PRONAR Tandem-Muldenkipper 21 t, 26,6 m³ ohne Aufsätze, 40 km/h

Standard equipment

• Tandem chassis with rigid axles and parabolic suspension, axle spacing 1.500 mm
• Hydraulic tailgate with automatic locking and rubber seal
• Universal drawbar for low and high hitching, with fixed towing eye Ø 40
• Sprung drawbar with two steel springs and height adjustment
• Telescopic support leg with gearbox
• Two-line compressed-air braking system, drum brakes 406 × 120 mm
• Hand-crank brake
• 12 V LED lighting system with side marker lights, rear lights with protective grille
• Front wall with perforated viewing window and PLEXI pane
• Grain chute in the rear wall
• Folding access ladder and steps
• Metal covers over the wheels
• Rear underrun protection, type-approved and foldable
• Wheel chocks with holder
• Paint finish: chassis red RAL 3000, side walls green RAL 6010

Technical data

Note: All listed parameters apply to individual approval in Germany.

Product description

Tandem rear tipper with 26,6 m³ capacity without extensions

The sprung two-axle trailer carries 14.700 kg and holds 26,6 m³ – without any extensions. The body is 1.750 mm high and 6,7 m long. With the optional 600-mm extensions, the volume increases to 34,8 m³.

The largest body volume among tandem tippers

26,6 m³ without extensions is more than many tridem tippers offer. For comparison: The Tridem T682 holds 22 m³ without extensions.

The reason: a body that is 1.750 mm high throughout and 6,7 m long.

• No conversion required. If you mainly transport grain, maize and silage, there is no need to fit and remove extensions.
• More robust body. A continuous 1,75-m wall made from 4-mm sheet is stiffer than a low wall with an extension frame fitted on top.
• More leakproof. No joint between the body and extension for fine material to escape through.
• Less wear. Clip-on frames rub against the posts, and rubber seals deteriorate.

14.700 kg at 26,6 m³

This ratio gives a calculated limit of around 0,55 t/m³.

• Grain (0,7 – 0,8 t/m³) – the payload limit is reached well before the volume limit. The body remains partly filled.
• Maize silage (0,6 – 0,7 t/m³) – the payload limit is reached first here too.
• Wood chips, green waste, compost (0,2 – 0,5 t/m³) – here, volume is the limiting factor. This is the trailer’s intended application.

With extensions and 34,8 m³ capacity the limit is around 0,42 t/m³ – making the trailer suitable for very light materials.

55° tipping angle

Five degrees more than most agricultural tippers. With wet material, beet soil and cohesive soils, this determines whether the body empties completely.

The telescopic cylinder has a stroke of 2.990 mm and requires 40 litres of oil at 200 bar.

Hydraulic tailgate with rubber seal

The tailgate is raised hydraulically and locks automatically – the driver can remain seated.

The rubber seal retains fine materials. With grain, compost and wet material, it makes the difference between a leakproof load and a trail on the road.

Sprung drawbar with height adjustment

Two steel springs and height adjustment are included as standard. The suspension isolates the towing vehicle from the trailer – protecting the coupling, chassis and driver, particularly at 40 km/h.

The height adjustment allows it to be adapted to different coupling heights – a practical advantage when changing towing vehicles. A K80 ball coupling is available as optional equipment.

Universal drawbar for high and low hitching

The trailer can be hitched to tractors with a drawbar hitch at frame height as well as those with a hitch coupling – without conversion.

Self-steering rear axle as an option

The rear self-steering axle with hydraulic lock reduces the turning circle and protects the grass sward.

Please note: The axles are longer than the standard axles, and additional hydraulic connections are required.

Braking system

Standard equipment includes a two-line compressed-air braking system with 406 × 120 mm drum brakes and a hand-crank brake. Optional ALB or ALB Premium.

Why ALB is useful: The trailer weighs 6,3 tonnes empty and 21 when loaded – more than three times as much. Without load-dependent control, the wheels lock when empty. ALB is also part of the package required for EU type approval.

Grain chute and viewing window

• The grain chute in the rear wall allows grain to be discharged in a controlled manner without having to open the entire tailgate.
• The perforated viewing window in the front wall shows the fill level while driving – the only practical way to check it with a wall height of 1,75 m.

Approval

The difference is significant: There is a 3.000 kg difference in payload between individual approval and EU type approval.

Additional equipment

• AT or EU type approval, including documents
• K80 ball coupling
• Hydraulic support leg, single-acting or foldable (no extra charge)
• 600 mm extensions made from 2-mm sheet with perforated viewing window for 34,8 m³
• Two-line compressed-air braking system with ALB or ALB Premium
• Rear self-steering axle with hydraulic lock
• Tarpaulin with frame and platform, optionally for the 600-mm extensions
• Discharge chute
• Spare wheel, plastic tube for vehicle documents
• Warning triangle for slow-moving trailers

Applications

Wood chip and biomass logistics, biogas plants and substrate logistics, compost logistics, maize harvesting and silage transport, arable farms, agricultural contractors, local authorities.

Operating notes

• Confirm the approval route before ordering – there is a 3.000 kg difference between individual approval and EU type approval.
• Check the towing vehicle’s drawbar load: up to 3.000 kg.
• When tipping, ensure the ground is level and firm – with a body height of 1,75 m and a stroke of 2.990 mm, the centre of gravity is high.
• Do not raise the body beneath overhead power lines.
• Before tipping, check that the tailgate can open freely.
• After unloading, check that the body is empty.
• The technically permissible 23.000 kg applies only for on-site use.
• The self-steering axle requires additional hydraulic connections and longer axles.
• The tarpaulin is not available without extensions in the CoC version.
• Check the rubber seal on the tailgate regularly.
• Retighten the wheel nuts after the first few hours of operation and regularly thereafter.

Frequently asked questions

How much does the tipper hold without extensions?

26,6 m³. The body is 1.750 mm high and 6,7 m long – so the trailer needs no extensions for most harvested crops.

How much can it carry?

14.700 kg at a permissible gross weight of 21.000 kg. A technically permissible weight of 23.000 kg applies for on-site use, and 18.000 kg with EU type approval.

What materials is the trailer suitable for?

Light materials. With a capacity of 26,6 m³ and a payload of 14,7 t, the calculated limit is around 0,55 t/m³ – wood chips, green waste and compost make full use of the volume, while grain reaches the payload limit first.

What distinguishes the XL version?

The body is 1.750 mm high throughout. It holds 26,6 m³ without extensions – considerably more than standard versions in the same size class.

Why is a continuous body better than extensions?

It is stiffer, more leakproof and less prone to wear – no joint between the body and extension, no rubbing against the posts and no rubber seals to deteriorate. It also eliminates the need for conversion.

What tractor do I need?

136,7 PS or 100,5 kW, and a coupling rated for a 3.000 kg drawbar load. Tipping requires 40 litres of oil at 200 bar.

How far does the body tip?

55° to the rear – five degrees more than most agricultural tippers. With wet material, this determines whether the body empties completely.

How can I see the fill level?

Through the perforated viewing window with PLEXI pane in the front wall – the only practical way to check while driving with a wall height of 1,75 m.