K U B O TA M I N I E X C AVAT O R

With smooth simultaneous operation, powerful digging force,

and outstanding attachment versatility, these excavators
bring high performance to a whole new level.

Strong digging force

A well-balanced arm and bucket guarantee superior digging
force whenever you need it. Kubota's unique, powerful
hydraulic system, combined with large-capacity variable
displacement pumps, delivers precise control of arm and
bucket movements. This maximum operating pressure
generates faster job speed, even in tough digging situations.

Four simultaneous operations

Variable displacement hydraulic pumps, which specifications
are set to utilise the engine power at the optimum level,
ensure high performance digging and dozing at all times.
The combination of a two-element variable pump and a gear
pump enable bucket, boom, arm and swing simultaneous
operation. The efficiency can be seen in operations like
dumping onto lorries and levelling ground.

Third line hydraulic return

The Third Line Hydraulic Return enables greater
oil flow efficiency by reducing back pressure
when working with hydraulically actuated
attachments, such as a hydraulic hammer.
 KUBOTA MINI EXCAVATOR

KX91-3α2/KX101-3α2
Adjustable maximum oil flow on auxiliary circuit
The maximum oil flow rate of the auxiliary circuit can be
changed/adjusted by simply pushing a switch—there’s
no need for additional tools. This simplifies the utilisation
of front attachments like tilt buckets, brush cutters and
hydraulic hammers—you can
reduce or increase the flow
to get just the right amount of
control.
*The maximum oil flow can vary
according to the load of front
attachments.

ROPS/FOPS (level 1) cabin and canopy

The cabin and canopy offer maximum
safety to the operator with their Roll-over
Protection Structure (ROPS) and Falling
Object Protection Structure (FOPS).

Reliable machine stability

Kubota’s excavators are designed and
More driving force engineered to deliver a level of machine
stability that’s second to none. The
A stronger driving force of the travel outstanding balance of the KX91-3α2 and
motor and improved turnability KX101-3α2 allows them to carry heavy
enable smooth dozer backfilling and loads easily and smoothly.
levelling operation.
Kubota delivers security and operating ease,
thanks to a host of advanced features.

A N T I -T H E F T S Y S T E M
The ultimate in security that’s as easy as turning a key. It’s the industry’s first
standard-equipped anti-theft system, and another original only from Kubota.

THE SYSTEM SAFETY/SECURITY

Introducing Kubota’s new simple and secure anti-theft system. Only “programmed keys” will enable the engine to start. Even identically
Our one-key-system has an IC chip, which only starts the shaped keys can't start the engine unless they are programmed. In
engine when the system recognises the appropriate key. fact, attempting to start the engine with an un-programmed key will
Standard equipment includes one Red programming key, plus activate the system's alarm. This alarm will continue even after the un-
two Black operational keys. And up to four Black keys can be programmed key is removed. It will only stop once a programmed key is
programmed. What’s more, you get peace of mind knowing inserted into the ignition and switched on to start the engine.
your construction equipment couldn’t be in safer hands.

EASY OPERATION EASY PROGRAMMING

No special procedures needed. No PIN numbers needed. Just turn One Red programming key and two pre-programmed Black operational
the key. Plus, our simple “one-key-security system” allows access to keys come standard. If a Black key is misplaced, or if additional Black
the cabin door and engine bonnet as well as the fuel tank. keys are needed (a maximum of two can be added), key programming is
easy. Simply insert the Red key, followed by the Black keys.

■ Programmed key
...
om
Vro

Insert key The excavator moves

!
■ Un-programmed key ep Beep!
Be

Insert key The alarm sounds

1 Insert the Red programming key, then press

the monitor button.

2 Insert new individual Black operational key.

 D I G I TA L PA N E L
Informative, interactive and functional. Kubota's Intelligent Control
System keeps you in tune of the KX91-3α2 and KX101-3α2’s vital
signs. It accurately displays easy-to-understand diagnostics of
current working conditions and warning indicators for engine rpm
and hour meter, as well as for fuel, temperature and oil levels.
When filling up with fuel, our panel also informs the operator that
the tank is nearly full, and alerts the operator to when routine
maintenance is due. Overall, the panel reduces excavator
downtime and repair fees for a decrease in total operating costs.

Language selection display Information when service is required Low fuel display

E A S Y O P E R AT I O N
1 Proportional flow auxiliary switch 2 2-speed switch
A convenient thumb-operated switch enables easy operation of The advanced 2-speed travel switch allows user-friendly travel
auxiliary equipment. speed changes, improved operation, comfort and control.

3 Auto Idling system (AI) 4 Convenient breaker switch

Whenever high engine rpm isn’t needed, this system automatically A simple forefinger operation is all that’s needed
reduces the engine to idling rpm, and revs it back to its original to activate the hydraulic breaker.
setting when work resumes. This helps to reduce noise and exhaust
emissions, and saves on fuel, energy and running costs.

