controls both for mA and voltage controlled (eg. Danfoss) systems.

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Control system JOBO CAN MID
JOBO CAN MID is an advanced control and measuring systems built with high quality components and sophisticated control features. The base is a Linux display unit which provides excellent and easy to use menus to fine tune the harvester functions and to follow up the production, even at volume level.

Technical features
Operating voltage                                               9 - 32 VDC
Operating temperature                                     -30 -  +70 °C
LCD display                                                           7in WVGA color (800x480)
Case, aluminium                                                  IP67
Interface                                                                2 x CAN 2.0B, ISO 11898
Communication                                                   1 x USB
Video                                                                       2 x composite inputs
Real time clock

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Standard features

  • Internal diagnostics in real time

  • Automatic feed and reverse

  • Length measure from stroke (± 5 cm)

  • Preselection of lenths (6 x 6 lengths)

  • Joystick control (require additional CAN-module)

  • Four operation modes

  • F1 - Combined stroke/rolls

  • F2 - Rolls only

  • F3 - MultiStem™

  • F4 - MultiGrip™

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Options available

  • Length measure measuring roll  (± 3 cm)

  • Diameter measurement, volume calculation

  • Pump for stump treatment

  • Valve board ready for feed roll assembly

  • Panel mount or split mounting systems

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Control system JOBO CAN CCD
The standard control system is JOBO CAN CCD which provides all the required features to handle the harvester head in normal operation. It allows user to set specific timers to tune the behavior of the harvester head depending on oil flows and temperatures. To set the species and require pre-selected lengths is made easy through simple menu selections.

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Technical features
Operating voltage                                             9 - 32 VDC
Operating temperature                                   -20 -  +60 °C
LCD display                                                        3,5in QVGA color (320 x 240)
Case, aluminium                                               IP67
Interface                                                             CAN 2.0B, ISO 11898
Connection                                                        44 pin AMP Super Seal
Real time clock

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Standard features

  • Internal diagnostics in real time

  • Automatic feed and reverse

  • Length measure from stroke (± 5 cm)

  • Preselection of lenths (6 x 6 lengths)

  • Four operation modes

  • F1 - Combined stroke/rolls

  • F2 - Rolls only

  • F3 - MultiStem™

  • F4 - MultiGrip™

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Options available

  • Length measure measuring roll  (± 3 cm)

  • Pump for stump treatment

  • Valve board ready for feed roll assembly

  • Panel mount or split mounting systems

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Jobo CAN MID panel.jpg
Jobo CAN CCD Split mounting.jpg
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