Sturdy design and well thought out in every detail: the two-axle Stone Master semi-trailer tippers are always the right choice

Companies that use two- and three-axle tractor units can swap semi-trailer tippers more flexibly if they have only two axles. The Fliegl range includes the ZHKS 330 Stone Master in the Greenlight version specifically with these mixed vehicle fleets in mind. These tippers are the universal solution wherever an optimum unladen weight/payroll ratio is required and it is necessary to switch constantly between two- and three-axle tractor units.

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New: The Stone Master can carry a payload of approximately 28,500 kg. This is possible thanks to an extremely low unladen weight of only about 4,500 kg. And this in turn is the result of a lightweight chassis manufactured from high-strength fine-grain steel. The patented “Curved” chassis is used. The well-known advantages of steel in chassis construction mean that the “Curved” chassis can almost match the weight of a more expensive and vulnerable aluminium chassis. The low neck height of only 180 mm reduces the overall height of the body – the centre of gravity of the load is therefore lower, ensuring greater driving safety and tipping stability. The tapered body in original Hardox HB 400/450 with its angled bulkhead is optimally matched to the “Curved“ chassis. This combination ensures high stability and at the same time excellent weight balance. Moreover, the tapered design means that a smaller tipping angle is required to ensure optimum discharge of the load. Despite its comprehensive equipment and volume of around 24.5 m³, the Stone Master on display weighs only approx. 4,500 kg.

The trough-shaped body of the vehicle on show has a height of only 1,450 mm. This ensures a low centre of gravity, while the low loading height facilitates loading from the side, and the top edge of the body does not protrude beyond the tractor unit, which significantly reduces consumption. The axles of all vehicles from the Triptis plant are calibrated by laser. This reduces wear and also minimises fuel costs.

Technical data: This semi-trailer tipper is designed primarily for heavy dutyuse on construction and demolition sites. Both the curved chassis and the robust body in original Hardox HB 400/450 take short distances and the high number of tipping cycles per day with high loads equally in their stride. But over long distances, too, the ZHKS 330 offers real advantages for the operator. The combination of “Curved” chassis design, tapered body and convex diaphragm rear panel ensures an excellent drag coefficient and cuts fuel costs into the bargain.

And the fact that the body is only 1,450 mm high and does not protrude beyond the tractor unit reduces additional air resistance. In-house measurement indicates that this alone reduces fuel consumption by up to 8%. The sloping bulkhead makes it easier to discharge even cohesive loads and ensures better weight distribution. The automatic lift axle, which can be operated from the tractor unit as an option, can also be used as an approach aid. Lifting the axle increases the semi-trailer pressure, giving the tractor unit sufficient grip, even on slippery ground.

Advantages: In addition to robust technology, the environment and sustainability are important priorities. The “Curved” chassis is manufactured entirely in Triptis - eliminating the need for transportation. This shows once again that for Fliegl, sustainability is a priority right from the design process and that it applies this principle in all its activities: Economy and ecology go hand in hand and lead to maximum efficiency. The curved chassis has many other points in its favour. In addition to offering high stability, it makes coupling much easier, as it gives the operator a better view of the critical area. Axle load detection in the semi-trailer, controlled via the CAN bus signal from the EBS, informs the driver in the cab reliably of the load weight. Original Hardox HB 400/450 steel is used exclusively in the body. This ensures outstanding abrasion resistance even with abrasive loads and at the same time means low weight. The diaphragm rear panel typical of Fliegl trailers is designed as an externally applied pendulum flap and locked with two external hooks. Additional clamping bolts with knee joint locks ensure perfect sealing of the tail gate.

Options: All vehicles in the Stone Master Greenlight series are available with a wide range of options offering high utility value in everyday use and facilitating the work of the driver. The automatic axle lift with approach aid is also helpful, as is automatic lowering during the tipping process. The rolling tarp with central locking can be reached safely and conveniently via the standing platform. Holders for shovel and broom are within easy reach, while a leaning ladder can be hooked on to the top rail for easy access to the body. LED working lights, aluminium rims and automatic lowering during tipping ensure safety, low weight and convenience in use.

Summary: The ZHKS 330 Stone Master two-axle semi-trailer tipper in the Greenlight version is definitely the first choice for use in mixed vehicle fleets. The tapered steel half-shell body in original Hardox HB 400/450 offers a volume of 24.5 m³, while the steel chassis in “Curved” design and only 180 mm high ensures high stability and extremely easy coupling. The semi-trailer tipper is suitable for a wide range of applications and is available from an unladen weight of around 4,500 kg. It low weight, user-friendly details, a comprehensive range of optional equipment and low life-cycle costs make this semi-trailer tipper equally perfect for fleet use and for operators with individual wishes with respect to equipment and appearance. The low unladen weight means a higher payload. Higher loads per trip mean efficient use of fuel. The “Greenlight” tippers minimise costs and maximise environmental protection. The body in original Hardox HB 450 stands for a long service life, even in heavy use. The electric sliding tarpaulin offers convenience and safety for the driver, while the round-bellied body means a low centre of gravity and significantly reduces drag coefficients. Lower emissions mean greater protection of the environment: Fliegl’s Stone Master vehicles represent an active commitment to sustainability. Prompt availability, even of large quantities, is ensured through series production at the Triptis site.