If control levers Engine rpm is

are left neutral for reduced automatically
more than to idling rpm
4 seconds

Function 2

Engine rpm is When levers

reset promptly are moved
to the dial-set rpm again...

4 3
With Kubota excavators, maintenance is simple and quick,
so you can work more efficiently.

Engine inspection Kubota engine

Primary points, like the engine and air cleaner, can Kubota’s unique new E-TVCS (Three
be inspected and maintained easily via the rear Vortex Combustion System) enables
engine cover. The fuel filter and water separator high-energy output, low vibration and
are independently installed and both are located low fuel consumption, while minimising
inside the strong and durable steel-plated bonnet, exhaust emissions.
which opens widely for quick inspection and routine
maintenance. An engine inspection window is also
located behind the seat for easier access to the
engine’s injection nozzles.

Control valve inspection

A quick and easy inspection
of the control valve is possible
simply by opening the latch on
the bonnet, located to the right of
the cabin. When more detailed
maintenance or repairs are
required, the remaining panels
on the swing frame can be easily
removed using standard tools.

Swivel negative brake Two-piece hose design Front bush pins

With swivel negative brake, The two-piece hose design on To maximise durability, we’ve introduced bushings
the swivel function is locked the dozer and boom cylinders on all of the pivot points on the front attachment and
automatically whenever the reduces hose replacement connecting points on the swing bracket. Kubota even
engine is stopped or the pilot time by 60% compared to non- uses bushings on the swing bracket’s fixed joints—
control safety lever is raised. joint types. What’s more, this between the pin and the boss—to prevent potential
This feature eliminates the need design virtually eliminates the damage caused by shock and vibration over many
for a swivel transport lock pin. need to enter the machine for years of use. This minimises attachment play and
maintenance. helps maintain operating precision for a long time.
Standard Equipment

Engine/Fuel system Canopy Working equipment

• Double element air cleaner • ROPS (Roll-over Protective • 1350 mm arm (KX101-3α2) /
• Electric fuel pump Structure, ISO3471) 1275 mm arm (KX91-3α2)
• Auto idling system • FOPS (Falling Object Protective • Auxiliary hydraulic circuit piping to
Structure) Level 1 the arm end
Cabin • Weight-adjustable full • 2 working lights on cabin and 1 light
suspension seat on the boom
• ROPS (Roll-over Protective
• Seatbelt
Structure, ISO3471)
• Hydraulic pilot control levers with
• FOPS (Falling Object Protective
wrist rests
Structure) Level 1
• Travel levers with foot pedals
• Weight-adjustable full Optional Equipment
suspension seat
• Seatbelt Hydraulic system
• Hydraulic pilot control levers with • Adjustable maximum oil flow on Working equipment
wrist rests auxiliary circuit (SP1)
• 1550 mm arm
• Travel levers with foot pedals • Pressure accumulator
• Telescopic arm
• Cabin heater for defrosting • Hydraulic pressure checking ports
& demisting • Straight travel circuit
• Emergency exit hammer • Third line hydraulic return
Undercarriage
• Front window power-assisted with • Auxiliary switch on right control lever • 300 mm steel track (+ 95 kg)
2 gas dampers
• 12 V power source for radio-stereo Safety system Cabin
• Location for 2 speakers and • Anti-theft system • Radio/stereo installation kit
radio aerial • Engine start safety system on the
• Cup holder left console Safety system
• Travel lock system on the • Anti-fall valve unit (boom, arm,
Undercarriage left console dozer)
• 300 mm rubber track • Swivel lock system • Warning buzzer
• 1 x upper track roller • Boom anti-fall circuit in the
• 4 x (KX101-3α2) / 3 x (KX91-3α2) control valve Others
outer flange-type lower track roller
• 2 speed travel switch on dozer lever • Special paint upon request
• Bracket for anti-theft locking device
SPECIFICATIONS *With rubber shoe type
WORKING RANGE
Model KX91-3α2 KX101-3α2

Cabin kg 3240 3520

Machine weight
Canopy kg 3130 3410 1910 (1880)
1980 (2010)
Bucket capacity, std. SAE/CECE m3 0,089/0,078 0,107/0,093

4790 (4920) / 4980 (5110)

With side teeth mm 495 575
Bucket width
Without side teeth mm 470 550

D1503-M- D1503-M-
Model

3410 (3550)
3590 (3720)
EBH-3-EC-N EBH-4-EC-N

Water-cooled, diesel engine

Type
E-TVCS (Economical, ecological type)

