JCB backhoes - 70 years and still counting
It's remarkable that it is now 70 years since the first JCB backhoe loader was released on an unsuspecting world.
Comprising six models, the Series III offers lift capacities from 3.2 to 5.6 tonnes and a maximum reach of 6 to 9 m. Obviously a centre point of the machine, the cabin is said to be 12% larger than the previous version but has the same layout and function-grouped switches, making it easier for JCB-familiar operators to switch easily between different machines.
A wide door opening and adjustable push-away steering column with working position memory make it easy for operators to enter and exit the cab. A lack of bare metal within the cabin is said to reduce noise by 50% to a best in class 69dBA rating.
Further design changes see the removal of the front cross-member from the roof area and a 14% larger glazed area, allowing operators a better view of the raised boom and implements. The large front wiper and two roof-mounted wipers sweep 92% of the curved windscreen glass.
Improved airflows improve the demisting and defrosting functions, and storage includes a lift-out bin behind the seat for documents, tools, food and drinks.
A larger, tablet-like digital display is attached to the windscreen glass and this has a mobile phone holder, Bluetooth, integrated microphone and speakers for hands-free calls and entertainment.
On the operational front, a new sway control levelling system enables the operator to level the machine before boom lift when working on sloping or rough terrain. This is effected by a double-acting hydraulic cylinder attached to the chassis and front axle and electro-hydraulic cab control. The system is available on Agri Plus and Agri Super versions of the 542-70 and high-lift 536-95 (3.6 t lift, 9.5 m reach).
Models are powered by the 4.4 L JCB EcoMAX engine delivering 109 hp or 125 hp, while high spec units are fitted with a 4.8 L version delivering 145 hp. All engines meet Stage IV emission levels using SCR and a diesel oxidation catalyst.
Transmission choices include a 33 km/h 4-speed JCB Powershift manual, the 40 km/h TorqueLock4 transmission with direct-drive torque converter lock-up in top gear and the 40 km/h 6-speed JCB Autoshift transmission. The unique JCB DualTech VT unit combines hydrostatic and powershift elements in one transmission.
Options include twin-line air trailer braking with electrics and an ABS socket, or a combination of twin-line air and single-line hydraulic braking for trailed equipment.
