The transportation of massive, substantial and large parts and equipment, such as turbine blades, bridge elements, machinery or prefabricated modules, does not pose an unsolvable issue to JOST.
Even faced with difficult road conditions, there is a solution at hand with JOST products, relying on high-quality, precision products under its JOST, ROCKINGER, TRIDEC and Hyva brands.
The ROCKINGER brand comprises the core components of towing hitches (including manual hitches), traverse and towing eyes, hitch support, drawbar eyes and drawbars for transporters and trucks. ROCKINGER products are also used in agricultural applications and equip agricultural vehicles from hitches to three-point linkages. The TRIDEC brand offers steering systems and axle suspensions for trailers.
JOST’s 2025 acquisition, Hyva complements JOST’s portfolio with its globally recognised transport solutions for commercial vehicles. Hyva products are used worldwide across a range of sectors, including on-highway transport and off-highway agriculture, construction, mining, and environmental services.
Hyva provides a range of products from tipping solutions, container handling, loader cranes and truck and trailer needs. It is the world’s leading producer of front-end tipping cylinders and offers a full range of underbody and double-acting cylinders, truck and trailer components, container lifting systems (hook loaders and skip loaders), waste handling solutions, and truck-mounted cranes. JOST’s Quicke brand specialises in agricultural front loaders and equipment and extends to also include products for the mining, construction and forestry machinery industries.
In the heavy haulage transport sector, JOST’s stable of brands offer the following specialised solutions:
JOST
JOST provides a range of components for high and maximum load conditions, such as the heavy-duty fifth wheel coupling JSK50 made of cast steel. This is designed to be used for the highest loads, with imposed loads up to 50 tonnes. Then there is the JSK52 – JOST’s super heavy-duty fifth wheel coupling for use with imposed loads up to 74 tonnes. It is particularly suitable for the mining industry. Both the JSK50 and JSK52 fifth wheels are specifically designed to easily handle difficult and challenging transport conditions, using the robust JOST King pins with a diameter of 3 1/2”.
JOST has also created its JSK38CX, specifically for rugged conditions in the Brazilian and Australian markets. The 90mm heavy-duty cast fifth wheel offers unmatched strength for heavy-duty applications and with its 2-point sensor technology, truck drivers will benefit from enhanced safety and reliability. Additionally, pneumatic operation provides greater comfort when uncoupling and coupling, reduces manual effort and increases efficiency.
Another solution for specialised transport is JOST’s Modul CH heavy-duty landing gear. Advantages of the Modul CH include maximum resistance to bending due to its outer reinforcement and reinforced inner tube; heavy-duty bearing for better shock resistance; and increased static test load (66 tonnes). It also has a full-length back plate for high mounting variability and is also available with two-side operation and special crank.
JOST’s modular systems provide a great variety of tailor-made solutions and adaptation of JOST leadings axles to the individual use case. For example, load-supporting axles for all 6×2 and 8×4 vehicles can be handed-over customer-specific and are also available with an arched axle tube as a leading axle, particularly with short wheelbases.
JOST’s first product – the ball bearing turntable – produced with great success in 1952 at its Neu-Isenberg factory has also been modified and adapted for use in the heavy transport field. Today, using hi-tech technology, the double-row ball bearing turntable is extremely robust, strong and durable.
The extra-large support balls transmit the axial loads over a wide area directly onto the vertical bar of the ring parts. Horizontal forces, in pull or push direction, as well as the moment load resulting from braking and centrifugal forces, are supported by the interplay of the two ball rows. A specialised e-coating on the turntable ensures outstanding corrosion protection.
ROCKINGER
The ROCKINGER RO56E – a heavy-duty towing hitch for regular special transport applications up to 500 tonnes – has shown that heaviness is not an issue when transporting large equipment, particularly as it is suitable for all types of special transport trailers.
The RO56E’s hinged hitch head allows towing eye swivel angles, ranging between -58° and +35°, as well as with poor terrain. However, if more towing power is needed to meet the highest demands in the special transport, ROCKINGER offers the RO58 – the world’s only automatic towing hitch with a trailer load of 1,000 tonnes.
With 300 kg net weight, the RO58 is robust, but designed to be highly user-friendly with its ease of operation with a hand lever. The automatic towing hitch is approved for use in road traffic. Additionally, as counter pieces for the RO56E and RO58, ROCKINGER offers matching heavy-duty towing eyes.
TRIDEC
Properly engineered mechanical, hydraulic or electronic steering systems, as well as wheel and axle suspensions, are needed when building specialised vehicles for specific applications. This is where TRIDEC excels, developing and manufacturing bespoke steering and axle solutions for clients’ transport challenges.
TRIDEC’s hydraulic steering systems are primarily installed in specialised transport vehicles and vehicles of exceptional length or width. Due to the significant dimensions of these vehicles, installing a steering system is often necessary to satisfy legal requirements. Hydraulic steering is exceptionally well suited for extendable trailers, as there is no mechanical linkage between the fifth wheel and the axle. Optional manual steering by wireless remote control further contributes to the vehicle’s manoeuvrability.
One of its innovations in this sector is the TRIDEC Tritronic Trailer Management System, which supplements the hydraulic TRIDEC steering and suspension systems. Tritronic offers unique functionality, ease of operation and safety in special transport applications. The high-performance remote control for operating various trailer functions includes manual steering, automatic tracking, automatic ride height control, ramp control, gooseneck control, hydraulic landing gear, warning lights and much more.
Another innovative solution, particularly for low loaders, is the TRIDEC swivel axle suspension TP-O Low. With suspension travel of 600 mm, the TP-O Low offers the lowest ride height with 12 tonnes per axle line, combined with a greater steering angle than any other suspension solution.
Hyva
Hyva offers a wide range of tipping solutions tailored to meet diverse heavy haulage needs. Its selection of front-end and underbody cylinders, available with wet kit options, is designed to provide reliability, safety, and efficiency, even in demanding conditions.
As part of Hyva’s commitment to supporting the mining industry, it also includes a comprehensive range of mining cylinders, such as the Alpha UHD-PRO front-end cylinders and twin USE underbody cylinders, built for heavy-duty applications with load capacities of up to 160 tons. Additionally, Hyva has introduced its latest hydraulic suspension cylinder, developed specifically for hydro-pneumatic suspensions on wide-body mining dumpers.
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