JS305 JCB excavator specs & Dimensions (2019 - 2026)

Easy in a hard world.

In a world of tough working conditions where everything’s hard going, the JCB JS305 makes things easy. That’s because it’s been tailored to your applications, your business, your world. With a simple mechanical fuel injection system that tolerates lower fuel quality and an engine and hydraulics designed to work with productivity in mind. We designed it to be easy to operate, easy to maintain and easy to save money. Quite simply, the JCB JS305 has been designed to move more material for less cost. Your world is hard enough. JCB just made it a whole lot easier.

The power to excel.

The 6-cylinder 7.2-litre JCB DIESELMAX engine fitted to the JS305 produces its peak power (221hp) and torque (960Nm) at a low 1800rpm. This allows fuel efficient matching of the engine and hydraulics. With a massive 222.6kNm 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 provides a solid, stable work platform for fast cycle times.

DIESELMAX quality.

JCB's DIESELMAX engine has a mechanical in-line Bosch fuel injection system. This rugged premium brand component allows you to work in areas where fuel quality is poor. The new JS305 benefits from a multi-stage fuel filtration system which protects against a wide range of contaminants as small as two microns.

MAX efficiency.

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, adjustable up to 30 seconds of machine inactivity. The engine speed is restored as soon as you operate your excavator again. Our innovative hydraulic regeneration system recycles oil across the cylinders for faster cycle times and reduced fuel consumption.

Fuel Savings

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

Maximum uptime.

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. The end result for you? Far 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.

Made to be better.

We use high tensile strength steel to construct the reinforced boom and dipper. Internal baffle plates help to ensure long life durability – likewise heavy-duty wear strips at the dipper end. Advanced manufacturing and assembly processes help to guarantee a very high level of precision and quality in our components.

Built to last.

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. We use finite element analysis with extensive rig and endurance testing to make key components last longer. The high-strength undercarriage of a JCB JS305 uses a fully-welded X frame construction for long-term durability even in the most demanding applications. A closed box section revolving frame increases strength and reduces stress. It's also highly resistant to impact damage. For maximum durability and support, we've made the upper frame as rigid as possible.

Operator Comfort

Here at JCB, we take operator comfort very seriously, not least because it boosts your productivity. The new JS305 is therefore a very comfortable and ergonomic excavator, designed to keep operators feeling fresh and alert for longer.

A great place to work.

To minimise noise and vibration, the cab sits on six viscous rubber mounts. JCB’s climate control option offers a precisely controlled cab temperature with fresh or recirculated air. A roomy floor area with large high grip rubber-coated pedals and a rubber footrest is a perfect setup for easy and precise tracking. Ventilation is plentiful when you open the standard cab roof hatch and the rear sliding window.

See clearly.

A 70/30 front screen split gives the JCB JS305 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. Operators are kept abreast of all important information via the 3.5” display. This can be accessed via a new rotary controller. A spacious stowage area behind the seat provides plenty of room for an operator's personal items.

Proper protection.

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 is 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.