| Manufacturer | UTB/Universal |
| Price | 20,000(USD) |
| Model | 640 |
| Equipment Type | - |
| Factory | Brasov, Romania |
VARIANTS
| U-640 | 2WD |
| U-640DTC | 4WD |
| U-640SD | 2WD shuttle |
| U-640DTC-SD | 4WD shuttle |
| U-640DTCE | 4WD equal-size wheels |
| U-640L | crawler |
UTB/UNIVERSAL 640 POWER
| Engine | 65hp / 48.5kW |
| PTO (claimed) | 62hp / 46.2kW |
ENGINE DETAIL
The UTB/Universal 640 tractor features a robust 4-cylinder diesel engine with a displacement of 3.6L, producing 65hp at 2400 RPM, which is suitable for demanding agricultural tasks. Its direct injection fuel system and a high compression ratio of 17:1 enhance fuel efficiency and torque delivery, with peak torque of 163 lb-ft available at a low 1400 RPM, making it ideal for heavy-load scenarios. A challenge may arise in maintenance due to the complexity of the liquid-cooled system, but the 12-volt starter ensures reliable ignition in various conditions.
| Description | UTB diesel 4-cylinder liquid-cooled |
| Displacement | 219.4ci / 3.6L |
| Bore/Stroke | 4.016x4.331inches / 102x 110 mm |
| Power | 65hp / 48.5kW |
| Fuel system | direct injection |
| Compression | 17:1 |
| Rated RPM | 2400 |
| Torque | 163 lb-ft /221.0 Nm |
| Torque RPM | 1400 |
| Starter volts | 12 |
| Starter power | 4 hp /3.0 kW |
UTB/UNIVERSAL 640 ENGINE
The UTB/Universal 640 tractor is powered by a 3.6L 4-cylinder diesel engine, offering a balance of power and fuel efficiency suitable for medium-duty agricultural tasks. With a fuel tank capacity of 14.2 gallons (53.7 liters), operators can expect a reasonable operational range, though regular refueling may be necessary for extended use. Key considerations include the engine's torque delivery for traction in challenging terrains and the tractor's overall weight distribution, which may impact performance in varying soil conditions.
| Description | UTB 3.6L 4-cyl diesel |
| Fuel tank | 14.2gal / 53.7L |
TRANSMISSIONS OVERVIEW
The UTB/Universal 640 tractor features a 12-speed constant mesh transmission, which allows for smoother gear shifting and enhanced torque management, particularly beneficial in diverse agricultural applications. Its 8-speed shuttle system provides quick direction changes, improving operational efficiency during tasks such as plowing or hauling. However, the complexity of maintaining a constant mesh setup may pose challenges in terms of repair and alignment, necessitating regular servicing to ensure optimal performance.
| Description | 12-speed constant mesh 8-speed shuttle |
TRANSMISSION 1
The UTB/Universal 640 tractor features a constant mesh transmission with a total of 12 forward and 3 reverse gears, facilitating flexibility in various operational conditions. The synchronized 3rd and 4th gears enhance ease of shifting, making it advantageous for tasks requiring frequent speed adjustments. However, the dry disc clutch may pose a challenge in extremely muddy or wet conditions, as it can lead to slippage; therefore, proper maintenance is crucial for optimal performance.
| Type | constant mesh |
| Gears | 12 forward and 3 reverse |
| Clutch | dry disc |
| Description | Four gears (1-4) plus reverse (R) in three ranges (creeper, low, and high). Gears 3 and 4 are synchronized. |
SPEEDS 1
| Description | With 14.9x28 rear tires |
TRANSMISSION 2
The UTB/Universal 640 tractor features a shuttle transmission, allowing for seamless direction changes without needing to shift gears, which is ideal for tasks requiring frequent stops and starts. The 8 forward and reverse gears provide versatile speed options for various applications, enhancing operational efficiency. However, the dry disc clutch may require more maintenance and has a limited lifespan compared to hydraulic options, which could affect long-term performance in high-demand scenarios.
| Type | shuttle |
| Gears | 8 forward and reverse |
| Clutch | dry disc |
SPEEDS 2
| Description | With 14.9x28 rear tires. Reverse speeds are 15% faster than forward./ |
MECHANICAL
The UTB/Universal 640 tractor features a versatile 4x2 or 4x4 MFWD configuration, allowing it to adapt to various terrains and enhance traction when necessary. Its hydrostatic power steering provides effortless maneuverability, while the mechanical differential lock aids in maintaining stability on uneven ground. The 12-speed constant mesh transmission enables precise control over speed and torque, advantageous for diverse agricultural tasks, although potential operators may find the absence of an automatic option as a challenge in certain scenarios.
| Chassis | 4x2 2WD/4x4 MFWD 4WD |
| Differential lock | mechanical rear |
| Steering | hydrostatic power |
| Brakes | dry band |
| Cab | ROPS. Cab optional. |
| Transmissions | 12-speed constant mesh/8-speed shuttle |
HYDRAULICS
| Type | open center |
| Valves | 1 |
| Pump flow | 10.8gpm / 40.9lpm |
TRACTOR HITCH
| Rear Type | II/I |
| Control | position and draft control |
| Rear lift | 4630lbs / 2100kg |
POWER TAKE-OFF (PTO)
| Rear PTO | live |
| Rear RPM | 540 |
UTB/UNIVERSAL 640 TIRES
The UTB/Universal 640 tractor offers a versatile range of tire options tailored for various agricultural applications, providing essential adaptability for traction and stability. Standard configurations with sizes like 14.9x28 rear tires optimize ground contact for soil cultivation, while optional tires, such as 12.4x36, can enhance performance in specific fields or terrains. However, the choice of 2WD vs. 4WD can impact maneuverability and power delivery; 4WD may offer better traction in challenging conditions but at the cost of increased complexity and maintenance requirements.
| Standard tires (ag) | Front: 6.00x16. Rear: 14.9x28 (2WD)/Front: 11Lx15. Rear: 16.9x30 (640SD)/Front: 7.50x20. Rear: 14.9x28 (4WD)/Front: 9.50x24. Rear: 16.9x30 (4WD SD)/Front: 14.9x28. Rear: 14.9x28 (DTCE)/Front: 6.00x16. Rear: 9.50x36 (640L) |
| Optional tires (ag) | Front: 12.4x36. Rear: 12.4x36 (DTCE)/Front: 7.50x16. Rear: 11.2x38 (640L) |
DIMENSIONS
| 2WD Wheelbase | 82.6inches / 209cm |
| 4WD Wheelbase | 78.3inches / 198cm |
| 2WD Weight | 4400lbs / 1995kg |
| 4WD Weight | 5100lbs / 2313kg |
DIMENSIONS & TIRES
The UTB/Universal 640 tractor offers a sturdy 2WD configuration with an 82.6-inch wheelbase, optimizing stability for medium-duty tasks, while the shorter 4WD wheelbase at 78.3 inches enhances maneuverability in tighter spaces. Weighing between 4400 to 5100 pounds, its design provides sufficient traction, though the limited tire sizes (6.00x16 front and 14.9x28 rear in 2WD) may restrict performance on soft or uneven terrains. It is best suited for agricultural applications in flatter terrains, but potential users should consider its limitations in heavy-duty operations or rugged landscapes.
| 2WD Wheelbase | 82.6inches / 209cm |
| 4WD Wheelbase | 78.3inches / 198cm |
| Weight | 4400 to 5100 pounds |
| Front tire | 6.00x16 |
| Rear tire | 14.9x28 (2WD) |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Battery volts | 12 |