Most compact machine H33-4

The Hofmann H33-4 is the most compact self-propelled road marking machine in Hofmann’s large-capacity range, combining very high material volumes with strong hill-climbing capability in a relatively tight footprint. Positioned as the go-to machine for high-output road and airfield marking programmes, it is built around a robust 7-tonne construction machinery axle and supports the full spectrum of Hofmann application technologies. Its combination of raw capacity and manageable dimensions makes it a strong choice for national highway contractors, airport operators, and specialist marking teams working across diverse project types.

The Hofmann H33-4 is powered by a water-cooled Kubota 4-cylinder turbodiesel engine with a 3,800 cm³ displacement. Variant I (Non-Label, comparable to EU Stage II / EPA Tier 2) delivers 74.0 kW at 2,600 rpm, while the cleaner Variant II (EU Stage V / EPA Tier 4 Final) produces 86.4 kW at 2,600 rpm and adds a diesel oxidation catalyst, diesel particulate filter, SCR catalyst with AdBlue®, and charge air cooling. Drive comes from a heavy-duty construction axle with hydraulically switchable speed ranges combined with a high-speed hydraulic motor, enabling strong performance on gradients as well as standard road surfaces. The automatic fan speed cooling system adjusts continuously to ambient temperature and load, reducing noise under normal conditions and delivering higher cooling capacity when the machine operates under stress.

Five application technologies are supported — cold paints, 2-component cold plastics, sprayable 2K cold plastics, thermoplastics, and sprayable thermoplastics — with container capacities reaching 1,080 litres for cold paints, 1,000 litres for sprayable 2K cold plastics, 800 litres for sprayable thermoplastics, and 710 litres for thermoplastic systems. Two pressurised bead tanks (2 × 160 litres, rated to 3 bar) are fitted as standard, with bead filler openings positioned at optimal loading height on the outer sides of the machine. Compressed air output is selectable between 2,600 and 3,500 litres per minute at 7.5 bar. Real-world deployments documented by Hofmann include airport marking at Munich Airport, Hamburg Airport, Abu Dhabi, Bahrain, Tripoli, and Alicante, as well as thermoplastic Audio Tactile Marking (ATM) work in Australia.

Leader Infra supplies the Hofmann H33-4 as part of its heavy-duty road marking machine portfolio, offering one of the highest-capacity options available from the Hofmann line-up. The operator workstation relocates to either side without guide rail pre-installation, and the layout of controls and monitoring elements can be adjusted to individual requirements. A sliding, retractable gun carrier handles both centre-line and lateral marking positions, and the machine’s generous ground clearance supports service access from below — reducing maintenance downtime in the field.

FAQ — What is the significance of the H33-4’s 7-tonne construction machinery axle compared to standard road marking machine drive systems? Unlike the hydraulic wheel-motor drives used on lighter machines, the H33-4 uses a purpose-built heavy construction axle combined with a high-speed hydraulic motor and hydraulically switchable speed ranges. This arrangement delivers substantially greater traction and climbing power, making the machine reliable on steep gradients, uneven surfaces, and demanding site conditions where a standard road marking machine would struggle under the load of very large material tanks.