2440
Engine PS/rpm 26,6/2200 27,5/2300
Output ISO9249
kW/rpm 19,6/2200 20,3/2300

340 360
Number of cylinders 3
1560 / 1665

2900 (3180) / 3100 (3300)

Bore r Stroke mm 83 r 92,4
2000 / 2100

2170 (2340)
2350 (2530)
Displacement cc 1499 1440
Overall length mm 4760 4920
4760 / 4920

Cabin mm 2440
Overall height
Canopy mm 2440
Swivelling speed rpm 9,0 8,9
Rubber shoe width mm 300
Tumbler distance mm 1560 1665
4880 (5130) / 5100 (5300)
Dozer size (width r height) mm 1550 r 335 5000 (5240) / 5210 (5400)
P1, P2 Variable displacement pump
Flow rate /min 40 + 40
Hydraulic pressure MPa (kgf/cm2) 23,5 (240,0) 24,5 (250,0)
Hydraulic pumps
P3 Gear Type
Flow rate /min 21

0
131
Hydraulic pressure MPa (kgf/cm2) 19,6 (200,0)
daN (kgf) 1830 (1867) 1830 (1870)
480 410

Arm
Max. digging force

1550
1440
Bucket daN (kgf) 2990 (3050) 3110 (3180)

1550
Boom swing angle (left/right) deg 80/50

Flow rate /min 40

Auxiliary circuit
Hydraulic pressure MPa (kgf/cm2) 23,5 (240,0) 24,5 (250,0)

Hydraulic reservoir 36
Fuel tank capacity 48

Max. travelling Low km/h 3,0

speed
High km/h 4,6

Ground contact Cabin kPa (kgf/cm2) 32,3 (0,33)

pressure Canopy kPa (kgf/cm2) 31,2 (0,32) 31,4 (0,32)
Ground clearance mm 295 290

LIFTING CAPACITY *With cabin, rubber shoe and standard arm

KX91-3α2 daN (ton)
Lifting point radius (1m) Lifting point radius (3m) Lifting point radius (4m)
Lift Point Height Over-front Over-front Over-front
Over-side Over-side Over-side
Blade Down Blade UP Blade Down Blade UP Blade Down Blade UP
3m - - - 620 (0,63) 620 (0,63) 620 (0,63) - - -
2m - - - 750 (0,77) 750 (0,77) 750 (0,77) 670 (0,68) 590 (0,60) 540 (0,55)
1m - - - 970 (0,99) 860 (0,88) 780 (0,80) 720 (0,74) 570 (0,58) 520 (0,53) Lift Point Radius
0m - - - 1090 (1,12) 830 (0,85) 750 (0,76) 750 (0,77) 560 (0,57) 510 (0,52) Lift Point
-1m 2170 (2,21) 2170 (2,21) 2170 (2,21) 1030 (1,05) 820 (0,84) 740 (0,76) - - -
-2m - - - 890 (0,90) 830 (0,85) 750 (0,76) - - -

KX101-3α2 daN (ton) Lift Point Height

Lifting point radius (1m) Lifting point radius (3m) Lifting point radius (4m)
Lift Point Height Over-front Over-front Over-front
Over-side Over-side Over-side
Blade Down Blade UP Blade Down Blade UP Blade Down Blade UP
3m - - - 680 (0,69) 680 (0,69) 680 (0,69) - - -
2m - - - 860 (0,88) 860 (0,88) 860 (0,88) 750 (0,76) 740 (0,75) 620 (0,64) Axis of Rotation
1m - - - 1130 (1,15) 1080 (1,10) 900 (0,91) 840 (0,85) 720 (0,73) 600 (0,62)
0m - - - 1290 (1,32) 1040 (1,06) 860 (0,88) 900 (0,91) 700 (0,71) 590 (0,60)
-1m 1930 (1,97) 1930 (1,97) 1930 (1,97) 1260 (1,28) 1030 (1,05) 850 (0,87) - - -
-2m 2560 (2,61) 2560 (2,61) 2560 (2,61) 1140 (1,16) 1030 (1,06) 850 (0,87) - - -
Please note:
* The lifting capacities are based on ISO 10567 and do not exceed 75% of the static tilt load of the machine or 87% of the hydraulic * Working ranges are with Kubota standard bucket, without quick
lifting capacity of the machine. coupler.
* The excavator bucket, hook, sling and other lifting accessories * Specifications are subject to change without notice for
are not included on this table. KUBOTA EUROPE S.A.S. purpose of improvement.
19 à 25, Rue Jules - Vercruysse -
Zone Industrielle - B.P. 50088
95101 Argenteuil Cedex France
Téléphone : (33) 01 34 26 34 34
Télécopieur : (33) 01 34 26 34 99 Cat. No.8734-01-ER Printed in Japan ’07-09D. 2 3