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Komatsu WB142 Backhoe loaders tech specs

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Interior [2]
Exterior [4]
Attachments [2]
2007-2014
120.36 liter Fuel cap
299.63 Nm Max torque
57.05 kw Net power
6,585 kg Operating weight
7.07 m Overall Length
2.19 m Overall Width

At 6.6 tons operating weight, the Komatsu WB142 is a practical backhoe loader built for trenching, loading, utility work, and general construction support. It combines 57.05 kilowatt net power, a naturally aspirated Komatsu 4D102LE-2 engine, 4.33 m backhoe digging depth, 5.61 m backhoe reach from swivel, and a synchronized gearbox with powershift shuttle, making it a balanced choice for contractors who need manageable size with dependable digging and loading performance.

Net power 57.05 kilowatt

Gross power 60.03 kilowatt

Operating weight 6,585 kg

Backhoe digging depth 4.33 m

Backhoe reach from swivel 5.61 m

Hydraulic pump flow 140.05 lpm

Synchronized gearbox with powershift shuttle

Makana rating

Owner rating

| 3

Market average

AED 260,000

Starting from

AED 170,000

Komatsu WB142 Technical specifications

Engine

Alternator supplied amperage

95 Amh

Aspiration

Naturally aspirated

Gross power

60.03 kw

Net power

57.05 kw

Number of cylinders

4

Power measured @

2,200 rpm

Torque measured @

1,300 rpm

General

Backhoe digging depth

4.33 m

Backhoe dump height

3.63 m

Bucket capacity

0.84 cu m

Bucket width

218 cm

Displacement

4506.45 cu cm

Engine model

4D102LE-2

Loader dump height

2.62 m

Loader dump reach

0.91 m

Max speed forward

37.01 kph

Max torque

299.63 Nm

Operating voltage

12 V

Operating weight

6,585 kg

Transmission type

synchronized gearbox, powershift shuttle

Wheelbase

2.19 m

Backhoe

Backhoe reach from swivel

5.61 m

Loader

Breakout force

5148.73 kg

Loader digging depth

10.16 cm

Service refill capacities

Cooling fluid cap

14 liter

Front axle fluid capacity

7.19 liter

Fuel cap

120.36 liter

Hydraulic fluid cap

97.27 liter

Rear axle fluid capacity

14.76 liter

Transmission fluid cap

18.17 liter

Refill capacities

Engine oil cap

9.08 liter

Dimensions

Ground clearance

0.4 m

Height - top of cab

2.83 m

Overall Length

7.07 m

Overall Width

2.19 m

Turning radius

3.63 m

Transmission

Max speed reverse

37.01 kph

Number of forward gears

4

Number of reverse gears

4

Hydraulic system

Pump flow cap

140.05 lpm

Pump type

Tandem fixed displacement pumps

Relief valve pressure

206.98 bar

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Download datasheets

Komatsu WB142 expert review

Reviewed by Wade A. on May 4, 2026

Overview

The Komatsu WB142 (2007–2014) is a practical backhoe loader designed for trenching, loading, backfilling, utility work, and general construction support. It delivers 57.05 kilowatt net power, a 6,585 kg operating weight, a 4.33 m digging depth, and 5.61 m backhoe reach from swivel, giving it balanced capability for small to medium jobsites.

Expert rating: 5 stars

Pros Manageable operating weight, good backhoe reach, and practical hydraulic flow for daily site work.
Cons Lower power and bucket capacity than heavier backhoe loaders.

Performance & Efficiency

The naturally aspirated Komatsu 4D102LE-2 engine produces 57.05 kilowatt net power and 299.63 Nm of torque, giving the WB142 steady output for trenching, loading, and backfilling. Its 140.05 lpm tandem fixed displacement pump system, 206.98 bar relief valve pressure, 5148.73 kg loader breakout force, and 0.84 cu m bucket capacity make it practical for utility work, soil handling, and daily construction support.

In Comparison

Venieri VF9: Heavier machine with stronger hydraulic flow and larger bucket capacity, but less convenient in tight areas.
Komatsu WB140: Larger and heavier option with stronger hydraulic output.
Komatsu WB142: Better fit for buyers who want Komatsu reliability, easier handling, and balanced backhoe loader performance.

Final Verdict

Rated 5 stars, the Komatsu WB142 delivers dependable digging, practical loader performance, and easier site handling within the AED 170,000–260,000 range.

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Komatsu WB142 owner rating

Komatsu WB142 Backhoe loaders [2007-2014]

2007-2014

Overall rating

Based on 3 ratings

4.3
performance

4.3

comfort

4.3

fuel efficiency

4.5

safety

4.3

features

4.5

5 stars

33 %

4 stars

67 %

3 stars

0 %

2 stars

0 %

1 stars

0 %

Pros
The 6.6-ton weight makes it easier to handle than heavier backhoe loaders.
Cons
It does not have the same heavy digging force as larger models.
performance

