JCB has introduced two new wheeled loaders in its new generation of machines. The 427 and 437 replace the 426 and 436 and offer increased efficiency, lower emissions, improved operator comfort and smoother driveline technology.
Both machines are powered by the Cummins QSB 6.7–litre engine and feature an optional five-speed transmission, intelligent clutch-cut-off and automatic differential locks.
The highly efficient engine meets the EU Stage IIIB emissions standard through the use of a diesel oxidation catalyst (DOC), but without any requirement for a costly diesel particulate filter or any exhaust after treatment additives. The DOC has been designed to last the life of the engine, thereby not incurring further service cost for operators.
“With the 427 and 437 wheeled loaders, JCB has taken large machine technology and applied it to mid-weight models, bring new levels of productivity and performance to the loader market,” said JCB’s chief innovation and growth officer, Tim Burnhope. “These loaders will deliver new levels of efficiency and tonnes per litre performance to a range of market sectors, reducing our customers’ operating costs.”
With a variable–geometry turbocharger, the Cummins engine incorporates a high-pressure common–rail fuel injection system, exhaust gas recirculation and DOC. The JCB 437 delivers outstanding power, with 173hp. This is equivalent to the outgoing 436 model, but with significant fuel savings of up to 16 per cent. The JCB 427 also offers reduced fuel consumption with power of 158hp, as well as a 9.4 per cent increase in torque, taking it to 801Nm.
Both machines achieve high power outputs with low emissions, and also feature a low idle speed and an engine shutdown mode, which activates after a predetermined period to save fuel.
A ZF four-speed automatic powershift transmission comes as standard, with a new optional five-speed powershift box also available. This option delivers improved driving performance and acceleration as a result of the smaller steps between gears. A lock-up torque converter on the five-speed transmission activates in gears 2-5, reducing losses from the transmission and increasing productivity. This means customers will really notice the difference on hill climbing, roading and load and carrying duties.
An intelligent clutch cut-off system also comes as standard, for both the four-speed and five-speed transmissions, making it ideal for truck loading or tight corner manoeuvres. The system dynamically adjusts the clutch cut-off point depending on transmission output torque and brake pressure. It effectively disengages the clutch to limit tractive effort and also reduces brake wear within the new ZF axles.
When the operator presses the brake pedal, maximum power is provided to the load–sensing hydraulic system, while reducing power to the driveline. This provides much greater control at higher engine rpm and lower travel speeds, boosting productivity when loading.
The ZF automatic differential lock axle option means that customers can now choose from: standard open differential; limited slip differential; and an automatic differential lock on the front axle only. This automatic option locks the differential when required – without the operator needing to activate the system – providing increased traction and less slippage. This not only reduces wheel spin and tyre wear, but also improves fuel consumption and boosts productivity.
The new axles also benefit from wheel speed braking, lengthened service intervals to 1,500 hours and increased service life in heavy–duty applications with the option of sintered pads. Other improvements include the ability to adjust the JCB Smooth Ride System so it can be activated at any speed, allowing operators to tailor it to individual job requirements.
An optional Driveline Efficiency Package, incorporating the standard fitment of wheel speed brakes, progressive clutch cut-off plus the optional fitting of the five-speed transmission with lock-up converter and automatic differential locking axles, results in fuel savings of up to 16 per cent.
The distinctive large cab is home to a vastly enhanced interior. Leading the improvements is a new full-colour LCD monitor complete with intuitive menu system. This delivers a wide array of real–time information from the machine condition through to productivity and efficiency, including data on fuel consumption and cycle times.
This has a major advantage of ensuring operators can adapt their driving style to be as productive and efficient as possible. Reduced in-cab noise levels complete the improvements to the operator environment.
Also new on the 427 and 437 is the option of climate control, the first time this has been offered on this size of JCB wheeled loader. Customers can also specify a new Grammer Actimo XXL seat option – with full adjustment, seat heating, armrests, lumbar support and air suspension – for ultimate comfort and fatigue-free operation.
The JCB 427 and 437 are both available with a choice of conventional multi-lever layout, a single joystick with separate auxiliary control lever and a joystick with proportional control auxiliary controls built in. Add to this the range of arm options available – HT, ZX, High Lift HT and Super High Lift HT (on the 437) – and the loader can really be tailored to each individual application, whether it be loading grain lorries or a large digester hopper with a high–capacity toe-tip bucket on an Anaerobic Digester site.
New rear styling with a revised counterweight design gives the machines a more modern and aggressive look, and the sloping engine canopy at the rear has been designed to also improve all-round visibility. Mesh screens in the engine cover provide additional cooling, while improved fender coverage has been designed to work more effectively with a range of tyre widths.
The coolant tank now comes with a level sensor, reducing daily check times, while the repositioned toolbox improves access for regular service work. A Powercore air cleaner, with an innovative scavenge system, ensures that air cleaner elements remain clear for longer, reducing service cost further.
For more information visit: www.jcb.com.
