Zil КБ-503 – specifications
Series: Other models
Build year not documented · Data origin: Reference work (Wikipedia/Wikibooks) · sources
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Zil KB-503: heavy crane built on a chassis from the Russian truck and bus manufacturer Zil, with a YaMZ-236 diesel engine, 161 kW of power and a 152,000 kg gross weight
Zil, short for Zavod imeni Likhachyova, is a Russian manufacturer of trucks, buses and special vehicles dating back to the Soviet era, based in Moscow. The KB-503 uses a chassis from that range as the base for a crane superstructure, placing it among the heavy crane vehicles in the register.
Read on 3 more paragraphs
The KB-503 is powered by a diesel engine of the YaMZ-236 type, a unit built in Yaroslavl and widely used across the Russian commercial vehicle industry, rated here at 161 kW. The machine's gross weight is 152,000 kg. Overall length is 5,920 mm, width 2,500 mm, height 2,700 mm, and wheelbase 3,200 mm.
A gross weight of 152 tonnes places the KB-503 in the heavy class of crane technology, the kind needed for lifting work on large structures, in industrial plant construction or in heavy industry. The YaMZ-236 diesel engine as the power source points to its origin in the Soviet-Russian commercial vehicle industry, from which special vehicles such as crane carriers were also developed.
When buying a used crane of this weight, the condition of the load-bearing frame matters for cracking, since the high gross weight means sustained loading on the frame and axles. The YaMZ-236 engine should be checked for oil loss at the cylinder head gaskets and smoke behaviour under load, and the crane superstructure's supporting structure for wear at the bearing points where the load is transferred into the frame.
Sources: SpecCodex-Register: Kennwerte des Modells Zil KB-503
Technical data
Engine
| Engine | ЯМЗ-236correct |
|---|---|
| Power | 161 kWcorrect |
Dimensions and weights
| Length | 5,920 mmcorrect |
|---|---|
| Width | 2,500 mmcorrect |
| Height | 2,700 mmcorrect |
| Wheelbase | 3,200 mmcorrect |
| Unladen weight | 152,000 kgcorrect |
Where this model stands
Power-to-weight ratio: 1.1 kW/t (161 kW / 152 t)
Stronger than 70% of the cranes & access platforms in the register — out of 11 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Zil КБ-503 have?
The Zil КБ-503 delivers 161 kW.
How much does the Zil КБ-503 weigh?
The unladen weight is 152,000 kg.
What are the dimensions of the Zil КБ-503?
5,920 mm × 2,500 mm × 2,700 mm.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 7 individual figures for this model. They come from 2 recorded sources; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Sources: Wikipedia (CC BY-SA 4.0) (retrieved August 2026) · Values adopted and presented in our own form; changes from the source are possible. · Data sources and cross-checks
Mobile crane in 3D section
Turn the model, look inside and click an assembly — each one is explained.
