PRONAR Tridem-Tieflader 27 t, 21,1 t Nutzlast, 21,3 m², 60 km/h

Standard equipment

• Main loading platform with wooden floor
• Mechanical steel loading ramps with non-slip surface
• Rear self-steering axle with hydraulic steering lock
• K80 towing eye
• Two-line compressed-air braking system with ALB, 300 × 135 mm drum brakes
• Crank-operated brake
• Mechanical support leg, foldable
• Support legs for the rear section of the low-loader
• Lashing rings for securing the load
• 12 V LED lighting system with electrical connection at the rear and side LED marker lights, rear lights with protective grille
• Side underrun protection
• Approved rear underrun protection
• Toolbox, approx. 50 l
• 2 wheel chocks with holders
• Warning triangle
• Paint finish: black grey RAL 7021

Technical data

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

Product description

Tridem low-loader for tractor operation

The three-axle trailer carries up to 21.160 kg on a 21,3 m² loading area. Loading ramps, 19 lashing rings and a self-steering axle with hydraulic lock are standard, as is the K80 towing eye.

21 tonnes with 104 PS – that’s what makes it special

The ratio is remarkable: The trailer carries more than three and a half times its own weight and needs only 104 PS to do so.

How is this possible? The trailer is pulled, not carried – power is used for propulsion, not lifting. Three axles distribute the load, and at 40 to 60 km/h on paved roads, rolling resistance remains low.

What this means in practice: A 21-tonne low-loader can be towed by a tractor in the 110-PS class. A lorry combination with the same capacity costs many times more – to buy, tax and insure for the driver.

Loading ramps included as standard

The steel ramps with non-slip surfaces are 1.900 mm long and are included as standard.

With a platform height of 980 mm this gives a loading angle suitable for most construction machinery. The manufacturer offers options for low-clearance machines and tracked vehicles:

• Hydraulic loading ramps – operated from the cab instead of being moved by hand.
• Hydraulic ramps with float position – they adapt to the ground as the machine drives on, rather than remaining rigid. This avoids a step between the ramp and the ground.
• Internal ramp extensions to an internal width of 810 mm – for wide track units.

19 lashing rings – 23 with ramps

With a payload of 21 tonnes, load securing is no mere formality. A machine must be secured forwards, backwards and sideways – and when carrying several separate items, each needs its own lashing points.

19 points as standard allow continuous diagonal lashing along the entire length. Four more are added when the ramps are fitted.

Self-steering axle with hydraulic lock

The rear axle follows the turn.

This matters twice over with an overall length of 10,4 m and three axles: Fixed axles scrub sideways when cornering, wearing down the tyres and putting strain on the frame. The self-steering axle also noticeably reduces the turning circle.

The lock is essential when reversing: An unlocked self-steering axle can cause the trailer to jack-knife when manoeuvring.

40 or 60 km/h

The trailer is designed for both speeds. This makes a difference on longer journeys between construction sites – 60 km/h cuts journey time by a third.

Regarding approval: With EU type approval at 40 km/h, the permissible gross weight falls to 24.000 kg. This approval is only available with mechanical suspension.

Platform width extension to 3.000 mm

With the optional extensions, the platform width increases from 2.540 to 3.000 mm – adding up to 3,7 m² of extra area.

Please note: Above an overall width of 2.550 mm, regulations for abnormal loads apply. The manufacturer offers a marking kit with warning board and lighting for this purpose. A front steel basket is used to store the boards.

45 mm wooden floor

The floor is made of 45 mm-thick softwood. Oak floorboards are available as an option.

Why oak is worth considering: Oak is considerably harder and more resistant to tracked vehicles and fork tines. If you load and unload tracked excavators every day, it significantly extends the floor’s service life.

Well equipped as standard

What is remarkable about this model is its standard specification: ALB, side and rear underrun protection, LED lighting, toolbox, wheel chocks and warning triangle are all included. Many competitors charge for these items separately.

Additional equipment

• EU or AT type approval incl. documents
• Drawbar with Ø 40 towing eye (no extra charge)
• Two-line compressed-air braking system with ALB Premium
• Hydraulic support leg
• Oak floorboards
• Platform width extensions incl. wooden boards
• Hydraulic loading ramps, optionally with float position
• Internal loading ramp extensions to 810 mm
• Front steel basket
• Hydraulic winch
• Boundary stakes to stabilise long loads, 4 pieces
• Yellow warning beacon
• Marking kit for abnormal loads
• 30 l water tank with lotion dispenser
• Wedge plate for the lowered section of the platform
• Odometer

Applications

Transport of construction machinery, construction and civil engineering companies, equipment hire, landscaping, local authorities and public works depots, agricultural machinery sales and service, agricultural contractors, forestry businesses.

Operating notes

• Confirm the approval route before ordering – EU type approval reduces the permissible gross weight to 24.000 kg.
• Check the towing vehicle’s drawbar load: up to 3.000 kg.
• Position the ramps securely before loading and check that they are stable.
• Keep everyone clear of the space between the ramp and machine while loading.
• Use the rear support legs when loading and unloading.
• Lock the self-steering axle when reversing.
• Secure the load in accordance with load-securing regulations.
• For platform width extensions beyond 2.550 mm, abnormal-load regulations apply.
• Check the wooden floor regularly for damage.
• With an overall length of 10,4 m, check access routes and turning space in advance.
• Retighten the wheel nuts after the first few hours of operation and regularly thereafter.

Frequently asked questions

How much can the low-loader carry?

Up to 21.160 kg with a permissible gross weight of 27.000 kg, depending on equipment. With EU type approval, the permissible gross weight is 24.000 kg.

What tractor do I need?

104 PS or 76,4 kW and a coupling rated for a 3.000 kg drawbar load. The K80 towing eye is standard; a drawbar with a Ø 40 towing eye is available at no extra charge.

Are loading ramps included?

Yes, mechanical steel ramps with a non-slip surface and a length of 1.900 mm. Hydraulic ramps and ramps with a float position are available as additional equipment.

What does the ramps’ float position do?

The ramps adapt to the ground as the machine drives on, rather than remaining rigid – this avoids a step between the ramp and the ground.

How large is the loading area?

17,3 m² in the flat section and 21,3 m² in total. The optional extensions add up to 3,7 m², increasing the width to 3.000 mm.

How many lashing points does the trailer have?

19, or 23 with the loading ramps fitted. This allows continuous diagonal lashing along the entire length.

Can I load machines that are not roadworthy?

Yes, with the optional hydraulic winch.

Can the trailer travel at 60 km/h?

Yes, it is designed for 40 and 60 km/h. However, EU type approval is for 40 km/h and reduces the permissible gross weight.