Hanomag Robust 900 A (S)
Built: 1967–1969 · Series: Robust
More machines from model year 1967
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Hanomag Robust – heavy standard tractors from Hanover: Robust 800 to 1200, four- and six-cylinder diesels rated 55–81 kW, 3,200–4,870 kg, some with four-wheel drive (A)
The Robust line was Hanomag's heavy standard-tractor programme, built by the Hannoversche Maschinenbau AG through the 1950s and 1960s. Alongside tractors, Hanomag also built trucks and construction machinery in Hanover; in 1971 the group sold its farm-machinery division to Massey Ferguson, which continued production at the site for a few more years. The Robust models from 800 to 1200 are named by ascending frame size, and the A suffix denotes a four-wheel-drive version.
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The register lists 6 versions rated at 55 to 81 kW (75 to 110 hp) from four- and six-cylinder diesel engines of 4,712 to 10,179 cm³, torque of 265 to 580 Nm at 1,500 to 2,600 rpm, kerb weights of 3,200 to 4,870 kg, and a length of 3,800 to 4,200 mm, a width of 1,950 to 2,100 mm and a height of 1,910 to 2,550 mm.
In the 1950s and 1960s, the Robust tractors ranked among the heavy standard tractors for large German farms and competed with Lanz, Fendt and the big international makes; after Hanomag's independent farm-machinery business ended, its engineering partly lived on in Massey Ferguson models.
On these historic tractors, check engine and injection condition, the clutch and mechanical gearbox, the hydraulics with lift, and corrosion on the wings, bonnet and frame; on the A models, also the transfer case and driveshafts of the four-wheel drive. Spares are now only available through specialist Hanomag parts dealers and vintage farm-machinery markets.
Sources: SpecCodex register, model data: Hanomag Robust
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 85 hp (62 kW)correct |
| Rated speed | 2,600 rpmcorrect |
| Torque | 265 Nmcorrect |
| Cylinders | 6correct |
| Displacement | 4,712 cm³correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 3,990 mmcorrect |
|---|---|
| Width | 2,015 mmcorrect |
| Height | 1,910 mmcorrect |
| Wheelbase | 2,475 mmcorrect |
| Ground clearance | 320 mmcorrect |
| Unladen weight | 3,200 kgcorrect |
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Gearbox | 12V / 3Rcorrect |
| Front tyres | 9-24, 10-24, 10.5-20, 12.5-20correct |
| Rear tyres | 12-36, 14-30, 14-34, 15-30, 15-34, 15.5-38correct |
| Top speed | 19.87 km/hcorrect |
Working data
| Fuel tank capacity | 125 lcorrect |
|---|
Origin and approval
| Construction | frameless unit constructioncorrect |
|---|
Where this model stands
Power-to-weight ratio: 19.4 kW/t (62 kW / 3.2 t)
Power class: Universal (40–100 hp)
Stronger than 58% of the tractors in the register — out of 15,663 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Hanomag Robust 900 A (S) have?
The Hanomag Robust 900 A (S) delivers 85 hp.
How much does the Hanomag Robust 900 A (S) weigh?
The unladen weight is 3,200 kg.
What engine does the Hanomag Robust 900 A (S) have?
6 cylinders, 4,712 cm³ displacement, Diesel.
How fast does the Hanomag Robust 900 A (S) go?
Top speed is 19.9 km/h.
What are the dimensions of the Hanomag Robust 900 A (S)?
3,990 mm × 2,015 mm × 1,910 mm.
When was the Hanomag Robust 900 A (S) built?
Production years: 1967–1969.
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.
- Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- 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 22 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.
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Other models in this series
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Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.