The 457 is the first large JCB wheel loader to meet Tier IV Final emissions standards, with the adoption of a powerful MTU diesel engine that is perfectly matched to the machine’s operating duties.
JCB is taking the wraps off a new wheel loader design — complete with the all new “JCB CommandPlus” cab. The powerful JCB 457 is the first machine to show off the completely new cab structure, engine cover and rear counterweight design, all of which contribute to improved visibility, lower noise levels, increased internal space and an enhanced working environment for the operator.
In addition, the 457 is the first large JCB wheel loader to meet Tier IV Final emissions standards, with the adoption of a powerful MTU diesel engine that is perfectly matched to the machine’s operating duties. The engine contributes to a massive fuel savings of around 16 percent compared to the previous model. As with other JCB machines, the engine in the 457 meets Tier IV Final without the need for a costly diesel particulate filter (DPF), relying on an efficient combustion process, with a selective catalytic reduction (SCR) system and an exhaust fluid additive to meet the regulations, according to the manufacturer.
New JCB CommandPlus Cab
The 457 is the first machine from JCB to utilize the company’s next generation JCB CommandPlus cab, offering operators the ultimate in comfort. This totally new ROPS structure has A pillars that have been moved out to the same width as the rear of the cab, providing a larger interior with a panoramic front windscreen. The machine features JCB’s command driving position, with revised pedals, a new adjustable steering column and seat-mounted hydraulic controls.
All switches and auxiliary controls have been repositioned on the right hand A pillar, providing the operator with a simplified interior and easy access to all machine controls. The 457 has two full color LCD screens, one in the central console and a second at the top of the right hand A pillar. This second screen incorporates access to the loader’s operating menus and acts as a monitor for the machine’s rear view camera.
The JCB CommandPlus cab delivers increased internal space as the heating, ventilation and air conditioning system has been repositioned outside the main cab structure. This provides additional storage for the operator, both behind the seat and in pockets in the front and side consoles. The new cab, in combination with the MTU engine, a hydraulically-driven on-demand cooling fan and the repositioned air conditioning system, contributes to a huge reduction in internal noise levels, from 71dB(A) to 68dB(A), subject to final production tests.
Operators also benefit from LED lighting all around and the option of electrically adjustable and heated mirrors, for maximum visibility in all operating conditions. The rear view mirrors are now mounted in front of the repositioned A pillars, making it easier for the operator to see all around the machine. The cab door is hinged at the front, allowing easier access and exit from the machine for the operator from the steps. This also makes it easier for technicians to access the engine for regular maintenance and service work.
More Power, Lower Emissions
The JCB 457 is powered by a 7.7-L MTU Tier IV Final engine, delivering 258 hp (193 kW), up from 250 hp (186 kW) on the previous machine, despite the smaller engine capacity. More importantly, the engine delivers this increased output at lower rated engine revs, cutting fuel consumption, noise and emissions. JCB also has fine-tuned the match between engine, torque converter and transmission, to perfectly match the engine with both the standard four-speed and optional five-speed transmissions. This has resulted in fuel efficiency gains of up to 16 percent. As with other JCB machines, the 457 achieves Tier IV Final emissions standards without the requirement for a costly and complex DPF. This reduces cost and service time for customers, increasing uptime and profitability.
The most visible change to the 457, aside from the new cab, is the adoption of a sloping one-piece engine canopy. This engine cover can be electrically raised away from the cab to provide improved access to the engine and drivetrain for regular maintenance. The rear section also can be hinged away from the machine to provide access to the cooling pack, which now features a swing-out hydraulically-driven, on-demand cooling fan situated at the rear of the machine.
The new JCB wheel loader design, with improved operator environment, easy access to regular service points and class-leading levels of comfort and control, will be adopted by smaller models in the line as they move to Tier IV Final emissions standards over the coming months.
The Tier IV JCB 457 will come as standard with JCB’s LiveLink telematic system. This provides fleet managers and owners with remote access to real-time fuel consumption and machine working data, including operating hours and fault codes.
JCB LiveLink also allows customers to set working hour curfews, outside of which the machine will not function, along with geofencing. This permits the owner to set a geographical area in which the machine can work. If the loader is taken out of this area it will not start, preventing theft from the job site.
The 457 is available with four loader arm options, to suit a range of industry applications. These include four-ram parallel lift geometry HT arms that provide high torque throughout the full working range. HT arms are ideal for tool carrying applications such as forks and grapples. The HT design comes in both standard and super high lift configurations, allowing the machine to load high sided bulk trailers and to stockpile materials.
Traditional Z-bar linkage arms are designed to provide maximum breakout forces, ideal for extraction applications. Again, the Z-bar set-up is available in standard or high lift for truck or hopper loading. All loader arm options can be ordered with two, three or four-spool hydraulic valve options to work up to two auxiliary controls simultaneously. Flow rates also can be fine-tuned through the in-cab display using the rotary control to meet attachment demand. Quick-hitches are available for both Z-bar and HT loader arms.
The 457 is available with three axle options and a range of tire combinations. There are standard, limited slip and automatic locking differentials, which deliver optimum performance on all types of ground. The choice of tires, axles and the four or five-speed transmissions (the five speed transmission comes with torque lock) allow customers to tailor the machine to their individual application.
A Wastemaster package is available with robust guards, a front chassis guard and a reversible cooling fan with a swing-out option to minimize downtime in dusty environments. Quarry-specific options also can be ordered from the factory, including blue reversing lights, green operator presence beacons, reversing cameras, red and white chevrons and rear object detection systems.
For more information, visit www.jcbna.com.