Jcb 3Cx Contractor, JCB
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JCB BACKHOE LOADER
|
3CX CONTRACTOR
MAX. ENGINE POWER
74.2kW (100hp)
MAX. BACKHOE DIG DEPTH:
5.97 metres (19ft 7in)
MAX. LOADER CAPACITY:
1.0m
3
(1.32yd
3
)
H
G
F
E
D
B
C
K
A
J
STATIC DIMENSIONS
JCB Backhoe Loaders feature heavy duty one piece mainframe, componentised driveline and fully enclosed engine compartment. All fluid and component compartments are lockable using the ignition key.
Machine model
3CX Contractor
m (ft-in)
Machine model
3CX Contractor
m (ft-in)
A
Total travel length
5.62 (18-5)
H
Total travel clearance
3.61 (11-10)
B
Axle centreline distance
2.17 (7-1)
J
Rear frame width
2.35 (7-8)
C
Slew centre to rear axle centre distance
1.36 (4-6)
K
Shovel width
2.35 (7-8)
D
Stabiliser feet clearance
0.37 (1-2)
J*
Rear frame width
2.24 (7-4)
E
Kingpost clearance
0.52 (1-8)
K* Shovel width
2.23 (7-4)
F
Steering wheel centre height
1.94 (6-4)
* Narrow option
A Product
of Hard Work
G
Cab roof height
2.91 (9-6)
JCB BACKHOE LOADER
|
3CX CONTRACTOR
GROUND LINE ANGLES
STEERING
Full power hydrostatic system utilising the main hydraulic pump via a steering priority valve. In the event of engine failure,
emergency steering is maintained.
Machine model
3CX Contractor
Axles
Steer drive
Steering turns – lock to lock
2
3
⁄
4
m (ft-in)
A
Kerb – kerb turning circle – unbraked
8.1 (26-7)
Kerb – kerb loader clearance circle – unbraked
10.4 (34-1)
C
Turning circle – braked
6.9 (22-8)
Loader clearance circle – braked
9.5 (31-2)
(Depending on tyre size, ground conditions etc.)
B
A
Approach angle 66°
B
Interference angle/ramp to ground plane 120°
C
Departure angle 20°
ENGINE SUPPORT SYSTEM
Engine support system is designed for ease of daily checks, routine maintenance and longer service intervals.
Fuel type
Diesel.
OPERATING WEIGHTS
Fuel filter
Replaceable spin-on cartridge plus water/sediment separator prefilter.
Air cleaner
Dual, dry element type with self cleaning internal air intake precleaner.
Operating weight includes machine equipped with 610mm excavator bucket, Extradig 6-in-1 shovel with forks and full
fuel tank.
Oil filter and lubrication
Full flow, spin-on type filter.
Cooling system
Hot climate specification, pressurised 14.5 psi (1.0 bar) suction fan. Pressurised recovery tank with
integral filler neck.
Machine model
3CX Contractor
kg (lb)
Weight
8070 (17800)
ELECTRICAL AND INSTRUMENTATION
12 volt negative ground, utilising wiring and connectors meeting IP69 water ingress test standard. Central fuse panel.
Gauges
Tachometer, engine coolant temp, fuel level, hourmeter, clock.
ENGINE
Warning system
Audible and visual system for engine oil, water in fuel, transmission oil temperature and pressure,
park brake, air cleaner, alternator.
Four cylinder, direction injection diesel. Belt driven water pump, spin-on oil, fuel filters, water separator prefilter, dual element air
cleaner with internal precleaner, glow plug cold start aid.
Battery
115 A/hr.
Pre-wire
Radio speakers (cab), beacon (all).
Horn
Controlled from both front and rear.
Machine model
3CX Contractor
Alternator
95 amp standard.
Manufacturer
JCB
Front working lights
2 twin beam fixed position.
Aspiration
Turbo
Rear working lights
4 adjustable.
Displacement
4.4 Ltr
No. of cylinders
4
Rated engine RPM
2200
JCB TORQUE LOCK (Optional)
Power ratings
Gross ISO 14396 and SAE J1995
kW (HP)
74.2 (100)
An industry exclusive, JCB Torque Lock enables an operator to dramatically reduce travel time and improve fuel efficiency during
roading operations.
