Quick Specs

Maximum Engine Power

In a world of tough working conditions where everything’s hard going, the new JCB JS305 tracked excavator makes things easy. In short, operation, maintenance and money saving are all as easy as can be.

The JS305’s engine and hydraulics are designed to work with productivity in mind, while its simple mechanical fuel injection system can cope with lower fuel quality. Quite simply, you can move more material for less cost. Your world is hard enough. This excavator just made it a whole lot easier.


  • 7.2-litre JCB DIESELMAX engine with rugged in-line fuel injection
  • Huge 222.6kN bucket tearout make fast cycle times easy
  • Heavy duty construction with premium componentry to cope with anything
  • Switchable Eco mode to minimise fuel consumption
  • Quiet, ergonomic and comfortable operator environment
  • Easy and intuitive to service; LiveLink telematics as standard

The new JS305’s JCB DIESELMAX engine has an Eco mode which reduces fuel consumption whilst maintaining substantial productivity levels.

Auto idle reduces engine speed to 1100 rpm after 6 seconds of machine inactivity. The engine speed is restored as soon as you operate your excavator again.

For even more fuel savings, you can use our innovative one-touch idle feature to reduce engine speed at the push of a button.

Specify your JS305 with a HM270T hydraulic breaker, which can be fitted at our production facilities and arrive pre-installed with your new machine.

To make oil flow as precise and efficient as possible, we’ve optimised the hydraulic pump settings and revised the spool configuration within the main valve block. The system now delivers only the flow you need for the job at hand.

Our innovative hydraulic regeneration system recycles oil across the cylinders for faster cycle times and reduced fuel consumption.


The 6-cylinder 7.2-litre JCB DIESELMAX engine fitted to the JS305 tracked excavator produces its peak power (221hp) and torque (960Nm) at a low 1300rpm. This allows fuel efficient matching of the engine and hydraulics.

With a massive 222.6kN of bucket tearout, fast cycle times are assured in all applications. The intuitive multifunction operation makes simultaneous tracking and excavating smooth and fast.

A JCB JS305 is an excavator that provides a solid, stable work platform for fast cycle times.

Strengthening ribs in the idler area provide the force and durability you need to work in the toughest applications.

The control valve optimises hydraulic oil supply to different functions during combined operation. This multifunctioning prowess helps you to achieve fast cycle times.

Simultaneous tracking and excavating is smooth and fast with an intuitive multifunction operation. For maximum power and productivity, choose the Power+ mode from the rotary controller.

Choose from a range of hydraulic pipework options and you’ll be able to use your excavator with a variety of JCB attachments for ultimate versatility.


A 70/30 front screen split gives the JCB JS305 tracked excavator excellent front visibility. A clear view of the front right track provides easy, safe trench digging and comfortable manoeuvring.

All-round visibility is superb, with a large glass area on the right-hand-side and top corner of the cab. An innovative low-level bonnet allows clear rearward views. To minimise noise and vibration, the cab sits on six viscous rubber mounts.

Your excavator operators are kept abreast of all important information via the 3.5” display. This can be accessed via the new rotary controller.

To minimise noise and vibration, the cab sits on six viscous rubber mounts. Ventilation is plentiful when you open the cab roof hatch and the rear sliding window. There’s also a spacious luggage tray behind the operator’s seat.

A roomy floor area with large high grip rubber-coated pedals and a rubber footrest is a perfect setup for easy and precise tracking. A spacious stowage area behind the seat provides plenty of room for an operators’ personal items.

For the ultimate in precise control, the new JS305 excavator has a rotary throttle controller. There are also three work modes to tailor your machine to any application: Eco, Power and Power+.

Ventilation is plentiful when you open the standard cab roof hatch and the rear sliding window.

JCB’s climate control option offers a precisely controlled cab temperature with fresh or recirculated air.


A large glass area and low bonnet line afford superb visibility. This is complemented by a full set of side and rear view mirrors, six work lights, and an optional rear view camera.

The JS305 tracked excavator’s bonnet opens front-to-rear for easy and safe engine service access.

