Komatsu 931

Strong and Productive

Komatsu 931

The new Komatsu 931 is built for truly demanding logging. In several decisive areas it provides the benchmark for future needs of maximum production capacity, eco-friendliness and operator comfort – the most important of which are presented here.

Revolutionary 3-pump hydraulics

The 931's immense work capacity is much due to the brand new 3-pump hydraulics, split into dual circuits with separate pressure levels. The system is power-regulated against the diesel engine and offers a class-leading hydraulic capacity of 584 l/min. Unique pressure and flow optimization enables you to work considerably faster without losing hydraulic power. You can operate several crane and head functions simultaneously with maximum hydraulic power, such as slewing the crane, feeding a log and maneuvering the machine with optimally low fuel consumption.

Levelling function

The cab levelling function means that you are always seated level and don't need to stretch and strain to maintain good posture.




A. Width

With 600/55x26,5 tires: 2 722 mm (8'11"). With 710/45x26,5 tires: 2 952 mm (9'8")

B. Length, total

7,550 mm (24'9")

C. Length, front axle to middle joint

1,930 mm (6,4")

D. Length, middle joint to rear axle

1,800 mm (5'11")

E. Transport height

3,930 mm (12'11")

F. Ground clearance

665 mm (2'2")

Approximate weight

From 19 610 kg (43,233 lb)

Type, Europe and North America

74 AWF, 6-cylinder diesel engine with turbo and intercooler. EPA Tier 4 Final and EU Stage 4.

Stroke volume

7.4 l (1.95 gal)


185 kW DIN (248 hp) at 1,900 rpm


1100 Nm (738 ft-lb) at 1,500 rpm

Fuel tank

405 l (107 gal)

Model and reach

230H: 8.7 m (28,5 ft), 10 m (32,8 ft), 11 m (36 ft)

Gross lifting torque

230H: 229 kNm (168,90 lbf-ft)

Gross slewing torque

47.5 kNm (35,034 lbf-ft)

Available heads

8,7 m (28'7"): S92, C93, C123, S132, C144. 10 m (32'10"): S92, C93, C123, S132, C144.


528 l/min (139 gal/min) at 1,600 rpm

System pressure

280 bar (4,061 psi)


24 V

Battery capacity

2 x 180 Ah


2 x 100 A

Driving speed

0-8/20 km/h (0-5/12.5 mph) (off-road/road)

Tractive force

168 kN (37,768 lbf)

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.

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