4.0

comfort

5.0

fuel efficiency

4.0

safety

5.0

features

4.0

Valuation

Last 12 month
2007

Komatsu WB142 similar models

Highlight differences
Komatsu WB142-5
Venieri VF9.23
Komatsu WB140-2N
Engine
Alternator supplied amperage 95 Amh
Alternator supplied amperage -
Alternator supplied amperage 80 Amh
Aspiration Naturally aspirated
Aspiration -
Aspiration Turbocharged
Gross power 60.03 kw
Gross power 84.04 kw
Gross power 69.35 kw
Net power 57.05 kw
Net power -
Net power 64.88 kw
Number of cylinders 4
Number of cylinders 4
Number of cylinders 4
Power measured @ 2,200 rpm
Power measured @ 2,200 rpm
Power measured @ 2,200 rpm
Torque measured @ 1,300 rpm
Torque measured @ -
Torque measured @ 1,400 rpm
Bore -
Bore -
Bore 10.67 cm
Engine make -
Engine make -
Engine make Komatsu
Stroke -
Stroke -
Stroke 12.7 cm
Years 2007-2014
Years 1999-2000
Years 1999-2006
Market Average AED 260,000
Market Average AED 230,000
Market Average AED 250,000
Price AED 170,000
Price AED 150,000
Price AED 160,000
General
Backhoe digging depth 4.33 m
Backhoe digging depth 5.43 m
Backhoe digging depth 4.45 m
Backhoe dump height 3.63 m
Backhoe dump height 5.21 m
Backhoe dump height 2.87 m
Bucket capacity 0.84 cu m
Bucket capacity 1.22 cu m
Bucket capacity 0.99 cu m
Bucket width 218 cm
Bucket width 225 cm
Bucket width 235 cm
Displacement 4,506.45 cu cm
Displacement 4,000.09 cu cm
Displacement 4,401.58 cu cm
Engine model 4D102LE-2
Engine model 1004-40T
Engine model S4D106-2XFH
Loader dump height 2.62 m
Loader dump height 3.41 m
Loader dump height 2.74 m
Loader dump reach 0.91 m
Loader dump reach -
Loader dump reach 2.87 m
Max speed forward 37.01 kph
Max speed forward 33.15 kph
Max speed forward 37.82 kph
Max torque 299.63 Nm
Max torque -
Max torque 348.03 Nm
Operating voltage 12 V
Operating voltage -
Operating voltage 12 V
Operating weight 6,585 kg
Operating weight 8,500 kg
Operating weight 8,949 kg
Transmission type synchronized gearbox, powershift shuttle
Transmission type Hydrostatic
Transmission type -
Wheelbase 2.19 m
Wheelbase -
Wheelbase 2.19 m
Bucket digging force -
Bucket digging force -
Bucket digging force 4,002.96 kg
Backhoe
Backhoe reach from swivel 5.61 m
Backhoe reach from swivel 5.58 m
Backhoe reach from swivel -
Loader
Breakout force 5,148.73 kg
Breakout force -
Breakout force 5,801.45 kg
Loader digging depth 10.16 cm
Loader digging depth -
Loader digging depth 9.14 cm
Service refill capacities
Cooling fluid cap 14 liter
Cooling fluid cap -
Cooling fluid cap 14 liter
Front axle fluid capacity 7.19 liter
Front axle fluid capacity -
Front axle fluid capacity 8.71 liter
Fuel cap 120.36 liter
Fuel cap -
Fuel cap -
Hydraulic fluid cap 97.27 liter
Hydraulic fluid cap -
Hydraulic fluid cap 92.35 liter
Rear axle fluid capacity 14.76 liter
Rear axle fluid capacity -
Rear axle fluid capacity 17.79 liter
Transmission fluid cap 18.17 liter
Transmission fluid cap -
Transmission fluid cap -
Refill capacities
Engine oil cap 9.08 liter
Engine oil cap -
Engine oil cap 7.95 liter
Dimensions
Ground clearance 0.4 m
Ground clearance -
Ground clearance 0.34 m
Height - top of cab 2.83 m
Height - top of cab -
Height - top of cab 2.77 m
Overall Length 7.07 m
Overall Length 5.82 m
Overall Length 7.32 m
Overall Width 2.19 m
Overall Width 2.26 m
Overall Width 2.38 m
Turning radius 3.63 m
Turning radius 4.51 m
Turning radius 4.33 m
Front tread range -
Front tread range -
Front tread range 189.23 cm
Rear tread range -
Rear tread range -
Rear tread range 180.09 cm
Transmission
Max speed reverse 37.01 kph
Max speed reverse -
Max speed reverse 37.82 kph
Number of forward gears 4
Number of forward gears 3
Number of forward gears 4
Number of reverse gears 4
Number of reverse gears 2
Number of reverse gears 4
Hydraulic system
Pump flow cap 140.05 lpm
Pump flow cap 145.34 lpm
Pump flow cap 165.03 lpm
Pump type Tandem fixed displacement pumps
Pump type Piston
Pump type Closed center, load sensing
Relief valve pressure 206.98 bar
Relief valve pressure 230 bar
Relief valve pressure 206.84 bar
Operating specifications
Dump angle -
Dump angle -
Dump angle 45 º
Extended backhoe digging depth -
Extended backhoe digging depth -
Extended backhoe digging depth 5.61 m
Extended backhoe dump reach -
Extended backhoe dump reach -
Extended backhoe dump reach 3.81 m

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build datetime: 6/9/2026, 1:26:42 PM