*myagriexpo

JOBO SR75

Product catalog summary

Main Dimensions and Specifications
The JOBO SR75 is available in two models: Jumbo and Combi. The base machine weight ranges from 330 kg to 430 kg. Both models have a fell diameter of 40 cm and a delimbing diameter ranging from 35 cm to 3 cm. The saw bar/chain measures 50/54 cm with a 2mm, .404 specification. Oil requirements vary between 60-120 l/min, and hydraulic pressure is set at 190-200 bar. The stroke length is 75 cm, with a feed force of 35/22 kN for Jumbo and 35/23 kN for Combi. The speed of stroke is 0.75 m/sec, with roll feed speeds of 2-3.5 m/sec for the Combi model.

Main Components
Both models feature electronic saw limiters and optional stump treatment. They include three moving knives, standard length and diameter measurement systems, and volume calculation via CAN-MID. The JOBO CAN CCD controller allows for fine-tuning based on oil flow and temperature, with simple species and length preselection.

Control System Features
The JOBO CAN MID system offers advanced measuring and control capabilities, operating on Linux with a user-friendly interface. It supports operating voltages of 9-32 VDC and temperatures from -20 to +60°C. The system includes a 7-inch QVGA LCD display, CAN 2.0B interface, and a 44-pin AMP connector.

Measurement Systems
Length measurement is achieved through a stroke-based sensor with 5 cm intervals, enhanced by a standard measuring wheel for accuracy. Diameter measurement uses an absolute sensor with a resolution of 12 bits, ensuring reliable performance without moving parts.

Delimbing Knives
The knives are optimized for stems of 15-25 cm but can handle diameters from 35 cm to 3 cm. Made from Hardox steel, they are pressure-controlled and adjustable via display, ensuring minimal hose movement.

Saw Limiter and Control
An electronic saw limiter prevents overcutting, enhancing safety and efficiency. The saw motor operates at 6000-10000 rpm, with a chain speed of up to 25 m/sec, requiring 45 kW of power. Feed and return pressures are regulated to optimize performance.

Feed Rolls
The Combi model includes welded feed rolls made from high-strength steel, designed for trees with few branches. The rolls support heavy trees in MultiGrip position, with a roll diameter of 220 mm and hydraulic motors of 200 cc, achieving speeds over 3 m/sec.

Catalog excerpts

Open the catalog to page 1

Open the catalog to page 2

JOBO ST7S Combi / Jumbo Main dimensions • Matten inom parentesen ar for ST75 Jumbo • Suluissa olevat mitat ovat ST75 Jumbon mitat • Measures within parentesis are for ST75 Jumbo • Die Angaben in Klammern beziehen sich auf die Jumbo-Version Syketec Ltd, (C) 2022 - Syketec Ltd reserves its rights to make changes to the product and its documentation

Open the catalog to page 3

Specification Specification Weight, base machine Fell diameter Delimbing diameter Saw bar/chain Oil requirement Hydraulic pressure Stroke length Feed force, 040/32 mm Speed of stroke Roll feed Syketec Ltd, (C) 2022 - Syketec Ltd reserves its rights to make changes to the product and its documentation

Open the catalog to page 4

Open the catalog to page 5

Harvester JOBO ST50-scope selection Specification Saw limiter Stump treatment Moving knifes Feed rolls Length measure, stroke Length measure by roller Diameter measure Volume calc. (top/middle) JOBO SR75 Jumbo Electronic Option 3 pcs Standard Standard Standard CAN-MID JOBO SR75 Combi Electronic Option 3 pcs Option Standard Standard Standard CAN-MID Syketec Ltd, (C) 2022 - Syketec Ltd reserves its rights to make changes to the product and its documentation

Open the catalog to page 6

Measurement system CAN-CCD JOBO CAN CCD is the controller for all functions of the harvester head. The operator can fine tune functions all depending on actual oil flow and temperature. The selection of species and length preselection are simple by means of menu's and buttons. Technical features: • Operating voltage • Operating temperature • LCD display • Frame, aluminium • Interface • Real time clock This system can be built in two separate units (as in picture) or in single unit panel. Installation space shall determine which unit type to choose. Syketec Ltd, (C) 2022 - Syketec Ltd reserves...