Torque Lock incorporates a clutch which, when engaged, enables a direct connection between the engine and gearbox.
By “locking up” the torque converter slippage is eliminated. Torque Lock engages automatically in 4th gear (Powershift models)
or “A” mode (Autoshift models).
Not available on Synchroshuttle models.
Net ISO 9249 and SAE J1349
kW (HP)
72.8 (97.6)
Torque ratings
Gross ISO/TR 14396 and SAE J1995
Nm (lbf ft)
425 (313.5)
Net ISO/TR 9249 and SAE J134
Nm (lbf ft)
417 (307.6)
A Product
of Hard Work
Max. torque RPM
1300
JCB BACKHOE LOADER
|
3CX CONTRACTOR
TRANSMISSION
REAR AXLE
The JCB Transmissions are designed and built specifically for JCB Backhoe Loaders. They feature synchronised shifting in all
gears. Powershuttle between forward and reverse. Ground speeds are designed to maximise production.
JCB auto powershift 6 speed transmission features automatic upshift and downshift between 4th, 5th and 6th gear controlled by
machine travel speed and incorporates a kickdown pedal to select first gear. The operator may use the Autoshift in manual mode
when operator control of shift points is desired. The JCB Powershift transmission allows fast gear changing without losing speed
or momentum on gradients. The integral torque converter and electrically operated reversing shuttle help this backhoe loader
produce fast cycle times for real wheeled loader performance. Low 1st and 2nd gear ratios provide excellent tractive effort for
loading and sitestripping.
JCB rear axles are designed and built specifically for backhoe loaders and accept a wide variety of tyre combinations.
Machine model
3CX Contractor
Type
JCB Epicyclic hub reduction with torque proportioning
Limited slip
Option
Axle ratings
kg (lb)
Static load rating
21000 (46296)
Dynamic load rating
7000 (15432)
Machine model
3CX Contractor
3CX Contractor
Manufacturer
JCB
JCB
Type
Powershift
Automatic Powershift
CAB
Torque converter
305mm (12")
305mm (12")
Torque converter ratio
2.54:1
2.54:1
Excellent visibility (and safety) is provided by the extra large tinted glass areas of 6.4 sq m (70 sq ft). Cab frame is ROPS and FOPS
approved for maximum operator protection. ISO standard 3471 and 3449 (SAE J1040 and J231).
Torque Lock
Option
Option
Gears forward/reverse
4/4
6/4
A fully adjustable seat with lumbar support combines with ergonomically positioned controls to minimise operator fatigue.
Gear selection
Powershift
Powershift
●
Shuttle control – F/R
Power shuttle
Power shuttle
The in-cab noise levels are the lowest in the business for maximum operator comfort.
●
Travel speeds
kph (mph)
kph (mph)
A radio location is provided as standard plus twin speakers for stereo sound.
●
Tyres equipped – front 12.5x18 rear 18.4x26
Gear 1
Cab provides easy access through a two door frame. Rear side windows open either partially or fully for extra ventilation.
Standard features include: lap seat belt, 3 speed fresh air/recycle heater, front and rear screen wash/wipers, front and rear
horn, exterior mirrors, and flat easy-clean floor.
●
5.2 (3.2) F / 5.2 (3.2) R
5.09 (3.1) F / 6.3 (3.9) R
Gear 2
9.6 (5.9) F / 9.6 (5.9) R
8.4 (5.2) F / 8.5 (5.4) R
Gear 3
22.3 (13.8) F / 22.3 (13.8) R
11.3 (7.0) F / 22.4 (14.4) R
The instrument panel is positioned to the right-hand side for ease of viewing from either the loading or excavating position
and has an optional lockable cover for vandal proofing. Engine speed, fuel and coolant temperature gauges, (and clock on
cab builds) are mounted in the panel.
