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Komatsu WB70 Backhoe loaders tech specs

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Video[1]
Interior [3]
Exterior [4]
Attachments [2]
1996-2004
3.69 m Backhoe digging depth
70.02 liter Fuel cap
251.09 Nm Max torque
52.8 kw Net power
6,400 kg Operating weight
1.86 m Overall Width

A backhoe loader with a 6,400 kg operating weight, the Komatsu WB70 combines 52.8 kilowatt net power with a 3.69 m standard backhoe digging depth and hydrostatic transmission for construction, utility, roadwork, and general site support. With its 0.76 cu m bucket, 116.2 lpm hydraulic pump flow, and extended digging depth of 4.42 m, it is suited for buyers who need a practical backhoe loader with decent reach, loader strength, and manageable size.

Operating weight 6,400 kg

Net power 52.8 kilowatt

Maximum torque 251.09 Nm

Backhoe digging depth 3.69 m

Extended backhoe digging depth 4.42 m

Bucket capacity 0.76 cu m

Hydraulic pump flow 116.2 lpm

Makana rating

Owner rating

 | 3

Market average

AED 190,000

Starting from

AED 120,000

Komatsu WB70 Technical specifications

Engine

Alternator supplied amperage

60 Amh

Net power

52.8 kw

Number of cylinders

4

Power measured @

2,500 rpm

Torque measured @

1,200 rpm

General

Backhoe digging depth

3.69 m

Bucket capacity

0.76 cu m

Bucket digging force

4200.04 kg

Bucket width

185 cm

Displacement

3318.39 cu cm

Engine model

4D98E-1FA

Loader dump height

2.5 m

Loader dump reach

0.88 m

Max speed forward

39.11 kph

Max torque

251.09 Nm

Operating voltage

12 V

Operating weight

6,400 kg

Transmission type

Hydrostatic

Wheelbase

2.16 m

Backhoe

Backhoe reach from swivel

4.69 m

Loader

Breakout force

4397.04 kg

Loader digging depth

11.18 cm

Service refill capacities

Cooling fluid cap

15.14 liter

Front axle fluid capacity

4.16 liter

Fuel cap

70.02 liter

Hydraulic fluid cap

65.1 liter

Rear axle fluid capacity

5.3 liter

Refill capacities

Engine oil cap

10.22 liter

Operating specifications

Extended backhoe digging depth

4.42 m

Extended backhoe dump height

3.63 m

Extended backhoe dump reach

1.55 m

Extended backhoe reach from swivel

5.33 m

Tires

Front tires size (2WD)

12.5 x 20

Rear tires size

12.5 x 20

Dimensions

Ground clearance

0.46 m

Height - top of cab

2.68 m

Overall Width

1.86 m

Transmission

Max speed reverse

39.11 kph

Number of forward gears

4

Number of reverse gears

4

Hydraulic system

Pump flow cap

116.2 lpm

Pump type

Tandem gear

Relief valve pressure

200 bar

View more
Download datasheets
OEM product brochure

Komatsu WB70 expert review

Reviewed by Jed H. on May 5, 2026

Overview

The Komatsu WB70 (1996–2004) is a practical backhoe loader designed for utility trenching, light excavation, loading, backfilling, and general construction support. It delivers 52.8 kilowatt net power, 251.09 Nm torque, and a 6,400 kg operating weight, giving it a balanced profile for buyers who need capability without excessive size.

Expert rating: 4 stars

Pros Useful 4.42 m extended digging depth and strong 116.2 lpm hydraulic pump flow for general site work.
Cons Lower engine output than larger Komatsu WB150 and WB156 backhoe loaders.

Performance & Efficiency

The 52.8 kilowatt engine produces 251.09 Nm of torque, giving the WB70 practical performance for loading, trenching, backfilling, and moderate excavation. Its 0.76 cu m bucket, 4.42 m extended backhoe digging depth, and 116.2 lpm hydraulic pump flow make it useful for contractors handling varied daily site tasks.

In Comparison

Komatsu WB150: Stronger and better suited for heavier excavation work.
Komatsu WB156: Offers more torque and stronger performance for demanding contractors.
Komatsu WB70: Easier to manage and more practical for moderate digging and loading work.

Final Verdict

Rated 4 stars, the Komatsu WB70 is a solid backhoe loader within the AED 120,000–190,000 range, offering good versatility for utility work, light construction, and general site support.

Show less

Komatsu WB70 owner rating

Komatsu WB70 Backhoe loaders [1996-2004]

1996-2004

Overall rating

Based on 3 ratings

3.0
performance

3.7

comfort

4.0

fuel efficiency

4.3

safety

4.3

features

4.0

5 stars

0 %

4 stars

67 %

3 stars

0 %

2 stars

0 %

1 stars

33 %

Pros
Extended digging depth gives useful reach for utility trenching and service work.
Cons
Engine power feels modest when compared with larger backhoe loaders.
performance

