Production Process

Engineering Workshop

McCauley Trailers Ltd has invested extensively in equipment necessary for Trailer production so that the vast majority of work can be carried out in house. This means quality can be measured and lead times are in the company’s own control. The engineering workshop has automated CNC Brake Press, Plasma, Saws, Radial Drills and Guillotine all supervised with skilled machine operators and programmed by our own in house Design and Engineering department using state of the art computer nesting software.

Chassis Beam Production

Bespoke Chassis Engineering with Submerged Arc Welding At McCauley Trailers, we don't just assemble trailers—we build the foundations. Our facility features a 14-meter automated jig equipped with an ESAB Submerged Arc (Sub-Arc) Welder, allowing us to manufacture our own bespoke chassis beams in-house.

By controlling the fabrication of beam flanges and web plates, we can customize the thickness for every trailer type. This precision engineering reduces tare weight while significantly increasing structural integrity. The deep-penetration weld achieved by this process provides a level of chassis strength that far exceeds standard competitor products. Our production capacity is highly versatile, supporting everything from 5-meter drawbars to 22-meter extending trailers, with configurations from 2 to 5 axles and capacities from 10 to 70 tonnes.

(see our videos section for full process on sub arch beam production).

Fabrication

All of McCauley Trailers start fabrication in its representative Jig, which allows for increase in quality and ensures all trailers are produced to the same standards. All fabrication staff complete a comprehensive weld test to ensure work is up to the standard required and they implement all modern MIG welding techniques. Each trailer is given a unique ID number which matches to the drawing and specification information which allows fabricators and supervisors to make sure any customer customisation is met as required before the trailer goes to paint.

Paint Preparation & Paint

Superior Surface Preparation & Finish The longevity of a McCauley trailer begins with an immaculate surface. Every chassis undergoes a rigorous preparation process: it is thoroughly degreased and sand-blasted using environmentally friendly, recyclable media.

Once cleaned, trailers enter our state-of-the-art painting facility for a dual-stage application: a protective primer followed by a high-build gloss topcoat. To ensure total consistency, we measure and record the paint thickness and RAL color code against each trailer’s unique ID number.

Advanced Protective Options We offer specialized finishes tailored to your operating environment, including:

• Marine Specification & Anti-Corrosive Coatings for harsh environments.
• Metallisation & Galvanising for ultimate rust protection.
• Multi-Tone Finishes to match your corporate branding.

Brake, Light and Flooring Installation

Precision Assembly & Systems Integration Following the painting process, each trailer enters the final assembly stage where road-critical systems are integrated. Our expert in-house pneumatic fitters and vehicle electricians install advanced braking and lighting configurations tailored to your specific requirements.

• Braking Systems: We offer a full suite of options, including Hydraulic, Air, ABS, and EBS systems.
• Lighting & Safety: From high-visibility LED and traditional bulb systems to specialized work lamps, outline markers, and wide-load boards, all installations are fully compliant with our Type Approval standards.

Specialist Flooring Solutions Our dedicated team of trailer floor carpenters ensures your deck is built for its specific workload. We utilize precision equipment to install a variety of high-grade materials, including:

• Agricultural: Durable, pressure-treated softwood.
• Commercial: High-performance Wisatrans and Keruing hardwood, available in multiple thicknesses to suit your heavy-duty hauling needs.