●
Gear 4
40.0 (24.9) F / 40 (24.9) R
18.0 (11.4) F / 29.9 (19.7) R
Gear 5
–
29.3 (19.0) F / –
Gear 6
–
38.3 (23.8) F / –
A high performance air conditioning system is optionally available on turbo builds providing the operator with a cool working
environment when working in high temperatures.
●
Mechanical suspension seat gives the operator a comfortable operating position.
●
FRONT AXLE
An optionally available heated air suspension seat gives the operator the ultimate comfort with automatic compensation
for weight.
●
JCB front axles are designed and built specifically for backhoe loaders and accept a wide variety of tyre combinations.
Machine model
3CX Contractor
JCB PRECISION CONTROL (Optional)
Type
JCB 4WD steer drive with torque proportioning
Axle ratings
kg (lb)
JCB Precision Control offers smooth, low effort and productive operation, while reducing operator fatigue. Excavator control
joysticks are integrated into the seat armrests, which provides increased legroom, improved job visibility and hydraulic excavator
ergonomics. A proportional switch is mounted in the joystick to operate JCB’s Extradig. An optional joystick mounted switch is
also available to operate auxiliary attachments. The low effort mechanical loader control incorporates an optional proportional
roller to operate loader mounted attachments.
Best in class hydraulic modulation combined with the greatest digging performance, means that the JCB Precision Control is
unmatched in any backhoe loader.
Static load rating
16500 (36375)
Dynamic load rating
5500 (12125)
Oscillation angle
16°
Steering ram
Powered track rod
A Product
of Hard Work
JCB BACKHOE LOADER
|
3CX CONTRACTOR
LOADER DIMENSIONS
LOADER ATTACHMENTS
P
Y
S
V
R
O
Z
N
M
U
T
Q
W
X
LOADER DIMENSIONS – 6-in-1 Shovel
LOADER ATTACHMENTS – Forklift Performance and Data
m (ft-in)
6-in-1 Shovel mounted forks
Quickhitch mounted forks
M
Dump height
2.74 (9-0)
m (ft-in)
m (ft-in)
N
Load over height
3.20 (10-6)
Section width
0.08 (0-3
1
⁄
8
)
0.08 (0-3
1
⁄
8
)
O
Pin height
3.45 (11-4)
W
Fork length
1.1 (3-7)
1.1 (3-7)
P
Pin forward reach
0.36 (1-2)
X
Reach at ground
2.66 (8.9)
2.03 (6-8)
Q
Reach at ground (toe plate horizontal)
1.37 (4-6)
Y
Reach at full height
2.25 (7-5)
1.72 (5-8)
R
Max. reach at full height
1.15 (3-9)
Z
Fork lift height
2.92 (9-7)
3.27 (10-9)
S
Reach at full height fully dumped
0.78 (2-7)
Fork spacing – min
0.2 (0-8)
0.2 (0-8)
T
Dig depth
0.10 (0-4)
Fork spacing – max
2.17 (7-3)
1.03 (3-4)
U
Rollback at ground
45°
SWL @ 500mm load centres
kg (lb)
1000 (2205)
2000 (4410)
V
Dump angle
43°
Jaw opening width
0.95 (3-1)
LOADER PERFORMANCE
LOADER ATTACHMENTS – Direct Mount
JCB loaders provide parallel lift self levelling on the up and down cycle enhancing load retention and use of optional pallet forks.
High capacity buckets combined with high lift and breakout forces maximise productivity.
Loader buckets are listed according to size and application. All buckets are drilled to accept optional auxiliary cutting edge or teeth.
Flat top box section provides rigidity and assists in bucket levelling.
Machine model
Standard lift rams
Large lift rams option
Loader breakout of shovel
kgf (lbf)
6531 (14398)
6531 (14398)
6-in-1 Shovel
Loader breakout – arms
kgf (lbf)
4732 (10432)
6203 (13675)
Capacity SAE
Lift capacity to full height – A*
kg (lb)
3229 (7119)
4308 (9498)
Width mm (ft-in)
Rated m
3
(yd
3
)
Struck m
3
(yd
3
)
Lift capacity to full height – B*
kg (lb)
3169 (6986)
4248 (9365)
2235 (7-4)
1.0 (1.32)
0.83 (1.09)
Clamping force (A* and B*)
kgf (lbf)
2940 (6480)
2940 (6480)
2350 (7-8)
1.0 (1.32)
0.83 (1.09)
A Product
of Hard Work
* Type A shovel = 2235mm (7'4") / Type B shovel = 2350mm (7'8")
JCB BACKHOE LOADER
|
3CX CONTRACTOR
BRAKES
HYDRAULIC SYSTEM
The JCB braking system ensures effective, fade-free braking. The self-adjusting, multi-disc arrangement is inboard mounted and is
oil immersed for minimum maintenance and a long operating life.