4.0

comfort

5.0

fuel efficiency

4.0

safety

5.0

features

4.0

Valuation

Last 12 month
1996

Komatsu WB70 similar models

Highlight differences
Komatsu WB70A-1
Komatsu WB150-2N
Komatsu WB156-5
Engine
Alternator supplied amperage 60 Amh
Alternator supplied amperage 80 Amh
Alternator supplied amperage 95 Amh
Net power 52.8 kw
Net power 70.1 kw
Net power 70.84 kw
Number of cylinders 4
Number of cylinders 4
Number of cylinders 4
Power measured @ 2,500 rpm
Power measured @ 2,200 rpm
Power measured @ 2,200 rpm
Torque measured @ 1,200 rpm
Torque measured @ 1,400 rpm
Torque measured @ 1,500 rpm
Aspiration -
Aspiration Turbocharged
Aspiration Turbocharged
Bore -
Bore 10.67 cm
Bore -
Engine make -
Engine make Komatsu
Engine make -
Gross power -
Gross power 74.57 kw
Gross power 73.83 kw
Stroke -
Stroke 12.7 cm
Stroke -
Years 1996-2004
Years 1999-2006
Years 2006-2013
Market Average AED 190,000
Market Average AED 290,000
Market Average AED 320,000
Price AED 120,000
Price AED 190,000
Price AED 210,000
General
Backhoe digging depth 3.69 m
Backhoe digging depth 4.75 m
Backhoe digging depth 4.75 m
Bucket capacity 0.76 cu m
Bucket capacity 0.99 cu m
Bucket capacity 0.99 cu m
Bucket digging force 4,200.04 kg
Bucket digging force 4,241.09 kg
Bucket digging force -
Bucket width 185 cm
Bucket width 235 cm
Bucket width 235 cm
Displacement 3,318.39 cu cm
Displacement 4,401.58 cu cm
Displacement 4,506.45 cu cm
Engine model 4D98E-1FA
Engine model S4D106-2SFA
Engine model S4D102LE-2
Loader dump height 2.5 m
Loader dump height 2.74 m
Loader dump height 2.65 m
Loader dump reach 0.88 m
Loader dump reach 2.87 m
Loader dump reach 0.76 m
Max speed forward 39.11 kph
Max speed forward 37.82 kph
Max speed forward 37.82 kph
Max torque 251.09 Nm
Max torque 348.03 Nm
Max torque 413.52 Nm
Operating voltage 12 V
Operating voltage 12 V
Operating voltage 12 V
Operating weight 6,400 kg
Operating weight 8,949 kg
Operating weight 7,498 kg
Transmission type Hydrostatic
Transmission type -
Transmission type synchronized gearbox, powershift shuttle
Wheelbase 2.16 m
Wheelbase 2.19 m
Wheelbase 2.19 m
Backhoe dump height -
Backhoe dump height 2.87 m
Backhoe dump height 3.78 m
Backhoe
Backhoe reach from swivel 4.69 m
Backhoe reach from swivel -
Backhoe reach from swivel 6.04 m
Loader
Breakout force 4,397.04 kg
Breakout force 6,270.92 kg
Breakout force 5,998.31 kg
Loader digging depth 11.18 cm
Loader digging depth 9.14 cm
Loader digging depth 13.97 cm
Service refill capacities
Cooling fluid cap 15.14 liter
Cooling fluid cap 14 liter
Cooling fluid cap 14 liter
Front axle fluid capacity 4.16 liter
Front axle fluid capacity 8.71 liter
Front axle fluid capacity 7.19 liter
Fuel cap 70.02 liter
Fuel cap -
Fuel cap 150.26 liter
Hydraulic fluid cap 65.1 liter
Hydraulic fluid cap 92.35 liter
Hydraulic fluid cap 97.27 liter
Rear axle fluid capacity 5.3 liter
Rear axle fluid capacity 17.79 liter
Rear axle fluid capacity 14.76 liter
Transmission fluid cap -
Transmission fluid cap -
Transmission fluid cap 20.44 liter
Refill capacities
Engine oil cap 10.22 liter
Engine oil cap 7.95 liter
Engine oil cap 9.08 liter
Operating specifications
Extended backhoe digging depth 4.42 m
Extended backhoe digging depth 5.61 m
Extended backhoe digging depth 5.97 m
Extended backhoe dump height 3.63 m
Extended backhoe dump height -
Extended backhoe dump height 4.45 m
Extended backhoe dump reach 1.55 m
Extended backhoe dump reach 3.81 m
Extended backhoe dump reach -
Extended backhoe reach from swivel 5.33 m
Extended backhoe reach from swivel -
Extended backhoe reach from swivel 7.19 m
Dump angle -
Dump angle 45 º
Dump angle -
Tires
Front tires size (2WD) 12.5 x 20
Front tires size (2WD) -
Front tires size (2WD) -
Rear tires size 12.5 x 20
Rear tires size -
Rear tires size -
Dimensions
Ground clearance 0.46 m
Ground clearance 0.34 m
Ground clearance 0.46 m
Height - top of cab 2.68 m
Height - top of cab 2.77 m
Height - top of cab 2.96 m
Overall Width 1.86 m
Overall Width 2.38 m
Overall Width 2.38 m
Front tread range -
Front tread range 189.23 cm
Front tread range -
Rear tread range -
Rear tread range 180.09 cm
Rear tread range -
Overall Length -
Overall Length 7.32 m
Overall Length 7.53 m
Turning radius -
Turning radius 4.33 m
Turning radius 3.41 m
Transmission
Max speed reverse 39.11 kph
Max speed reverse 37.82 kph
Max speed reverse 37.82 kph
Number of forward gears 4
Number of forward gears 4
Number of forward gears 4
Number of reverse gears 4
Number of reverse gears 4
Number of reverse gears 4
Hydraulic system
Pump flow cap 116.2 lpm
Pump flow cap 165.03 lpm
Pump flow cap 165.03 lpm
Pump type Tandem gear
Pump type Closed center, load sensing
Pump type Variable flow, axial piston
Relief valve pressure 200 bar
Relief valve pressure 220.63 bar
Relief valve pressure 244.97 bar

Backhoe loaders. For sale.

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