Technical register for agricultural, construction and commercial machinery · sourced data
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Napk APP-113-42T-91

Built: 1991 · Series: Other models

More machines from model year 1991

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The APP-113-42T-91 comes from Napk. Production: 1991. The vehicle is 12,250 mm long and 2,590 mm wide. The unladen weight is 4,950 kg. The gross vehicle weight is 29,400 kg. Unladen weight within this group ranges from 85 to 84,800 kg; the APP-113-42T-91 sits at the bottom of that range with 4,950 kg. Its immediate neighbours are the K.A.D.-16 below it with 4,940 kg and the O-3-TI above it with 4,959 kg. Gross vehicle weight within this group ranges from 470 to 722,500 kg; here the APP-113-42T-91 sits at the bottom of that range with 29,400 kg.

APP-113-42T-91 by Napk: EU class O4 trailer with a gross vehicle weight of 29,400 kg, a length of 12,250 mm and an unladen weight of 4,950 kg

With a gross vehicle weight of 29,400 kg, the APP-113-42T-91 sits in EU trailer class O4, the heavy trailers above 10 tonnes used in commercial freight transport. At 29.4 tonnes, it sits in the middle of that class, well above the 10-tonne threshold where O4 begins.

Read on 3 more paragraphs

The trailer is 12,250 mm long and 2,590 mm wide, with an unladen weight of 4,950 kg and a payload of 24,450 kg, almost five times its own weight. Such a light build at this length points to a body optimised for low unladen weight rather than for massive frame members, the kind built for bulky rather than dense cargo.

O4 trailers are fitted with air brakes and a two-line connection, and the towing vehicle needs a matching brake system. The rig is driven on licence category CE, since the gross combination weight is well beyond the limits of the lighter categories. The towing vehicle's coupling and air supply must also suit this weight class, along with its brake force setting.

With such a high payload share, it is worth checking the frame closely for signs of past overloading: bent chassis rails, worn-out axle mounts, and cracked welds at the cross members are the telltale signs of a trailer regularly pushed to its limit. Also check: condition of the brake linings, air suspension, tyre condition, the coupling, and confirm a valid roadworthiness inspection is on file.

Sources: SpecCodex-Register: Kennwerte des Modells APP-113-42T-91

Technical data

Dimensions and weights

Length12,250 mmcorrect
Width2,590 mmcorrect
Unladen weight4,950 kgcorrect
Gross vehicle weight29,400 kgcorrect

Frequently asked questions

How much does the Napk APP-113-42T-91 weigh?

The unladen weight is 4,950 kg.

What is the gross vehicle weight of the Napk APP-113-42T-91?

29,400 kg.

What are the dimensions of the Napk APP-113-42T-91?

12,250 mm × 2,590 mm.

When was the Napk APP-113-42T-91 built?

Production years: 1991.

What to check before buying

  • Search the frame and welds at the axle mounts — that is where cracks start.
  • Check the brakes and the last inspection in the papers.
  • Work the gross weight against the towing vehicle before buying.
  • Compare the chassis number with the papers.
  • Look at the floor, cover or body from the inside — rust does not show from outside.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 5 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.

The technical data on this page comes from official vehicle registration records (RDW/Traficom), not from the manufacturer.

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Sources: Traficom — Finnish vehicle register (retrieved August 2026) · How we check the data

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