We know that a wheel loader is a key part of the on-site process. That’s why the new JCB 427 HT/ZX wheel loader is built on a foundation of quality and reliability. It’s also designed to perform great feats of productivity, offering superb performance without the time-consuming inconvenience of a DPF.
A significant change to this wheel loader is the introduction of JCB’s latest Command Plus cab, which means, quite simply, best-in-class comfort, visibility, ergonomics and quietness. Expect superior serviceability and safety too.
We know that a wheel loader is a key part of the on-site process. That’s why the JCB 427 HT/ZX wheel loaders are built on a foundation of quality and reliability. The process we’ve used through design and manufacture will safeguard your working process, hour after hour, day after day.
The 427 HT/ZX wheel loader can perform great feats of productivity. With high power and torque, both machines meet Tier 4 Final/ Stage IV emission legislation without needing a DPF which eliminates the need for periodic regeneration.
The JCB 427 HT/ZX wheel loader are designed to move more material for less. To achieve this, we’ve designed the engine, axles, driveline and hydraulics to work in harmony with each other, for ultimate efficiency and durability.
The latest JCB 427 HT/ZX wheel loader boast our all-new command plus cab. This unique approach to ergonomics is the result of a radical rethink and a rigorous research programme. Expect best-in-class comfort, visibility, ergonomics and quietness.
Wheel loaders need to spend the maximum amount of time hard at work. JCB has designed the 427 HT/ZX wheel loader to do just that, with long service intervals and quality components.
Finite element analysis, as well as extensive endurance and rig testing ensure superior structural strength and durability. Cold cell testing guarantees starting performance down to -20ºC.
The new front chassis is more durable than ever; it’s been strengthened with additional ribs and gussets for maximum service life.
Precision machining provides high tolerances and accurate location of pins and bushes.
The JCB 427 and 437 can be specified for heavy-duty applications like waste or corrosive material handling.
A solid cast rear counterweight protects the rear of the machine – including the rear lights and cooling pack – from damage.
You can opt for additional guards on the front screen, lights, underbelly and rear grille.
For additional protection, there are impact-resistant fender edges and trims fitted.
Hoses are neatly routed and clamped through the articulation joint, well away from any pinch points.
Designed to tolerate both vertical and horizontal loadings, the articulation joint has a heavy-duty centre pin and oversized bush, as well as twin taper roller bearings on the top box joints.
These machines have integral steel fluid tanks for the ultimate in leak protection; a far superior solution to the plastic tanks favoured by some competitors.
The Cummins QSB 6.7-litre engine achieves maximum engine power (133kW in the 427, 136kW in the 437) and peak torque (841Nm) at low revs for excellent response.
A variable geometry turbocharger provides increased performance at low engine speed for improved cycle times and tractive effort.
JCB’s optional quickhitch makes attachment changing quick and efficient. The quickhitch is designed to be compatible with aftermarket attachments too.
Powerful twin variable displacement piston pump hydraulics can circulate a massive 252 l/min for fast cycles and excellent multi-function capability.
You can choose your ideal loader arm on a 427 and 437, with Z-bar linkage (ZX) for high breakout applications or high torque (HT) for parallel lift and multi-attachment use.
Choose a HT high lift on the 427 or 437, or HT super high lift on the 437 and you can use the machine for higher loading height applications.
With a range of axle options, you can tailor performance to any application.
› Standard differentials are ideal for hard standing ground conditions.
› Limited slip differentials is perfect for soft, muddy terrain with reduced traction.
› Open differential with an automatic locking front axle differential provide excellent traction in varied ground conditions.
The 427 and 437’s optional 5-speed transmission with torque convertor lock-up provides closer ratios for better acceleration, hill climbing and roading performance. The lock-up element eliminates losses from the torque converter for faster cycle times and improved efficiency.
A hydraulic cooling fan automatically reacts to ambient temperature and adjusts the fan speed to optimise energy and reduce fuel consumption. An additional benefit of this setup is reduced noise levels.
Eco Mode caps engine speed at 1800rpm for reduced fuel consumption. Productivity nonetheless remains formidable.
Our torque lock-up 5 speed transmission gives you up to 100% efficiency in gears 2 to 5 for improved fuel consumption. Closer gear ratios provide lower engine speed in each gear.
Wheel speed braking means the brakes rotate at the same speed as the wheels for heat and drag reduction, as well as improved fuel economy and access for maintenance and repairs.
Unloaded spool valves in the valve block mean that arms lower under gravitational, not hydraulic force, reducing fuel consumption.
JCB’s innovative variable displacement pumps feed a load-sensing valve block which only consumes power on demand, providing precise, efficient loader control.
No DPF means unnecessary additional fuel piping is eliminated as is the potentially dangerous temperatures involved in regeneration. The fuel that would have been needed to restore your DPF can be used instead for actual productive work.
