kubota zero-tail swing mini excavator

Engine output: 21.2 PS
Machine weight: 2590 kg
KUBOTA
Z E R O - TA I L S W I N G
MINI EXCAVATOR
Introducing the new U27-4 mini-excavator. Extra compact and tough
enough to tackle the most demanding tasks in tight spaces with ease.
And now with a more spacious cabin with an expansive field of vision
and a wider and lower entrance for easy cabin entry and exit, the U27-4
delivers outstanding comfort and ultra-luxury to every job you take on.
Greater cabin interior
The new U27-4 offers the largest cab
among 2.5-tonne excavators to deliver
more comfort and less fatigue over our
previous model. The foot space has been
increased by up to 370 mm. Moreover, the
cabin door width has been widened while
its entrance height has been lowered. This
allows quick access to and from the cabin
making operations that require frequent
get in and out, such as trenching and
piping, much easier. What’s more, a gasassist mechanism makes opening the front
window almost effortless.
Relaxing suspension seat
This comfortable seat fits better and keeps you working
longer comfortably with a suspension that reduces strain and
minimises fatigue. It reclines to accommodate your individual
posture, and offers weight compensation, firm and adjustable
wrist rests and a retractable seat belt.
The U27-4 is designed to handle those challenging jobs that
are way out of reach for bigger excavators. The zero-tail
swing lets you travel through and turn the cab smoothly in
tight spaces with ease. And features like a powerful digging
force and easy simultaneous operation of four functions
and more, offer performance you can truly rely on.
Powerful digging force
The U27-4 delivers an impressive bucket digging force. Its
powerful and well-balanced arm and bucket allow the operator
to dig faster, deeper (2820 mm) and more efficiently even in
the toughest conditions. It offers powerful workability and
excellent stability without the need of additional weights that
are often required by other zero-tail swing excavators.
Simultaneous operation of four functions
When the simultaneous operation of the boom, arm, bucket,
and swivel are required, two variable pumps will distribute an
accurate amount of oil flow to each actuator according to the
lever stroke. This process enables continuous high
performance digging and dozing.
Zero-tail swing
With zero-tail swing, even the tightest spaces become efficient
work places. The tail’s minimal protrusion outside the track
width lets you turn the cab throughout its 360-degree turning
radius with complete confidence and safety and fewer
accidents with things around you. It also maintains better
balance over conventional zero-tail swing excavators and
faster operation, making this mini-excavator ideal for work in
congested urban areas and inside buildings.
Kubota original
engine
Excellent visibility
To help you perform jobs more efficiently and safely, the
U27-4’s new cabin offers an expansive field of vision that
increases your environment awareness. The extra front and
back visibility from the ground allows you to take on delicate
tasks in tight spaces easier, and minimises the risks of bumping
into people or objects. Moreover, all boom hydraulic hoses
have been enclosed within the boom to reduce their damage
so they can remain durable over the long term, and to enhance
your field of vision so you can better concentrate on the job.
The U27-4 is powered by
Kubota’s tough and reliable
engine. Engineered with the
power to maximise digging
and lifting performance, it also
delivers minimised noise and
vibration, meeting all current
engine emission regulations.
Easy transportation
The U27-4’s 2,590 kg weight (cabin) allows it to be
conveniently loaded on a truck or a 3.5-tonne trailer to get to
the spot. And with the addition of tie down brackets, securing
the U27-4 onto the loader is now easier.
Machine width
The 1500 mm track width provides all the stability needed to
achieve any chore, while being narrow enough to operate in
places where space is restricted.
New digital panel
A
C
B
Following the excellence of Kubota’s Intelligent Control System, the new digital panel puts
convenience at the operator’s fingertips. The user-friendly digital panel is positioned to the front
right corner of the operator for better visibility, and features one-touch button operation to view
the time, hour meter and tachometer. Programming of the antiTime
theft keys can also be easily performed with the digital panel.
With easier access, simpler settings, easy-to-read indicators
and alerts, you’ll always be aware of the excavator’s
functioning status.
Hour meter
D
A Fuel level gauge
B Water temperature
gauge
C Warning lamps
(overheating, hydraulic, battery)
D LCD display (time, hour, rpm)
Tachometer
Diagnosis function
The diagnosis function monitors the U27-4’s condition and automatically alerts you in case of an
emergency with warning lamps and code numbers such as for overheating, hydraulic problems
or low battery.
With the U27-4, you can work with total confidence thanks to its sturdy and durable
ROPS/OPG for maximum operator safety and accident avoidance features such as
work lights and exterior back mirrors. Furthermore, the engine is ergonomically
organised with easy access to the radiator and engine oil cooler to make routine
maintenance and inspections a breeze.
A
B
C
F
D
G
A Battery
B Air cleaner
E
C Reserve tank
D Fuel filter
E Water separator
F Radiator
G Oil cooler
ROPS/OPG (top guard, level I) canopy
and cabin
The ROPS/OPG (Top Guard, Level I) canopy and cabin
provide protection in the event of accidental rollovers and
falling objects.
Kubota Original Anti-theft System
Your U27-4 is protected by Kubota’s industry-leading anti-theft
system. Only programmed keys will enable the engine to start
up. Attempting to start with an un-programmed key will activate
the alarm. Its features include an alert to remind the operator
to extract the key after operation, and an LED to alert potential
thieves that the system is activated.
The red programming key programmes
the individual keys. The individual black
keys start the engine.
