JCB Prepares the 40th Anniversary of Loadall

As JCB prepares to mark the 40th anniversary of Loadall production later this year, Sawit Indonesia Magazine takes a tour of the UK production line for a detailed look at the manufacturing processes that make the company’s telescopic handler the biggest selling in the world.

From the first Loadall in 1977 JCB built its 200,000th telehandler in 2016 and this year celebrates four decades of this iconic machine. There are now more than 30 Loadall models, though the number of engine, transmission, boom and cab options results in over 1,000 machine configurations being built at the heart of JCB’s Rocester facility.

Over 35,000 tonnes of steel a year goes into the construction of chassis, stabiliser legs and booms.

Sheet steel is fed into two main production lines, one for booms and one for chassis, with a side production area for stabiliser legs. The steel is cut using computer-controlled laser and CNC plasma cutting machines.

A 650-tonne press is used to form the box section of the boom, which is tack welded with initial fitting of bushes, while chassis sides are drilled and tapped with all necessary holes. It takes 45 minutes to make two chassis sides, with a further 7-12 minutes of drilling and tapping.

All chassis and boom structures are tack welded by hand. Up to 70% of the chassis and boom weld is then carried out by robot welders, with manual operators completing the difficult to access welds. An incredible 14,509,818m of welding wire is used in the Loadall facility annually.

A twin boring machine completes a final bore of the boom mounting points, to ensure that the two holes are perfectly aligned. Two £1.2m computer-controlled machining centres drill, tap and finish the boom sections ready for assembly.

Booms, chassis and stabilisers are all fed through a two-hour paint process, starting with a shot blast to remove contamination and prepare the steel for painting.

All components are painted before assembly to ensure a high-quality finish. JCB gets through 73,000 litres of primer and 50,000 litres of gloss each year painting Loadalls.

Finished components are baked at 90-120°C to provide a robust, protective covering for the machine. While yellow is the most popular colour, customers can also order Loadalls in their own livery.

There are 300 staff in manufacturing and more than 460 work in Loadall assembly. Sub-assembly sections sit to either side of the main assembly lines, preparing wiring harnesses, engines and transmissions, cabs and axle assemblies. These feed into the main lines as required, ensuring that production moves swiftly through the process.

JCB axles are fitted with wheels and attached to the chassis. Hydraulic valve blocks, rams and cylinders from the hydraulic component division within the Rocester site go on next.

Engines from JCB Power Systems are attached to transmissions from JCB Transmissions, with exhausts and other ancillaries added on the sub-assembly lines.

There are around 3,000 components in a JCB Loadall and with up to 1,000 configurations, every build is strictly coordinated. With 35 build stages, it takes around eight hours to fully assemble a Loadall.

Loadall cabs arrive fully finished and these are installed along with the machine’s cooling pack. Three inspection points ensure that every machine meets with JCB’s exacting quality standards.

Oils and fluids are added and the engine started. Every Loadall goes on to a rolling road and the engine and transmission are put through 13 minutes of speed tests, to calibrate the driveline.

Once warmed through, the Loadalls enter a UVXPOSE booth that uses ultra-violet light to check the integrity of hydraulic componentry. The initial fluids contain a tracing additive that is easily visible under UV light.

An external test facility follows, where 10 operators carry intensive operational testing. This includes warm-up, steering tests and weight tests. Attachments that have been ordered are also installed and tested.

The machines then enter a second UVXPOSE dark room for checking as part of an additional quality sign-off, before heading to the pre-delivery inspection centre.

In August 2016, JCB opened the Loadall Customer Focus Centre. Every machine comes from pre-deli very inspection (PDI) to the CFC, where it is checked over again. Decals are attached and customisation completed, with the addition of toolboxes, lighting and other optional equipment.

 

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