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Komatsu SK1020 Compact track loaders tech specs

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Video[1]
Interior [2]
Exterior [4]
Attachments [2]
2003-2012
3,400.32 cu cm Displacement
52.2 kw Gross power
2.29 m Loader dump height
0.69 m Loader dump reach
907 kg Lifting capacity
3,435 kg Operating weight

The Komatsu SK1020 is a compact track loader built for contractors who want strong hydraulic performance, useful lift, and fast travel speed in a practical older-school package. Powered by a naturally aspirated 52.2 kW Komatsu 4D98E-1FD diesel, it delivers a 907 kg lifting capacity, a high 130.2 L/min hydraulic flow rate, and a 16.09 km/h top speed. With a 3,435 kg operating weight and 1.74 m width over tracks, it suits grading, loading, cleanup, and attachment work where hydraulic strength matters as much as basic loader performance.

Strong 130.2 L/min hydraulic flow

Useful 907 kg lifting capacity

Fast 16.09 km/h travel speed

Komatsu closed load sensing hydraulic system

0.54 cu m bucket for daily loading work

Good fit for attachments, cleanup, and grading

Makana rating

Owner rating

| 3

Market average

AED 85,000

Starting from

AED 57,000

Komatsu SK1020 Technical specifications

Engine

Alternator supplied amperage

40 Amh

Aspiration

Naturally aspirated

Gross power

52.2 kw

Number of cylinders

4

Power measured @

2,500 rpm

General

Bucket capacity

0.54 cu m

Displacement

3400.32 cu cm

Engine model

4D98E-1FD

Lifting capacity

907 kg

Max speed forward

16.09 kph

Operating voltage

12 V

Operating weight

3,435 kg

Service refill capacities

Cooling fluid cap

8.33 liter

Fuel cap

73.05 liter

Hydraulic fluid cap

50.34 liter

Refill capacities

Engine oil cap

12.87 liter

Dimensions

Ground clearance

0.21 m

Height - top of cab

2.1 m

Length with bucket

3.69 m

Turning radius

1.65 m

Width over tracks

1.74 m

Loader

Loader dump height

2.29 m

Loader dump reach

0.69 m

Hydraulic system

Pump flow cap

130.2 lpm

Pump type

Komatsu closed load sensing system

Relief valve pressure

210 bar

Operating specifications

Rack back angle

39 º

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Download datasheets

Komatsu SK1020 expert review

Reviewed by Jed H. on March 12, 2026

Overview

The Komatsu SK1020 is one of those compact track loaders that makes its case through hydraulics and site speed more than badge hype. It is an older machine, yes, but it brings enough lift, a very healthy hydraulic setup, and strong travel speed to stay useful for contractors who want a practical CTL for real work.

Pros Strong hydraulic output, fast travel speed, useful lift for grading, loading, and attachment work.
Cons Older machine feel, modest ground clearance, used value depends heavily on condition and service history.

Performance & Efficiency

With 52.2 kW of power, a 907 kg lifting capacity, and a big 130.2 L/min hydraulic flow figure, the SK1020 looks most attractive to buyers who actually plan to use attachments properly. That closed load sensing hydraulic setup is a real selling point here, helping the machine feel more capable than basic loader numbers alone suggest. Add in a 16.09 km/h top speed and it becomes clear this machine was built to stay productive, not crawl around like it has all week to get there.

Maintenance & Ownership

The Komatsu 4D98E-1FD is a straightforward naturally aspirated diesel, which helps keep the ownership story more honest and less dramatic than some more complex machines. Still, on a CTL from this era, condition matters more than brochure charm. Tracks, rollers, hydraulic response, and general wear will decide whether you bought a useful contractor machine or an expensive lesson in optimism.

In Cabin & Interior

The cab is practical and work-first. At 2.1 m to the top of cab, it stays manageable enough for normal contractor access, and the overall layout is more about function than comfort. It will not feel premium, but that is not really the point here.

Safety Features

Safety comes mainly from predictable compact-track behavior, decent machine weight, and a stable working stance. Ground clearance of 0.21 m is on the modest side, so rough or messy ground needs more respect than some buyers will want to admit. The machine is capable, but it still expects the operator to bring a brain to work.

In Comparison

Caterpillar 257
A more familiar soft-ground CTL with stronger market recognition and easier resale logic.

Caterpillar 247
Another mainstream comparison point with a broader comfort zone for buyers who prefer familiar nameplates.

Komatsu SK1020
The more hydraulically interesting option for buyers who want site speed and attachment strength in a value-focused used machine.

Verdict

Rated 3 stars, the Komatsu SK1020 is a useful compact track loader for contractors who care about hydraulic performance, decent lift, and fast movement more than polished modern comfort. It makes the most sense as a value-driven used buy for grading, loading, cleanup, and attachment work, provided the machine’s condition is genuinely right.

