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.
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. 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.
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.