Komatsu XT445L-3

High Productivity, Reliability and Durability

Komatsu XT445L-3

The Komatsu XT445L-3 boasts a modern forestry cab that features a state-of-the-art digital control system and superior ergonomics. Combined with multiple boom, arm & saw head options, powerful swing torque and tractive effort, and a robust undercarriage, the XT445L-3 delivers high productivity, reliability and durability.


Gull-Wing Style Engine Hood

Gull-Wing Style Engine Hood

Gull-wing engine hood folds down providing an elevated service platform.
Hydraulically-actuated with backup manual hand pump. Robust design provides a secure footing with 500 lbs (227 kg) load capacity.
Offers excellent visibility and access to all engine-related components.
Provides full access to engine oil filter, air filter, fuel filters, coolant, DEF fluid and hydraulic filters.

Relocated Operator's Cab - Increased Track Visibility

Relocated Operator's Cab

State-of-the-art cab relocated to the left side. Tracks are now highly visible through the side door and boom side windows
- Larger door window has an “L-shaped” flat bottom
- Engine/pump compartment is set-back; top 2/3 portion is indented rearward

Rugged New Undercarriage

Rugged New Undercarriage

Rugged new Komatsu undercarriage provides longer service life due to:
- Heavier 8.5“ track chain links have a thicker bushing strap which is stronger at resisting "twist”
- Track rollers & idler bushings are made of high-density material
- New track sliders have a reduced angle providing 30% lower contact
- Final drives use a new triple labyrinth seal to protect from mud-packing
- Crawler Box improvements include:
~ Removeable track guards have larger roller side openings to reduce mud packing
~ Additional set of steps has been added to each crawler box

75% Greater Lift Capacity

75% Greater Lift Capacity

Significantly increased lift capacity at full reach vs. XT-3 due to improved boom & arm geometry and larger cylinders.
Provides better balance between boom lift & arm holding capacity.
Broad line of Quadco high speed disc saws available.




Komatsu XT445 technical drawing
Machine Weight (No Attachment)

Base Machine: 68,180 lbs (30926 kg)

General Information

Operating weight includes standard feller buncher boom, feller buncher 4-bar arm with tool tilt, 1/2 tank of fuel, rated capacity of lubricants, coolant, operator and standard equipment. Cutting attachment not included.


Peak Torque 1000 lb-ft (1356 Nm) @ 1500 rpm


Cummins QSC8.3 Tier 33


Water-cooled, 4-cycle, direct injection


Turbocharged and charge air cooled

No Of Cylinders

In-line, 6-cylinder


4.49" (114 mm)


5.31" (135 mm)

Piston Displacement:

505 in/3 (8.3 liter)


Peak - 300 HP 224 kW @ 2000 rpm / Rated - 280 HP 209 kW @ 2200 rpm


Side-by-side aluminum core type, engine coolant and charge air

Implement Pump

Variable displacement piston. Maxflow - 91 gpm (344 liter/min)

Swing Motor

Fixed displacement bent axis piston


Separate swing-out cooler with thermostatically controlled fan

Track Drive Pump

2-Variable displacement piston pump Maxflow - 57 gpm (216 liter/min)

Attachment Pump

Dependant on Hydraulic system selection: 45cc - 28 GPM (106 liter/min) / 71cc - 45 GPM (170 liter/min)

Travel Motor

2-Variable displacement piston

Drive Method

Hydrostatic, independent closed loop

Max Tractive Effort

74,315 lb (33710 kg)

Max Travel Speed Hi

3.3 mph (5.3 km/h)

Max Travel Speed Lo

1.3 mph (2.1 km/h)

Parking Brake


Steering Control

Foot pedals

Service Brake


Boom Reach to Pin

Maximum: 21'6" (6530 mm) / Minimum 7'6" (2290 mm)

Cutting Swath

13'11" minimum cut to maximum cut (no attachment)

General Information

High quality, high strength alloy steel box section design. Feller buncher boom, feller buncher 4-bar arm, designed for 20-22" high speed disc saws.