Work lights and exterior back mirrors
Front guard mounting points
Standard Equipment
Engine/Fuel system
• KUBOTA original engine
• Double-element air cleaner
• Fuel level indication buzzer
• Battery isolator
• Electric fuel feeding pump
Undercarriage
• 2-speed travel
• Double flange track roller
• Short pitched rubber crawler
• Travel lock system
Hydraulic system
• Variable displacement pump
• Auxiliary hydraulic circuit piping to the arm's end
• Third line hydraulic direct return for AUX
• Straight travel circuit
• Hydraulic pressure checking ports
• Pressure accumulator
• Hydraulic lock system
Cabin
• Cabin heater for defrosting and demisting
with air ventilation
• 2 working lights on the cabin
• Weight-adjustable suspension seat (fabric seat)
• Retractable seatbelt
• Hydraulic pilot control levers with wrist rests
• Front window power-assisted with gas damper
• Location for radio
• Digital panel with diagnosis function
• ROPS (Roll-over Protective Structure, ISO3471)
• OPG (Top Guard Level 1)
• Front guard fixing point
• Side mirror
• Emergency exit hammer
• Switch and harness for beacon light
• 12V power outlet
Working equipment
• Arm (1300mm)
• 1 light on the boom
Canopy
• Weight-adjustable suspension seat (PVC seat)
• Retractable seatbelt
• Hydraulic pilot control levers with wrist rests
Quick coupler tool space
• Digital panel with diagnosis function
• ROPS (Roll-over Protective Structure, ISO3471)
• OPG (Top Guard Level 1)
• Switch and harness for beacon light
• Front guard fixing point
• 12V power outlet
Others
• KUBOTA original anti-theft system
• Tool storage space
• Swivel negative brake
• Tie down bracket
Optional Equipment
• Proportional flow control of auxiliary circuit
(AUX1)
• Radio installation kit on the cabin (antenna,
2 speakers, radio mount bracket)
• 2 working lights on the canopy
• Safety valve for boom, arm and dozer
• Bio oil
• Special paint
SPECIFICATIONS
*With rubber shoe type
WORKING RANGE
Operating weight
Cabin / Canopy
kg
2590 / 2490
2665 / 2565
m3
0.06
With side teeth
mm
500
Without side teeth
mm
450
D1105-E4-BH-2
Type
Water-cooled, diesel engine
E-TVCS (Economical,
ecological type)
Output ISO9249
PS/rpm
21.2 / 2400
kW/rpm
15.6 / 2400
mm
Displacement
cc
Overall length
Cabin
Canopy
78 x 78.4
1123
mm
4190
mm
2430
mm
2420
rpm
9.8
Rubber shoe width
mm
300
Tumbler distance
mm
1560
Dozer size (width x height)
mm
1500 x 300
Variable displacement pump
/min
Flow rate
Hydraulic pressure
MPa (kgf/cm2)
Flow rate
/min
Hydraulic pressure
1560
1990
1280
MPa (kgf/cm2)
19.2
4190
17.2 (175)
Arm
kN (kgf)
12.3 (1260)
Bucket
kN (kgf)
21.0 (2140)
Boom swing angle (left/right)
Auxiliary circuit
21.6 (220)
Gear Type
P3
Max. digging force
28.8 x 2
deg
Flow rate
/min
Hydraulic pressure
MPa (kgf/cm2)
75 / 55
48
17.2 (175)
4630
4740
22
Hydraulic reservoir
320 350
P1, P2
Hydraulic pumps
4370
Swivelling speed
2430
Bore x Stroke
Overall height
1980
3
Number of cylinders
3100
Engine
Model
R790
2820
2580
Bucket width
580
kg
Bucket capacity, std. SAE/CECE
1500
Cabin / Canopy
610
Machine weight
1350
U27-4
Model
33
Fuel tank capacity
Max. travelling
speed
Low
km/h
2.5
High
km/h
4.5
Ground contact
pressure
Cabin
kPa (kgf/cm2)
24.7 (0.25)
Canopy
kPa (kgf/cm2)
23.7 (0.24)
mm
Ground clearance
1300 mm arm
Unit: mm
290
*Machine weight: with 35kg standard bucket and fully served
*Operating weight: with 75kg operator, 35kg standard bucket and fully served
LIFTING CAPACITY
kN (ton)
Cabin, rubber version
Lifting point radius (2m)
Lift Point Height Over-front (blade down)
Lift Point Radius
Lifting point radius (max.)
Over-side
Over-front (blade down)
Over-side
1.5m
7.3 (0.74)
7.2 (0.73)
–
–
1.0m
10.2 (1.04)
6.8 (0.69)
4.2 (0.43)
2.4 (0.25)
0.5m
11.5 (1.18)
6.5 (0.67)
–
–
0m
12.3 (1.25)
6.4 (0.66)
–
–
Lift Point
Lift Point Height
*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 lifting capacities of the machine.
**The excavator bucket, hook, sling and other lifting accessories are not included on this table.
Axis of Rotation
* Working ranges are with Kubota standard bucket, without quick coupler.
* Specifications are subject to change without notice for purpose of
improvement.
All images shown are for brochure purposes only.
When operating the excavator, wear clothing and equipment in accordance to local legal and safety regulations.
KUBOTA EUROPE S.A.S.
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
http://www.kubota-global.net
W21PS02187
Download PDF
Similar pages