Open the catalog to page 7

SYKETEC f ? Control system features Specification JOBO SR75 Jumbo JOBO SR75 Combi Select operation mode Feed to preselection Select species Length selection Multi stem/ Multi grip selection Volume calculation Crane controls Internal diagnostic Production recording F1 - stroke Automatic Six (6) preselections Six (6) lengths CAN-MID CAN-CCD/MID CAN-CCD/MID CAN-CCD/MID F1 - F4, COMBI Automatic Six (6) preselections Six (6) lengths With rolls CAN-MID CAN-CCD/MID CAN-CCD/MID CAN-CCD/MID Syketec Ltd, (C) 2022 - Syketec Ltd reserves its rights to make changes to the product and its documentation

Open the catalog to page 8

Measurement system CAN-MID JOBO CAN MID is the more advanced measuring and control system built on high quality hardware with sophisticated features. The operating system Linux provides calculation power and easy to use menus to adjust all functions and even follow-up of produced volumes. Technical features: • Operating voltage • Operating temperature • LCD display • Frame, aluminium • Interface • Connector Real time clock, 4 - video inputs This system can be built in two separate units or in single unit panel (as in picture) . Installation space shall determine which unit type to choose. Syketec...

Open the catalog to page 9

Open the catalog to page 10

Open the catalog to page 11

Measurement methods All JOBO harvester heads include length measure taken from the stroke. Length sensor is calculating length with 5 cm intervalls. More accurate measurement is achieved with the standard measuring wheel. Technical features: • Measuring wheel diam. 80mm (L=26cm) • Spring loaded • Magnetic (HALL) sensor, 32 pulses/turn • Theoretical accuracy 0,7 cm The measuring wheel is counting forward and backward as it follows the tree stem. Measuring wheel can be retrofitted. Syketec Ltd, (C) 2022 - Syketec Ltd reserves its rights to make changes to the product and its documentation

Open the catalog to page 12

Open the catalog to page 13

Delimbing knives The knife profile is fitted to the optimal performance on stems of 015 - 25 cm, but is still performing delimbing well from 35 cm down to abt. 3 cm. All knives are movable. The top knife is spring loaded in order to follow small bends on the stems. All knives are made from wear resistant (Hardox) steel. Main knives are pressure controlled with own propo pressure reducing valve at abt. 120-150 bar. Pressure is varied depending on the operating mode and it is adjustable from the display. The main knife cylinders (2pcs) are mounted in a fixed position which ensures minimum movement...

Open the catalog to page 14

Open the catalog to page 15

Diameter measurement All SR75 harvester heads are prepared for diameter measuring. The measuring transducer is placed in the shaft end of left main knife. As its signal is magnetically transferred there are no moving parts making the system really reliable. Technical features: • Absolute sensor (HALL type) • Magnet 020 mm, sensing 2-4 mm • resolution 12 bit, 180° • Output 0,5 - 4,5V • Operating voltage 5-30 VDC • Operating temperature -40 - +85°C • Protection class IP67 Thanks to the sensor type (absolute) knife always knows in which position it is (angle). The measurement result can be calibrated...

Open the catalog to page 16

Open the catalog to page 17

Saw limiter A electronic saw limiter is standard on all SR75harvesters. The limiter is connected to the diameter measurement and it is adjusted so that saw will stop at a position of abt. 1/3 of width of the saw bar. This is a valuable function if the saw bar is not visible when felling (it is often hard to see what is behind the tree stem). This function also minimizes the risk of saw bar getting beyond the saw cut of the stem and getting stuck or accidentally hitting a stone or nearby standing tree. Syketec Ltd, (C) 2022 - Syketec Ltd reserves its rights to make changes to the product and its...

Open the catalog to page 18

All Syketec Oy Ab catalogs and technical brochures

JOBO ST50
22 Pages
JOBO ST75C
2 Pages