PRONAR Bauanhänger Tandem, 21 t, 10-mm-Boden, Kippwinkel 60°
€28,790.00
Standard equipment
- Chassis made from welded rectangular closed sections
- Tandem running gear with 4 parabolic springs, rigid axles, 406 × 140 mm drum brakes, axle spacing 1,500 mm
- Hydraulic tailgate, 370 mm high
- Two tipping cylinders
- Sprung drawbar with leaf spring, with height adjustment
- Top hitch with rigid towing eye Ø 40
- Hydraulic support leg with shut-off valve
- Dual-line compressed-air brakes
- Handbrake
- Lighting system with side marker lights, rear lights with protective grille
- Body support for maintenance work
- Folding access ladder
- Plastic mudguards front and rear
- Rear underrun protection, type-approved and foldable
- Wheel chocks with holder
- Paint finish: chassis burgundy, sides black-grey RAL 7021
Technical data
| Manufacturer | PRONAR |
|---|---|
| Product type | Tandem construction trailer with tipping body |
| Permissible gross weight | 21.000 kg |
| Technically permissible gross weight (on-site use) | 24.000 kg |
| Unladen weight | 6.160 kg |
| Payload | 14.840 kg |
| Load volume | 10,6 m³ (up to 21,3 m³ with extensions) |
| Internal body dimensions L × W × H | 5.600 × 2.410 × 800 mm |
| Overall dimensions L × W × H | 7.360 × 2.550 × 2.470 mm |
| Side height | 800 mm |
| Sheet thickness, floor / sides | 10 / 8 mm |
| Platform height | 1.475 mm |
| Track width | 2.060 mm |
| Suspension | Parabolic spring suspension |
| Nose weight | 3.000 kg |
| Tyres | 385/65 R 22,5 RE |
| Permissible speed | 40 km/h |
| Tipping system | rear tipping, two tipping cylinders, tipping angle 60° |
| Telescopic cylinder | Stroke length 1.980 mm, oil requirement 36 l, operating pressure 200 bar |
| Required tractor power | 124,8 PS / 91,7 kW |
Note: All parameters listed apply to individual approval in Germany.
Product description
Construction trailer for heavy materials
The sprung tandem carries 14.840 kg and tips backwards at 60°. The floor and sides are substantially thicker than those of agricultural tippers, at 10 and 8 mm respectively.
10 mm floor – that says it all
For comparison: agricultural tipping trailers in the same size class typically have a floor thickness of 4 to 6 mm.
Why this is necessary in construction work:
- Impact during loading. Gravel, rubble and construction waste fall from the excavator bucket onto the floor from a height of several metres – not flowing gently like grain, but landing hard in concentrated spots.
- Abrasion. When tipping, sharp-edged material slides across the floor. Every load wears material away.
- Service life. A worn-through floor means the end of the body – repairs are rarely worthwhile.
For particularly demanding applications the manufacturer offers the body in HARDOX 450 HB – wear-resistant steel with an 8 mm floor and 6 mm sides. Despite the lower sheet thickness, its greater hardness makes it considerably more durable.
60° tipping angle
This is the steepest angle in the PRONAR tipper range – agricultural tippers are set at 50°.
Why this matters for construction waste: Wet clay, excavated material and cohesive soil stick in the body at 50°. Those extra ten degrees determine whether the body empties or someone has to help it along with a shovel.
Two tipping cylinders distribute the force and keep the body aligned as it is raised.
14.840 kg payload
With a body volume of 10,6 m³, the body is designed for heavy materials: 10,6 m³ of gravel weighs around 16 tonnes – so payload, not volume, is the limiting factor.
For on-site use a technically permissible weight of 24.000 kg applies.
Three body variants
| Version | Features |
|---|---|
| Standard (supplied as standard) | Internal width 2.410 mm, floor 10 mm, sides 8 mm |
| Tapered, S235 | 2.196 / 2.300 mm, with two-leaf tailgate and grain chute – more economical |
| HARDOX 450 HB | Floor 8 mm, sides 6 mm – for sharp-edged material |
The tapered body with grain chute also makes the construction trailer suitable for agricultural tasks – and it even costs less than the standard version.
Up to 21,3 m³ with extensions
The optional 800 mm extensions with Plexiglas viewing window and rear swinging flap almost double the volume.
When is this useful? For light materials such as green waste, wood chips, insulation waste and recyclable materials. Please note: The extensions fit only the standard body with an internal width of 2.410 mm.