At 10" (3.05 m)

23,693 lb. (10747 kg)

At 15' (4.57 m)

16,450 lb. (7457 kg)

At 20' (6.10 m)

10,205 lb. (4629 kg)


75 ampere, 24V


24V master disconnect

Work Lights

11 LED type

General Information

IQAN-MD4 Digital Control System


7" (18cm) LED color touch screen

General Information

Standard and extra equipment are market-dependent and vary between countries. The specification describes possible equipment, which is either standard or optional. Stated weights are based on standard equipment.


2-Cylinder, 4-way heavy duty


27° / 51%


5° / 9%


20° / 36%


Continuous rotation


Heavy duty, 22-bolt double row bearing

Drive Method


Swing Speed

0 - 8.5 rpm

Swing Torque

58,400 lb-ft (79.1 kNm)

Swing Brake


Parking Brake



HD boxed center frame structure with flat bottom and storage trunk

Track Frame

Box-section, bolted

Track Type

Grease sealed

Track Pitch

9" (230 mm)

No of Shoe Links

43 per side


8 per side

General Information

Komatsu XA233-2 Bar saws, Komatsu Harvesting Heads, 21 & 22" High Speed Disc Saws.Check availability through your local dealer.


Final Drives: Komatsu with spring-applied oil released track brakes. Hydraulic track adjuster. Track Chain - grease sealed Komatsu 9" pitch chain, 43 links per side. Track drive: Closed loop. Track motors - 2-speed VDPP auto shift with variable speed control. Track rollers: 8 per side. Track shoes: 24" (600 mm) single grouser. Track sliders. Travel Pedals.

Guards and Covers

Muffler with blanket. Rubber debris skirt.

Engine and Related Items

Air cleaner, dry type with air intake pre-cleaner. Engine compartment service light, Engine interface monitoring system, Engine fan: auto reversing with guard, Fuel water separator, Radiator: side-by-side aluminum core jacket water and hydraulic.

Electrical System

Alternator: 75 ampere 24V, Batteries: 2 x 12V 950 AH. Electrical system master disconnect switch, Electrical joystick/foot pedal controls.


Track Drive: 2 x VDPP, 57 GPM (216 liter/min). Implement: 1 x VDPP, 91 gpm (344 liter/min).


Wide 8'4" gauge 10'4" (3140 mm) overall width. Forestry carbody with track roller frame with removable track shoe support guides. Storage Trunk.


Load sensing hydraulic system. Hydraulic oil cooler, auxiliary with temperature sensing fan. Hydraulic oil refill pump; 24V. Hydraulic tank vacuum pump.

Operator Environment

ROPS/FOPS/TOPS/FOG/OPS/WCB/Oregon OSHA certified. Automatic air conditioner, heater & defroster with pressurization and 6 adjustable vents. 2-12V Outlets. Adjustable cellphone holder. Magnetic and moveable coat hook. Fold down/up cup holder. Literature box with cover. Lockable door. Stanley® vacuum bottle & lunch box cooler. Ventilation fan. LED interior dome light. Radio: AM/FM Weather Band stereo with iPod/MP3 input jack. Seat: Adjustable high back suspension, 3" retractable seat belt. Back-up alarm.

Other Standard Equipment

Continuous Rotation. Sure Grip Control Handles. Emergency escapes: 3 - Front window, side door and roof hatch. Fire extinguisher 10 lb.-Hand held. Instrument panel with switches; LED warning lights and engine stop button. Swing bearing: HD 22 bolt single row. Swing motor: 56cc. Windows: Polycarbonate, Front window 1.25" (32mm), Left & right window 0.5" (13 mm), Skylight window 0.5" (13 mm), Rear window 0.5" (13 mm). 11 LED Work lights.


14'2" (4320 mm) Standard length, 16'1" (4902 mm) Extended length

Track Shoe

28" (700 mm) single grouser

Other Optional Equipment

Carrier rollers, Track sliders, Fire Suppression (Automatic dry chemical), 120V Block Heater, Charge oil relief heater, Espar® fuel-fired jacket water and hydraulic oil pre-heater, Pump drive oil cooler, 71cc Auxiliary pump, KAB vented and heated seat.