To avoid getting too heavy abstinence for forestry machines and logging equipment, we hereby wish to present a sturdy harvester – The Rottne H21D equipped with a LogMax 7000C harvester head.
Rottne Industri AB
Rottne Industri AB, the small and independent forest machine manufacturer in south Sweden who has managed to stay in the founder’s family. In the 80’s and 90’s when Finnish concerns bought most of the machine manufacturers, Kockums, ÖSA, Mini Bruunett, Timberjack, Lokomo, SMV and some more, Rottne stayed on their own.
Already in 1968, they introduced a machine that would become one of the most famous brand names within CTL machinery – Rottne Blondin. “The Blond” was manufactured until 1988 in many versions; Forwarders, processors, harvesters, dumpers and probably more. It was a simple machine, based on a Ford tractor. The simplicity made it cheap to own as there were not many custom-made components involved.
However, by mid 80’s the technology race in the forest machine business had passed Rottne Industri AB, so they had to do something. And they did …
Today
Today Rottne is fighting in the major league among the large harvesters with the H21D. Except for the colors, there are no traces left from the Blondin. The Rottne harvester range is the H8, H11 and top of the line H21D.
The forwarder range contains no less than six models: F10, F11, F13, F15, F18 and F20.
You can read more about all the Rottne machines here.
Rottne H21D in figures
(Source: Rottne.com)
Length 9 233 mm (364”)
Length incl. crane 13 610 mm (536”)
Width 3 000 mm (118”)
Height 4 119 mm (162”)
Transportation height 3 722 mm (147”)
Ground clearance 690 mm (27”)
Weight, 6 WD 24 200 kg (51 600 lbs)
Weight, 8 WD 26 700 kg (56 880 lbs)
Engine John Deere 6090 HFC09, Power Tech PSS, Final Tier 4/FT4)
Output 227 kW (305 hp) at 1 700 rpm
Torque 1 351 Nm (996 lb ft) at 1 500 rpm
Cylinder volume 9,0 liters (549 in3)
Diesel tank 500 liters (132 US gal)
Transmission DS controlled, hydrostatic/mechanical with full capacity control. 3 gear steps. Manual differential locks.
Brakes 2-circuit electrically/hydraulically operated negative wet disc brakes. Automatic work brake. Spring-assisted parking and emergency brake.
Wheels
6 WD, front 750/45 x 30.5
6 WD, rear 700/70 x 34
8 WD 750/45 x 30.5, 780/55 x 28.5
Chassis
Type Articulated frame
Steering angle +/- 43o
Max steering torque 106 kNm (78 180 lb ft)
Horizontal angle +/- 24 o
Hydraulic system
Pump capacity, loader 298 liters (79 US gal) / 1 700 rpm
Working pressure, loader 3.0 – 25.0 MPa (425 – 3 625 psi)
Pump capacity, head 357 liters (94 US gal) / 1 700 rpm
Working pressure, head 3.0 – 30.0 MPa (425 – 4 350 psi)
Type Load-sensing system with double pumps, entirely separated from the transmission.
Degree of filtration 10 micron
Tank volume 217 liters (57 US gal)
Electrical system
Type 24-volt electrical system with CAN-bus technology.
Battery 2 x 145 Ah
Alternator 150 A
Machine control system Rottne D5
Bucking system Rottne Forester
Display 15”
Working lights 22 pcs
CAB
Type Spacious, vibration-proof safety cab. ISO certified.
Noise level 63 dBA
Swivels +/- 90 o
Tiltable 15 o, 14 o, +/- 11 o (front, back, side)
Climate system ACC
Crane
Type Parallel jib arm crane, RK 250, with tiltable swing base and 2,2-meter (7,2 feet) telescope.
Tiltangle forward 21 o
Tiltangle backward 20 o
Lifting torque 325 kNm (239 700 lb ft)
Angle of rotation 250 o
Reach 11 meters (36 ft)
Torque 62,4 kNm (46 020 lb ft)
Harvester head
Brand/Model LogMax 7000C
Feed rate 5,3 m/s (17,4 ft/sec)
Wheel opening 713 mm (28,5”)
Pruning diameter 40-50 mm (1,6-22,4”)
Cutting diameter 650/690/750 mm (26”/27,5”/30”)
Weight 1 627 kg (3 587 lbs)
Film
Here is a film about the H21D in action.