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Komatsu SK1020 owner rating

Komatsu SK1020 Compact track loaders [2003-2012]

2003-2012

Overall rating

Based on 3 ratings

3.7
performance

4.3

comfort

3.7

fuel efficiency

3.7

safety

5.0

features

4.0

5 stars

0 %

4 stars

67 %

3 stars

33 %

2 stars

0 %

1 stars

0 %

Pros
Strong hydraulic flow and fast travel speed make it more useful than its age might suggest.
Cons
Ground clearance is modest, and older units live or die by condition more than spec-sheet charm.
performance

4.0

comfort

4.0

fuel efficiency

4.0

safety

5.0

features

5.0

Valuation

Last 12 month
2003

Komatsu SK1020 similar models

Highlight differences
Komatsu SK1020-5
Cat 257
Cat 247
Engine
Alternator supplied amperage 40 Amh
Alternator supplied amperage -
Alternator supplied amperage -
Aspiration Naturally aspirated
Aspiration Turbocharged
Aspiration -
Gross power 52.2 kw
Gross power 46.98 kw
Gross power 43.25 kw
Number of cylinders 4
Number of cylinders 4
Number of cylinders 4
Power measured @ 2,500 rpm
Power measured @ 2,600 rpm
Power measured @ 2,600 rpm
Bore -
Bore 9.91 cm
Bore 9.91 cm
Net power -
Net power 44 kw
Net power 40.27 kw
Stroke -
Stroke 10.16 cm
Stroke 10.16 cm
Years 2003-2012
Years 2014-2019
Years 2004-2008
Market Average AED 85,000
Market Average AED 186,000
Market Average AED 145,000
Price AED 57,000
Price AED 147,000
Price AED 130,000
General
Bucket capacity 0.54 cu m
Bucket capacity 0.46 cu m
Bucket capacity 0.38 cu m
Displacement 3,400.32 cu cm
Displacement 2,998.84 cu cm
Displacement 2,998.84 cu cm
Engine model 4D98E-1FD
Engine model Cat 3034 naturally aspirated
Engine model Cat 3034 naturally aspirated
Lifting capacity 907 kg
Lifting capacity 1,065.94 kg
Lifting capacity 952.55 kg
Max speed forward 16.09 kph
Max speed forward 12.07 kph
Max speed forward 12.07 kph
Operating voltage 12 V
Operating voltage -
Operating voltage -
Operating weight 3,435 kg
Operating weight 3,460 kg
Operating weight 3,023 kg
Tipping load -
Tipping load 2,091 kg
Tipping load 1,753 kg
Service refill capacities
Cooling fluid cap 8.33 liter
Cooling fluid cap 9.84 liter
Cooling fluid cap 9.84 liter
Fuel cap 73.05 liter
Fuel cap 90.08 liter
Fuel cap 64.35 liter
Hydraulic fluid cap 50.34 liter
Hydraulic fluid cap 55.26 liter
Hydraulic fluid cap 55.26 liter
Engine crankcase -
Engine crankcase 6.81 liter
Engine crankcase 6.81 liter
Refill capacities
Engine oil cap 12.87 liter
Engine oil cap -
Engine oil cap -
Dimensions
Ground clearance 0.21 m
Ground clearance 0.26 m
Ground clearance 0.27 m
Height - top of cab 2.1 m
Height - top of cab 2.04 m
Height - top of cab 2.01 m
Length with bucket 3.69 m
Length with bucket 3.54 m
Length with bucket 3.32 m
Turning radius 1.65 m
Turning radius 2.29 m
Turning radius 2.16 m
Width over tracks 1.74 m
Width over tracks 1.68 m
Width over tracks 1.68 m
Length without Bucket -
Length without Bucket 2.71 m
Length without Bucket 2.53 m
Loader
Loader dump height 2.29 m
Loader dump height 2.29 m
Loader dump height 2.1 m
Loader dump reach 0.69 m
Loader dump reach 0.82 m
Loader dump reach 0.64 m
Breakout force - lift cylinder -
Breakout force - lift cylinder 1,583.04 kg
Breakout force - lift cylinder 1,365.77 kg
Breakout force - tilt cylinder -
Breakout force - tilt cylinder 1,602.09 kg
Breakout force - tilt cylinder 1,603.9 kg
Hydraulic system
Pump flow cap 130.2 lpm
Pump flow cap 57.53 lpm
Pump flow cap 54.5 lpm
Pump type Komatsu closed load sensing system
Pump type -
Pump type -
Relief valve pressure 210 bar
Relief valve pressure -
Relief valve pressure -
Operating specifications
Rack back angle 39 º
Rack back angle 44 º
Rack back angle 37 º
Undercarriage
Ground contact area -
Ground contact area 29,005.17 cu cm
Ground contact area 29,005.17 cu cm
Ground pressure -
Ground pressure 0.3 bar
Ground pressure 0.26 bar
Track length -
Track length 1.52 m
Track length 1.52 m
Track width -
Track width 38.1 cm
Track width 38.1 cm
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build datetime: 4/23/2026, 1:35:11 PM