The Open Centre system uses twin gear pumps and Hydraulic Speed Control (HSC) with a power modulation valve that
automatically varies hydraulic power to match digging conditions for extra performance and power.
A 3 position switch allows the selection of 2 wheel drive with two wheel braking; 2 wheel drive with four wheel braking or
4 wheel drive with four wheel braking.
Open centre hydraulic system using simple and reliable high efficiency gear pumps.
●
●
A Power Modulation Valve automatically varies the hydraulic power to match digging conditions to improve performance
and efficiency – automatically dumps one pump when 4th gear selected on powershift models.
●
All machines are fitted with servo assisted brakes as standard for low effort braking.
●
Twin brake pedals provide tighter turning circle and enhanced steering control on slippery ground.
The HSC switch enables controlled use of hydraulic response depending upon application.
●
●
Automatic compensation ensures ‘straight’ machine braking.
Easily used, ergonomically positioned levers give excellent control of the loader and backhoe, thus reducing operator fatigue.
●
●
Disc diameter: 220 mm (8.7 in). Friction area: 129,000 sq.mm (200 sq. in) per brake.
An independent pump powers the Extradig dipper so that it can extend or retract without breaking the digging cycle.
This allows faster cycle times and simultaneous use of the telescopic and normal excavator actions in operations such as
grading and bank dressing.
●
●
The integral park brake is a ball and ramp, oil immersed type located within the transmission and will hold the machine on
1:3 gradients. It is an over-centre type, adjustable within the cab, with transmission disconnect to prevent premature brake
pad wear. There are 5 friction brake discs having an outside diameter of 127mm (5 in). Frictional area per brake disc is
47.65 sq. cm (7.39 sq. in) giving a total frictional area of 476.5 sq. cm (73.9 sq. in).
●
A full flow 10 micron filter ensures that oil stays free of contaminants.
●
Engine
Turbo
Pump flows at 2200rpm
l/min (gal/min)
Main pump output
81 (17.8)
Second pump output
72 (15.8)
TYRES
System working pressure
bar (lbf/sq in)
Backhoe and loader
251 (3650)
Front
16/70 x 20, 10PR Traction or Industrial
Rear
18.4 x 26, 12PR Traction or Industrial
16.9 x 28, Radial Traction
JCB SMOOTH RIDE SYSTEM (Optional)
SERVICE CAPACITIES
The JCB Smooth Ride System (SRS) consists of a dry nitrogen and oil filled accumulator installed in line with the loader lift cylinders.
When activated, the Smooth Ride System allows the loader arms to float. This action counteracts variations in road or site
surfaces and provides the operator with a smooth ride. The JCB Smooth Ride System is manually controlled, via a rocker switch
on the instrument panel, for maximum benefit and user flexibility.
Machine model
3CX Contractor
ltr (gal)
Cooling system
18.5 (4.1)
Fuel tank
160 (35.2)
Engine oil with filter
15 (3.3)
Powershift transmission with filter
16 (3.5)
JCB auto powershift
16 (3.5)
Rear axle
16 (3.5)
Front drive axle
16 (3.5)
JCB POWERSLIDE (Optional)
Hydraulic system incl. tank
132 (29)
Exclusive to JCB, this option enables the excavator’s sideshift carriage to be hydraulically powered across the rearframe by the
operation of a pedal or joystick mounted proportional switch (Precision Control) in the cab.
With this feature there is no need to “push” the carriage across with the bucket avoiding ground damage and the need to relocate the
whole machine.
A Product
of Hard Work
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