Coupling TC40DUO RHA No B frame — Heavy-Duty, Bolt-Monuted Towing Power

From Trojan, a name trusted in robust towing solutions, the Coupling TC40DUO RHA No B frame is a purpose-built, bolt-mounted coupling engineered for demanding towing, hitching, and transfer tasks. Designed for frequent use in New Zealand environments, it combines a familiar bolt pattern with a streamlined No B frame to deliver straightforward installation and dependable operation right out of the box.

Key specifications that matter in the real world

• Maximum load: rated up to 2500 kg, providing a strong balance of capacity and manageability for everyday heavy-duty use.
• Mount pattern: aligned with common NZ configurations for quick, hassle-free installation into existing setups.
• Bolts required: four 12 mm high-tensile bolts recommended for secure mounting and lasting performance under load.
• Frame design: No B frame, offering a simpler, reliable structure without sacrificing strength or stability during operation.
• Standards: complies with Australian Standard AS4177.3 (1994), ensuring regional safety and compatibility.

Who this is for and practical use cases

This coupling is a practical choice for workshops, fleet maintenance teams, and engineers who need a dependable, bolt-mounted solution that fits standard NZ mounting patterns and meets regional standards. Use scenarios include:

• Replacing worn or failed couplings on trailers, trolleys, or utility vehicles with a familiar mounting footprint.
• Retrofits where an NZ-standard bolt pattern is already in place, minimizing modification time and effort.
• Frequent loading and unloading operations where fast, secure bolt mounting translates to quicker turnarounds and consistent performance.

Installation tips and care

• Verify bolt-pattern alignment with existing mounting holes before mounting to ensure optimal load transfer and safety.
• Use four 12 mm high-tensile bolts to achieve strong clamping force and long-term stability under dynamic loads.
• Regularly inspect bolts and mounting surfaces for wear, corrosion, or deformation as part of routine maintenance.
• Consult AS4177.3 (1994) guidelines to confirm compliance and safe operation within your region.

Why TC40DUO stands out

This coupling prioritizes practical, no-nonsense design that respects local NZ mounting conventions while delivering international safety compliance. It provides dependable performance with streamlined installation, reduced downtime, and straightforward maintenance—perfect for everyday heavy-duty towing tasks without unnecessary complexity.