David Brown 25, 30D ⚙️ Specs

Technical Specifications of the David Brown 25 agricultural tractor:

David Brown 25 agricultural tractor was produced from 1953 to 1956. It is equipped with an AD4/25 engine, consisting of four cylinders, without a turbo and intercooler, with a displacement of 2523 cm³. The piston dimensions are 88.9 mm, and the piston stroke is 101.6 mm. The engine reaches a maximum power of 32 HP at 1800 RPM. The tractor has 6 forward gears and 2 reverse gears, allowing a speed range from 2.8 km/h to 25.1 km/h. The hydraulic pump has a capacity of 70 liters per minute. The rear hitch is mechanically controlled and has a maximum lifting capacity of 590 kg. The power take-off (PTO) operates at speeds of 540 and 885 RPM. David Brown 25 is equipped with a mechanically controlled braking system. The turning radius is 6.8 meters for the 2WD version. The front tires are sized 4.50-19, while the rear tires are 11.2/10-28. The total weight is 1600 kg for the 2WD version. The tractor height with cab is 137 cm, the length is 287 cm, and the width is 190 cm. The fuel tank capacity is 52 liters.

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Technical Data Sheet for David Brown 25, 30D agricultural tractors:

Model David Brown 25 David Brown 30D
Years of production 53-56 53-56
Engine designation/type AD4/25 CAD4/3
Number of cylinders / Turbo / Intercooler 4 4
Engine displacement (cm³) 2523 2706
Piston diameter / Stroke (mm) 88,9×101,6 92,1×101,6
Maximum engine power (HP) / at RPM 32/1800 38/2000
Torque (Nm) / at RPM
Number of gearbox speeds (forward + reverse) 6+2 6+2
Number of synchronized gears (forward + reverse)

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Fast gearbox / Power shift
Reverser type
Speed range (km/h) 2,8-25,1 2,8-24,9
Maximum speed (km/h)
Hydraulic pump capacity (L/min) 70
Rear three-point hitch (TUV) control type mech mech
Maximum rear three-point hitch (TUV) lift capacity (kg) 590 590
Power take-off (PTO) speed (RPM) 540/885 540/885
Type of disc brake (dry/wet)
Brake system control type mech mech
Turning radius 2WD (m) 6,8
Turning radius 4WD (m)

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Front tire size 2WD 4,50-19 6,00-19
Front tire size 4WD
Rear tire size 2WD 11,2/10-28 12,4/11-28
Rear tire size 4WD
Total weight 2WD (kg) 1600 1750
Total weight 4WD (kg)
Total height with cabin (cm) 137 142
Total length (cm) 287 296
Total width (cm) 190 190
Fuel tank capacity (L) 52 52
Cabin noise level (dB)

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