You’ll immediately notice the totally redesigned ROPS structure; this has allowed the A pillars to be moved to the same width as the rear of the cab, providing a larger interior with a superb panoramic front windscreen. All switches and auxiliary controls are now located on the right-hand A-pillar for easier access.
Using your machine’s simple, dedicated menu interface is easily done with an intuitive optional rotary controller.
Operating your 427 or 437 loader is now easier than ever. All of the controls are seat-mounted, even going as far as to move with the seat suspension. You can also select the control system that’s best for your operators: choose from single lever joystick or multi-lever configurations, all using electro-hydraulics for the ultimate in precision.
There are two full colour LCD screens to navigate the operating menus, one of which doubles as a monitor for the optional rear-view camera and CommandPlus control menu.
To keep the operator environment comfortable for working at all times, we’ve positively pressurised the cab to eliminate dust and fumes.
After extensive research into operator ergonomics, we’ve devised the Command Driving Position, which boasts the very optimal control layout for a multitude of different driver shapes and sizes available, ranging from an air suspension standard seat to a super deluxe half leather seat, featuring fully adjustable heating and cooling functionality, electrically adjustable lumber support and adjustable dampers.
A set and forget feature makes operator access even easier. In short, your preferred steering wheel position is stored and can be instantly returned to, even after you’ve folded the wheel away.
Specify your 427 or 437 with either air conditioning or automatic climate control to create perfect working temperatures.
With a dedicated media port on board, you can be assured of superb connectivity for all your electronic devices.
A sliding window on both sides of the cab allows easy communication with people outside the machine.
The electronic handbrake offers numerous advantages: it’s quick and easy to operate, and, because there’s no cable, there are fewer holes in the cab. This helps to isolate the operator environment further.
It’s easy to get to the engine on a new JCB 427 and 437 with a large automatic opening single-piece bonnet.
Accessing the diesel and DEF (Diesel Exhaust Fluid) tanks is similarly straightforward via the lockable grille at the rear of the machine. You can check washer fluid level, engine oil and coolant from inside the cab, with all other routine checks and grease points located at ground level. This makes life both easier and safer.
Most Tier 4 Final/Stage IV engines use a costly Diesel Particulate Filter (DPF) that can cost a lot of money and time when it needs replacing. The Cummins engine is DPF-free, reducing your servicing and running costs.
A large single-faced wide-core cooling pack package provides unrivalled quick, easy and safe cleaning.
With the optional auto lubrication kit, your machine will take care of its own greasing requirements.
The CommandPlus cab relays machine condition giving real time alerts, safeguarding both the machine and the operator.
The intuitive CommandPlus help function provides the operator with meaningful descriptions of in-cab switch function. Using the “?” button, this allows new or unfamiliar operators to quickly and easily understand machine functions without having to refer to the operators manual.
By using premium components in the 427 and 437 (Cummins engine, ZF transmissions and axles, Rexroth pumps and Parker valve blocks), we’ve built in long service life as standard.
Full hydraulic dual circuit braking with multiple oil immersed discs gives the braking system a virtually maintenance-free lifespan.
A cyclonic engine fan scavenge filter provides four times the filtering capacity of a standard air filter. It’s a longer life system, with fewer components and a higher level of efficiency, making for better engine protection. There’s a large fuel tank fitted (290 litres on the 427 and 270 litres on the 437) which ensures maximum working hours between refills.
Heating and ventilation filters are conveniently located behind an external access panel. The main fuse board and relays have been repositioned next to the door for easy access.
Our optional rear-view camera displays an unobstructed rearward view on the in-cab colour monitor onboard your 427 and 437.
Superb visibility in dark conditions is guaranteed with JCB’s optional LED lighting.
You’ll find the rear-view mirrors mounted in front of the A-pillars for improved all-round visibility. Interior mirrors, heated exterior mirrors and bonnet mirrors combine to offer excellent views to every corner of your machine.
Visibility over the rear bonnet is excellent because the air cleaner is underneath the bonnet and the exhaust stack is located centrally. If you plan to use your wheel loader for quarry work, it’s worth specifying options such as blue flashing reverse lights, a green operator presence beacon, a rear object detection system, and hi-viz exterior chevrons.
Access steps on the 427 and 437 are inclined and equally spaced, complemented by well positioned grab handles for three points of contact at all times.
Full fender coverage flaps have been carefully designed to keep forward spray to a minimum for all tyre options. This increases safety and decreases debris build-up.
Door hinges are now mounted on the A-pillar; this simple change has created much better access via a larger and wider door aperture. It also means you can access the rear of your loader more safely. The battery and tool box are lockable for added security.
The cab is isolator-mounted, compliant with ROPS/FOPS standards, and positively pressurised against dust. You can choose from fresh air or carbon filters as well.
Engines fitted with a DPF can pose an increased fire risk because extreme heat can be created in regeneration mode. The new 427 and 437 don’t use DPFs, so this is no cause for concern.
Non-slip walkways and additional grab handle options allow for safe movement around the machine.