Overview
The Lanz Bulldog D7521 is a 2WD farm tractor manufactured in Mannheim, Germany, between 1935 and 1952. It features a 4.7L single-cylinder liquid-cooled diesel engine producing 24.5 hp at a rated 850 RPM.
Ideal Applications
Road Operations:
As the specific traffic model variant within the D7500 series, this tractor is purpose-built for road-based tasks and transport.
General Farming:
The 24.5 hp diesel engine and 2WD drive system provide the necessary power and traction for standard agricultural farm applications.
Hauling and Transport:
Equipped with a 6-speed gear transmission, the D7521 offers multiple forward gear options to manage varying loads and travel speeds.
Production
| Description | Built in Mannheim, Baden-Württemberg, Germany |
|---|---|
| Manufacturer | Lanz |
Engine
| Engine type | Lanz 4.7L 1-cyl diesel |
|---|---|
| Bore/Stroke | 6.693x8.268 inches (170 x 210 mm) |
| Description | Lanz / diesel / 1-cylinder / liquid-cooled |
| Displacement | 286.8 ci (4.7 L) |
| Power | 24.5 hp (18.3 kW) |
| Rated RPM | 850 |
Transmission
| Gears | 6 forward |
|---|---|
| Transmission | gear |
| Transmission type | 6-speed |
Mechanical
| Drive | 2WD |
|---|
Variants
| 7521 | traffic model for road operations |
|---|---|
| 7531 | express model with high-speed gearing |
| D7500 | 3-speed |
| D7506 | 6-speed |
| D7507 | 6-speed, with starter |
| D7511 | combination for both field and road operations, front-axle springs |