Forestry forwarder 845-1

Overview
Designed for thinning and light clear‑cutting, the Komatsu 845-1 is a 12‑metric‑ton class forwarder offering adaptive hydrostatic mechanical transmission, high tractive force and a long‑reach crane. The machine balances load capacity options with maneuverability and service accessibility for demanding forestry operations.

Key features

• Multiple load capacity options: 12, 14, 16 or 20 metric tons with several frame lengths.
• Powerful, long‑reach cranes with high lifting and slewing torque; standard ProTec crane tip and Komatsu G28 grapple.
• Computer‑controlled hydrostatic mechanical transmission with transfer gearbox (high/low) and ergonomic keypad/foot controls.
• High tractive force (170 kN) and transmission that adapts to load and terrain.
• Komatsu Comfort Bogie axles, V‑shaped frames and high portal offset for improved ground clearance and maneuvering.
• Spacious cab with wide visibility and ergonomic controls; optional Comfort Ride suspension.
• Service‑friendly: electronically powered tilting hood and grouped filters for maintenance access.

Options and accessories

• Bunk wideners and hydraulic height‑adjustable stakes
• Rear/front view cameras and computer touchscreen
• Electric fuel fill pump and heavy‑duty stacking blade for ground/stump leveling
• Cold‑weather diesel heater system (engine coolant, hydraulic oil and batteries)

Resources

• Spec sheet (PDF)
• Press release
• Financing information

Technical specifications

• Model: 845-1
• Brand: Komatsu
• Gross load capacity: 12 000 kg (26,455 lbs)
• Bunk area: 3.5 - 4.8 m^2 (37.7 - 51.7 sq. ft)
• Approx. weight: 16 890 kg (37,236 lbs)
• Engine power: 140 kW DIN at 1 900 rpm (188 HP @ 1,900 rpm)
• Torque: 800 Nm @ 1,500 rpm
• Engine type: AGCO POWER, 4‑cylinder diesel with turbo and intercooler, EU Stage V / EPA Tier 4F
• Displacement: 4.9 L
• Fuel tank: 145 L (38.3 US gal)
• AdBlue® tank: 120 L (31.7 gal)
• Transmission: Computer‑controlled hydrostatic mechanical transmission; transfer gearbox (2 positions high/low); direction and speed via armrest keypad and foot controls
• Driving speed: 0 – approx. 25 kph (0 – approx. 15.53 mph)
• Tractive force: 170 kN (38,218 lbf)
• Crane reach: 7.7 - 10 m (25 ft 3 in - 32 ft 10 in)
• Lifting torque, gross: 103 - 127 kNm
• Slewing torque, gross: 28.7 kNm
• Hydraulic system flow: 280 L @ 2 000 rpm
• Hydraulic oil tank: 128 L
• Hydraulic system: Single‑circuit load‑sensing with variable piston pump; dual return oil filters and hydraulic oil level warning
• Dimensions (examples): total length with shortest rear frame 9 380 mm; front axle to articulated joint 1 850 mm; articulated joint to rear axle (shortest) 2 900 mm
• Width (with tires): 600/55x26.5 tires: 2 620 mm; 710/45x26.5 tires: 2 850 mm
• Transport height (with hoses and tyre compression): 3 880 mm
• Ground clearance at steering coupling: 660 mm
• Electrical system: 24 V; battery capacity: 2 x 140 Ah
• Load area: FlexBunks on runners, movable; FlexGate full‑height gate (fixed or hydraulically maneuverable); compatible bunk widening kit (optional)
• Notes: Specifications describe possible equipment; standard vs optional equipment varies by country and are subject to change.