Bischoff AS 15
Built: 1/1951–3/1952 · Series: Biwe
More machines from model year 1951
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
Bischoff Werke Biwe AS 15: small West German single-cylinder diesel tractor from 1951 with 1,180cc displacement, 15 hp and a top speed of 16.5 km/h
The Biwe range from Bischoff Werke belongs to the many small German tractor builders of the early postwar years, who alongside the big manufacturers built simple standard tractors for smaller and medium farms. The AS 15 was built between January 1951 and March 1952 as a single-cylinder diesel tractor in the lower power class of the period.
Read on 3 more paragraphs
The AS 15 carries a water-cooled single-cylinder diesel engine with 1,180 cm³ of displacement, producing 15 hp, or 11 kW, at 1,500 rpm, and 66 Nm of torque. At 1,420 kg, 2,500 mm long, with a 1,510 mm wheelbase and 1,560 mm width and 1,550 mm height, the machine reaches a top speed of 16.5 km/h.
A water-cooled single-cylinder engine of this size was typical for small postwar standard tractors: simple in construction, with few wearing parts, and sized enough for work on small to medium fields with light implements. A machine of this power class was not built for heavy draft work or for travelling at speed on the road.
When buying such an early single-cylinder tractor used, the condition of the cooling system matters most, as the water pump and radiator often show leaks on machines of this age. Equally important are the condition of the injection pump, the tightness of the crankcase breather, and corrosion damage to the frame and mudguards, which should be carefully exposed and checked on such an old single-cylinder tractor.
Sources: SpecCodex-Register: Kennwerte des Modells Bischoff Werke Biwe AS 15
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 15 hp (11 kW)correct |
| Rated speed | 1,500 rpmcorrect |
| Torque | 66 Nmcorrect |
| Cylinders | 1correct |
| Displacement | 1,180 cm³correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 2,500 mmcorrect |
|---|---|
| Width | 1,560 mmcorrect |
| Height | 1,550 mmcorrect |
| Wheelbase | 1,510 mmcorrect |
| Ground clearance | 270 mmcorrect |
| Unladen weight | 1,420 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | 4V+1Rcorrect |
| Forward gears | 4correct |
| Front tyres | 5.00—16correct |
| Rear tyres | 8.00-20 AScorrect |
| Top speed | 16.5 km/hcorrect |
Origin and approval
| Construction | unit construction (no separate frame)correct |
|---|
Where this model stands
Power-to-weight ratio: 7.7 kW/t (11 kW / 1.4 t)
Power class: Compact (< 40 hp)
Stronger than 3% 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 Bischoff AS 15 have?
The Bischoff AS 15 delivers 15 hp.
How much does the Bischoff AS 15 weigh?
The unladen weight is 1,420 kg.
What engine does the Bischoff AS 15 have?
1 cylinders, 1,180 cm³ displacement, Diesel.
How fast does the Bischoff AS 15 go?
Top speed is 16.5 km/h.
What are the dimensions of the Bischoff AS 15?
2,500 mm × 1,560 mm × 1,550 mm.
When was the Bischoff AS 15 built?
Production years: 1/1951–3/1952.
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.
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 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.
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: [1]
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
