Komatsu 825TX

The ultimate thinning machine

Komatsu 825TX

Komatsu 825TX is the thinning specialist that is powerful yet compact. Low weight, accessibility and power are examples of features that all contributes to long-term productivity.


Tracking frame

With a tracking frame the tracking deviation is decreased by 50%. That makes the machine easier on the forest floor as it leaves narrower tracks at its minimum turning radius, enabling the operator to take narrower routes between trees. A more agile machine also reduces the risk of damage to standing trees when manoeuvring in tight spaces. 

Thinning gate and Thinning bunks

The load area has been optimised for thinning with a special gate and special bunks. Both the gate and the bunks are angled 5 degrees inwards at the top to be as agile as possible in tight spaces. This reduces the risk of hitting standing trees when the machine sways from side to side in uneven terrain.

Excellent visibility in all directions

In thinning, it is extra important that the driver has a good overview of both the surrounding forest and where the machine is in relation to each individual tree. That is why the visibility in the Komatsu 825TX, , as in all Komatsu forwarders, is excellent in all directions - as well over the hood and down towards the wheels as over the load space and tree tops. This allows the driver to feel safe not to damage any remaining stock.

Powerful engine for great productivity

We have a brand new engine installation conforming to the latest emission legislation (Stage V). It also offers you many other advantages, such as an all new AdBlue system, a new exhaust system and hydraulic tappets.

New, slim hood design

The new hood design for the smaller forwarders is more streamlined, with a modern shape. It has the same feeling as the bigger forwarders but in a smaller format.

A crane that makes the job easy

Our forwarder cranes have a unique design and are 100% optimized for Komatsu forwarders. The well-matched combination of machine, crane, hydraulics and grapple provides a forwarder with high productivity and good reliability. The design of the cranes involves a minimum of protruding parts, for example our design of the telescopic arm, which helps to protect the remaining stock in thinning. The hoses are highly protected thanks to the ProTec link, which provides higher reliability.


Bogie lift advanced

If the forwarder is operating aslant or over an obstacle, the operator can press down the front bogie’s rear wheel on the downhill side
This compensates the tilt to a certain extent and keeps the cab more upright, which increases both manoeuvrability and operator comfort.





A. Width

With 600/50x22,5 tyres: 2 600 mm (8'6")

B. Length, total

9 380 mm (30'9") (with shortest rear frame)

C. Length, front axle to middle joint

1 900 mm (6'3"), 2 150 mm (7'1") with tracking frame

D. Length, middle joint to rear axle

2 900 mm (9'6"), 2 650 mm (8'8") with tracking frame

E Transport height with hoses and tyre compression

3 800 mm (12'6")

E. Transport height

3 800 mm (12'6") (hoses included and with tire compression)

F. Ground clearance, at steering coupling

580 mm (1'11")


Stated dimensions are nominal and may vary slightly depending on production tolerances and choice of equipment.

Approximate weight

From 14 580 kg (32,143 lb)

General information

AGCO Power, 4-cylinder diesel engine with turbo and intercooler. EU Stage V (Europe), EPA Tier 4F (North America)

Stroke volume

4,9 l (1.3 gal)


127 kW DIN at 1 800 rpm.


750 Nm at 1 500 rpm

Fuel Tank

145 l (38.3 gal)

Gross load

9 000 kg (19,842 lb)

Bunk area

3,9 m² (42 sq.ft)


Komatsu 105F


7.7 m (25’ 4”) / 9.5 m (31' 2'') /10 m (32' 9'')

Gross lifting torque

103 kNm (75,969 lb-ft)

Gross slewing torque

28,7 kNm (21,170 lb-ft)


G121 and slewing dampened link MPB.


Komatsu G28


280 l/min (74 gal/min) at 2 000 rpm


24 V

Battery capacity

2 x 140 Ah


2 x 100 A

Driving Speed

0 - appr. 25 km/h (0 - appr. 15.5 mph)

Tranctive Force

150 kN (33,721lbf)

General information

The specifications describe possible equipment, not which equipment is standard or optional. Standard and optional equipment varies between countries. Your sales representative has an up-to-date list of what is included. Weights are based on the equipment specified in the basic specification. Specifications and designs are subject to alteration without prior notice.

Our customers

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