Bomag BW 203 AD 4
Series: BW
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
The Bomag BW 203 AD 4 is a tandem vibratory roller of the BW series from Bomag, a German maker of compaction machines. Tandem rollers have two equal steel drums one behind the other and compact asphalt and base layers in road building.
According to a dealer, the roller weighs 13 t in operation and has a drum width of 2.135 m; drum diameter is 1.236 m, engine power 100 hp, travel speed up to 11 km/h and vibration frequency 50 Hz. The machine is intended for large areas such as motorways and runways, where high area output counts.
In compaction, the interplay of operating weight, frequency and amplitude determines the depth effect: high weight and lower frequency compact deeper, high frequency gives a finer surface. The model was built in several versions, including the BW 203 AD-4 AM version that databases list separately. On tandem rollers of this size edge compaction at carriageway edges and the overlap of passes also count, because they decide how evenly the compaction is achieved over the full width.
Bomag BW – Compaction Rollers from Boppard Since 1957
Karl Heinz Schwamborn founded the Bopparder Maschinenbau Gesellschaft in Boppard in 1957, out of which Bomag emerged. Already in its first year, the hand-guided BW 60 became the world's first double vibratory roller driving both drums. In 1962 came the BW 200, the world's first 7-tonne double vibratory roller, which was exported as far as China and remained a long-running sales success for more than 30 years, until 1993. Within just 13 years, Bomag rose to become the world market leader in vibratory rollers. In 1969 the company moved from its original site to the Hellerwald industrial estate in Boppard's Buchholz district, where it remains based today; in 1970 Schwamborn sold the company to the American firm Koehring, and since 2005 Bomag has been part of the French Fayat Group. Listed in the register: the BW 203 AD 4.
Sources: BOMAG – Firmengeschichte, Compact Equipment – 60 Years of BOMAG
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.
- 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.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
This page carries 6 individual figures for this model. They come from 3 recorded sources; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
Sources: Manufacturer documentation, bomag.com (retrieved August 2026) · products.unitedtractors.com (retrieved October 2026) · How we check the data
Asphalt paver in 3D section
Turn the model, look inside and click an assembly — each one is explained.
