Technical specifications of Belarus Progress 425/405 agricultural tractor:
Belarus Progress 405/425 agricultural tractor was produced from 1983 to 1990. It was equipped with a D144 engine with a displacement of 4150 cm³. This engine has four cylinders and achieves a maximum power of 55 HP at 1800 RPM and a torque of 235 Nm at 1050 RPM. The cylinder bore is 105 mm, and the stroke is 120 mm. The gearbox offers 11 forward and 8 reverse gears, allowing a driving speed from 2.2 to 30 km/h. The hydraulic pump capacity is 43 liters per minute, and the mechanically controlled rear lift has a maximum capacity of 1600 kg. The power take-off (PTO) operates at 540 RPM. The disc brakes are dry, and the braking system is hydraulically controlled. The turning radius for the 2WD version is 8.4 meters, and for the 4WD version, it is 9.6 meters. The front tire size is 6.50-16 for the 2WD version and 8.30-20 for the 4WD version, while the rear tires are 13.6-38 for both versions. The total weight of the tractor is 3200 kg for the 2WD version and 3260 kg for the 4WD version, and its dimensions are: height with cab 265 cm, length 366 cm, and width 80 cm. The fuel tank capacity is 85 liters.
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Technical data sheet for Belarus Progress 425, 405, Agross 406, 426 agricultural tractors:
| Model | Belarus Progress 405/425 | Belarus Agross 406/426 |
| Years of production | 83-90 | 90-97 |
| Engine model / type | D144 | D144 |
| Number of cylinders / turbocharging | 4 | 4 |
| Engine displacement (cm3) | 4150 | 4150 |
| Piston dimension / stroke (mm) | 105×120 | 105×120 |
| Maximum engine power (hp) / rpm | 55/1800 | 58/2100 |
| Torque (Nm) / rpm | 235/1050 | 235/1050 |
| Number of gears (front + rear) | 11+8 | 11+8 |
| Number of synchronized gears (front+rear) | – | – |
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| Speed-Shift | – | – |
| Type of reverse | – | – |
| Driving speed (km/h) | 2,2-30 | 2,7-32,1 |
| Max Driving speed (km/h) | – | – |
| Hydraulic pump capacity (L/min) | 43 | 43 |
| 3-Point Hitch control | mech | mech |
| 3-point hitch max load (kg) | 1600 | 1600 |
| PTO speed (rpm) | 540 | 540 |
| Disc brake type (dry / wet) | suchy | suchy |
| Type of control of the braking system | hydr | hydr |
| Turning radius 2WD (m) | 8,4 | 8,4 |
| Turning radius 4WD (m) | 9,6 | 9,6 |
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| Front wheel 2WD | 6,50-16 | 6,50-16 |
| Front wheel 4WD | 8,30-20 | 8,30-20 |
| Rear wheel 2WD | 13,6-38 | 13,6-38 |
| Rear wheel 4WD | 13,6-38 | 13,6-38 |
| 2WD total weight (kg) | 3200 | 3200 |
| 4WD total weight (kg) | 3260 | 3260 |
| Total height with cabin (cm) | 265 | 268 |
| Total length (cm) | 366 | 373 |
| Total width (cm) | 80 | 80 |
| Fuel tank capacity (l) | 85 | 85 |
| Cabin sound level (dB) | – | – |
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