JCB’s Safety Level Lock fully isolates hydraulic functions to avoid unintended movements. Our 2GO system means a new JCB JS305 can only be started in a safe locked position via two separate inputs.

You’ll find that the steps and platforms on this excavator have anti-slip punched steel plates for optimum grip, even in wet or icy conditions. Bolt-on plates have recessed bolts to reduce trip hazards.

To prevent engine damage in arduous conditions, we fit an engine overheat safety system as standard.

LiveLink telematics are fitted as standard to your excavator too. This innovative JCB feature helps you to maximise security and fleet utilisation, and also allows you to monitor useful information like fuel usage on different shifts.


The electrical system on the new JS305 excavator is highly capable yet uncomplicated in design, which improves serviceability and reduces maintenance over the life of your machine.

Because they’re mounted side by side on a JCB JS305, the engine radiator, hydraulic cooler and intercooler can be serviced individually yet cleaned easily. Fluid filters (engine oil, hydraulic oil and fuel) are centrally located for fast, easy servicing.

It's easy to keep track of maintenance on this excavator because the in-cab monitor displays useful reminders. You can also track your excavator using JCB LiveLink telematics to stay fully abreast of all upcoming maintenance requirements.

All daily check points are accessible from ground level, ensuring easy and safe servicing. The electronic monitoring system, meanwhile, automatically checks engine oil and engine coolant levels on machine start-up.

By using graphite impregnated bronze bushes, we’ve increased the JS305 tracked excavator’s boom and dipper greasing intervals to 1000 hours for normal applications. Engine oil and filter changes are only required every 500 hours; hydraulic oil change intervals are 5000 hours; while hydraulic filters need to be changed every 1000 hours. All in all, we give you the maximum uptime by minimising maintenance time.

To prevent blockages in the cooling pack, we fit a fly-mesh guard. The condenser unit is hinged so it swings out easily, providing access to other coolers for cleaning.

With the optional auto lubrication kit, your excavator will take care of its own greasing requirements.

The Powercore air filter combines with a cyclonic engine fan scavenge system to give double the filtering capacity of a standard air filter. This is a longer life system with fewer components, offering higher efficiency and greater engine protection.

JCB JS305 bonnets open and close easily with gas-assisted cylinders, and the service bays are large and wide for good access. There’s a large 590-litre fuel tank to allow as many operating hours as possible between refills.


A JCB JS305 excavator’s reinforced boom and dipper is made of high tensile strength steel, with internal baffle plates for long life durability. In addition, we fit heavy-duty wear strips at the dipper end for increased durability.

JCB’s DIESELMAX engine has a mechanical in-line Bosch fuel injection system. This rugged component can tolerate poor fuel quality. A multi-stage fuel filtration system which protects against a wide range of contaminants as small as two microns.

Our advanced manufacturing and assembly processes produce high precision premium quality assembled components. We then add the best components in the industry, including Berco running gear, Kawasaki pumps and Kayaba main control valves.

The high-strength undercarriage of a JCB JS305 tracked excavator uses a fully welded X-frame construction for long-term durability even in the most demanding applications. The turret is welded to both the upper and lower undercarriage frame.

A closed box section revolving frame increases strength and reduces stress. It’s also highly resistant to impact damage to cope with the kind of harsh life expected of any excavator.

With a heavy duty lower frame and upper structure, as well as a high strength boom and arm, this excavator is designed to excel at tough work like quarry applications.

Grouser plates are a substantial 12mm, offering more protection than the competition.

All major components are intelligently housed inside the upper structure to protect from damage. A belly guard and boom work light guards are standard, and front cab mesh an option.

A mechanical override throttle is located in the cooling pack service bay. Revs can be set to a constant level, ensuring that no matter what happens, the job still gets done.

We use finite element analysis with extensive rig and endurance testing to make key components on this excavator last longer. For maximum durability and support, we’ve made the upper frame as rigid as possible.

A belly guard, front cab mesh and boom work light guards are all fitted as standard, while grouser plates are a substantial 12mm, offering more protection than the competition.