Running gear options
The trailer is supplied as standard with parabolic spring suspension and rigid axles. The following optional equipment is available:
- BOGIE suspension with leaf springs and hydraulic rear axle oscillation lock
- Rear self-steering axle with steering lock
BOGIE suspension is the more robust design for rough terrain – it keeps both axles in contact with the ground, even over severe unevenness. The self-steering axle instead reduces the turning circle and protects the tyres on paved surfaces.
Sprung drawbar with height adjustment
The leaf-sprung drawbar isolates the towing vehicle from the trailer. Height adjustment allows it to be matched to different coupling heights – a practical advantage when using different towing vehicles on site.
Alternatives at no extra cost: drawbar with Ø 50 towing eye, telescopic support leg with gearbox or hydraulically folding support leg.
Approval
| Approval route | Permissible gross weight | Payload |
|---|---|---|
| Individual approval, Germany | 21.000 kg | 14.840 kg |
| On-site use (technical) | 24.000 kg | approx. 17.840 kg |
| EU type approval, 40 km/h | 18.000 kg | approx. 11.840 kg |
The difference is significant: There is a 3.000 kg difference in payload between individual approval and EU type approval. With a K80 ball coupling, the permissible nose weight in the EU version increases to 4.000 kg.
Additional equipment
- EU or AT type approval including documents
- Drawbar with Ø 50 towing eye (no extra charge)
- K80 ball coupling for 4.000 kg
- HARDOX 450 HB tipping body
- Tapered body in S235 or HARDOX with hydraulic tailgate and grain chute
- Additional rear swinging flap (standard body only)
- 800 mm extensions with Plexiglas viewing window for up to 21,3 m³
- Telescopic support leg with gearbox or hydraulically folding support leg (no extra charge)
- BOGIE suspension with hydraulic oscillation lock
- Rear self-steering axle with steering lock
- Dual-line compressed-air brakes with ALB or ALB Premium
- Rear connections
- Metal mudguards
- Side underrun protection to 89/297/EEC
- Trailer couplings from various manufacturers, manual or automatic
- Spare wheel, plastic tube for vehicle documents
- Warning triangle for slow-moving trailers
Applications
Construction and civil engineering companies, earthmoving and excavation, recycling and waste disposal, local authorities and public works departments, quarries and gravel pits, landscaping and grounds maintenance, agricultural contractors.
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 nose weight capacity: up to 3.000 kg, or 4.000 kg with K80 in the EU version.
- When tipping, ensure the ground is level and firm – the centre of gravity is high at a 60° tipping angle.
- Do not raise the body beneath overhead power lines.
- Before tipping, check that the tailgate can open freely.
- The technically permissible 24.000 kg applies only to on-site use.
- Extensions fit only the standard body with an internal width of 2.410 mm.
- The body support is intended exclusively for maintenance work.
- Retighten the wheel nuts after the first few hours of operation and regularly thereafter.
Frequently asked questions
Why is the floor 10 mm thick?
Because construction waste and rubble land hard in concentrated spots and slide across the floor with sharp edges when tipping. Agricultural tippers of the same size typically have a floor thickness of 4 to 6 mm.
What is the benefit of a 60° tipping angle?
Wet clay, excavated material and cohesive soil stick in the body at 50°. Those extra ten degrees determine whether the body empties.
How much can the trailer carry?
14.840 kg with a permissible gross weight of 21.000 kg. A technically permissible weight of 24.000 kg applies for on-site use, and 18.000 kg with EU type approval.
When is HARDOX worthwhile?
For sharp-edged construction waste, recyclable materials and rock. Despite its lower sheet thickness, the wear-resistant steel is considerably more durable than standard structural steel.
What is the tapered body?
A version with an internal width of 2.196 / 2.300 mm, a two-leaf hydraulic tailgate and a grain chute – making the trailer suitable for agricultural tasks too. It even costs less than the standard body.
Can I get more volume?
Yes, with the optional 800-mm extensions, including a Plexiglas viewing window and rear swinging flap – the trailer then holds up to 21,3 m³. They fit only the standard body.
What is the difference between BOGIE suspension and a self-steering axle?
BOGIE suspension is the more robust design for rough terrain and keeps both axles in contact with the ground. The self-steering axle reduces the turning circle and protects the tyres on paved surfaces.
What tractor do I need?
124,8 PS or 91,7 kW and a coupling rated for a 3.000 kg nose weight. Tipping requires 36 litres of oil at 200 bar.