| Manufacturer | Nuffield |
| Price | - |
| Model | 3/45 |
| Equipment Type | - |
| Factory | Bathgate, Scotland |
NUFFIELD 3/45 POWER
| Engine | 45 hp/33.6 kW |
| PTO (claimed) | 39 hp/29.1 kW |
ENGINE DETAIL
The Nuffield 3/45 tractor features a robust 2.8 L BMC diesel engine with a favorable displacement-to-power ratio, producing 45 hp at 2200 RPM, ideal for medium-duty agricultural tasks. Its liquid-cooled system, with a coolant capacity of 10.8 quarts, enhances thermal efficiency, though the 9-quart oil capacity necessitates regular maintenance for optimal performance. Pros include a compact size for maneuverability, whereas challenges may arise from servicing and parts availability due to the tractor's age.
| Description | BMC/diesel/3-cylinder/liquid-cooled |
| Displacement | 173 ci/2.8 L |
| Bore/Stroke | 3.975x4.724 inches/101 x 120 mm |
| Power | 45 hp/33.6 kW |
| Rated RPM | 2200 |
| Firing order | 1-3-2 |
| Starter volts | 12 |
| Oil capacity | 9 qts/8.5 L |
| Coolant capacity | 10.8 qts/10.2 L |
NUFFIELD 3/45 ENGINE
The Nuffield 3/45 tractor is powered by a BMC 2.8L 3-cylinder diesel engine, offering a balance of torque and fuel efficiency, ideal for medium-duty agricultural tasks. With a fuel tank capacity of 19.2 gallons (72.7 liters), it enables extended operational periods without frequent refueling, advantageous for extensive field work. However, potential challenges include parts availability and serviceability, given its vintage, which may affect overall maintenance efficiency in comparison to newer models.
| Description | BMC 2.8L 3-cyl diesel |
| Fuel tank | 19.2 gal/72.7 L |
TRANSMISSION
The Nuffield 3/45 features a versatile 10 forward and 2 reverse gear configuration, enhancing adaptability for various agricultural tasks, particularly in varied terrain. The 280mm dry disc clutch ensures reliable engagement and disengagement, although it may require more maintenance compared to wet clutches in heavy usage environments. Its dual-range system allows operators to select optimal gearing for both power-intensive operations and speed, making it suitable for a range of farming applications.
| Type | gear |
| Gears | 10 forward and 2 reverse |
| Clutch | 280mm dry disc |
| Description | Five gears, plus reverse, in two ranges. |
SPEEDS
| Description | With 11-28 rear tires. |
MECHANICAL
The Nuffield 3/45 tractor features a 4x2 2WD chassis, benefiting from lower maintenance and simpler operation compared to 4WD, but it may struggle with traction in demanding terrains. The spur gear final drives provide durability but may result in higher noise levels and potentially less efficient power transfer. The 10-speed transmission offers versatile gear options, making it suitable for a range of agricultural tasks, though operator familiarity with shifting may be required for optimal performance.
| Chassis | 4x2 2WD |
| Final drives | spur gear |
| Steering | power |
| Brakes | mechanical disc |
| Cab | Open operator station. |
| Transmission | 10-speed gear |
TRACTOR HITCH
| Rear Type | II/I |
| Control | position control and top-link draft sensing |
POWER TAKE-OFF (PTO)
| Rear PTO | transmission/independent |
| Rear RPM | 540 (1.375) |
| Engine RPM | 540@1800 |
NUFFIELD 3/45 TIRES
The Nuffield 3/45 tractor features a robust tire configuration with 6.00-16 front tires and large rear tires (11.00-32 or optional 13.00-28), providing good traction and stability for various agricultural tasks. The tire dimensions can enhance load-carrying capacity and facilitate performance on uneven terrain, making it suitable for both fieldwork and transport. However, the availability of specific tire sizes might pose challenges in sourcing replacements, necessitating careful management of tire maintenance.
| Ag front | 6.00-16 |
| Ag rear | 11.00-32/13.00-28 |
DIMENSIONS
| Wheelbase | 74.8 inches/189 cm |
| Length | 116.9 inches/296 cm |
| Width | 67.7 inches/171 cm |
| Height (hood) | 56.7 inches/144 cm |
| Height (exhaust) | 82.7 inches/210 cm |
| Operating weight | 4460 lbs/2023 kg |
| Ground clearance | 19.1 inches/48 cm |
| Clearance (front axle) | 16.1 inches/40 cm |
| Clearance (drawbar) | 13.4 inches/34 cm |
| Front tread | 52 to 76 inches/132 to 193 cm |
| Rear tread | 52 to 80 inches/132 to 203 cm |
DIMENSIONS & TIRES
The Nuffield 3/45 features a compact wheelbase of 74.8 inches, contributing to enhanced maneuverability on tight farm plots. Weighing 4460 lbs, its robust build aids in stability during heavy-duty tasks, although it may limit transportation options. The tire sizes (5.50-16 front and 11.00-28 rear) offer a balance between traction and flotation, making it suitable for diverse field conditions but potentially challenging in deep mud where narrower fronts may struggle.
| Wheelbase | 74.8 inches/189 cm |
| Weight | 4460 lbs/2023 kg |
| Front tire | 5.50-16 |
| Rear tire | 11.00-28 |
BELT PULLEY
| Diameter | 9 inches/22 cm |
| Width | 6.5 inches/16 cm |
| Speed | 3011 ft/min/917.75 meters/min (low ratio)/3821 ft/min/1164.64 meters/min (high ratio) |