| Manufacturer | Zetor |
| Price | 34,000(USD) |
| Model | 8640 |
| Equipment Type | - |
| Factory | Brno, Czech Republic |
ZETOR 8640 POWER
| Engine | 82hp / 61.1kW |
| PTO (claimed) | 74hp / 55.2kW |
ENGINE DETAIL
The Zetor 8640 features a robust diesel 4-cylinder engine with a displacement of 4.2L, delivering a power output of 82hp (61.1kW), suitable for medium-duty agricultural applications. Its compact engine size provides a balance of efficiency and power, enabling good maneuverability in tight spaces, although the horsepower may limit performance in heavy tillage tasks. The tractor’s relatively lower horsepower can make it advantageous for farmers needing a reliable, cost-effective option for light to moderate workloads.
| Description | Zetor diesel 4-cylinder |
| Displacement | 254ci / 4.2L |
| Power | 82hp / 61.1kW |
ZETOR 8640 ENGINE
The Zetor 8640 is powered by a robust 4.2L four-cylinder diesel engine, offering a balance between efficiency and performance suitable for various agricultural tasks. With a 28-gallon (106L) fuel tank, it provides extended operation time, ideal for long working hours in the field, although refueling may be less frequent compared to larger models. Challenges may include engine maintenance due to the higher complexity of a four-cylinder setup, but the tractor's compact size can enhance maneuverability in tight spaces.
| Description | Zetor 4.2L 4-cyl diesel |
| Fuel tank | 28gal / 106.0L |
TRANSMISSION
The Zetor 8640's powershift transmission with 18 forward and 6 reverse gears offers enhanced versatility and efficiency in varying field conditions, allowing seamless transitions between speeds for optimized productivity. This feature is particularly advantageous when navigating diverse terrains, enabling operators to maintain consistent power delivery and traction. However, potential challenges may arise in mastering gear management, as efficient shifting requires operator familiarity with the system to prevent unnecessary strain on the drivetrain.
| Transmission | powershift |
| Gears | 18 forward and 6 reverse |
MECHANICAL
The Zetor 8640 features a 4x4 MFWD chassis, providing enhanced traction and stability in various terrains, ideal for demanding agricultural operations. Its 18-speed transmission allows for precise speed control and efficient power transfer, making it suitable for both fieldwork and transport tasks. However, the complexity of an 18-speed system may require more maintenance and operator training to fully utilize its capabilities.
| Chassis | 4x4 MFWD 4WD |
| Transmission | 18-speed |
HYDRAULICS
| Type | open |
| Valves | 3 |
| Pump flow | 16gpm / 60.6lpm |
TRACTOR HITCH
| Rear Type | II |
| Rear lift | 9000lbs / 4082kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 540, 1000 |
ZETOR 8640 TIRES
The Zetor 8640 tractor features a robust tire configuration with 12.4-24 front agricultural tires and 16.9-38 rear agricultural tires, offering enhanced traction and stability on varied terrains. This setup is advantageous for heavy-duty applications such as tillage and planting, but may present challenges in tight maneuverability due to its larger rear tire diameter. Overall, it is well-suited for farmers seeking reliable performance in moderate to heavy soil conditions, while being mindful of its turning radius limitations.
| Ag front | 12.4-24 |
| Ag rear | 16.9-38 |
DIMENSIONS
| Wheelbase | 93.5inches / 237cm |
DIMENSIONS & TIRES
The Zetor 8640 tractor features a 93.5-inch wheelbase, providing stability and better weight distribution, particularly in rough terrains. The front tires (12.4-24) and rear tires (16.9-38) sizes allow for versatile performance, enhancing traction and minimizing soil compaction during agricultural operations. A potential challenge is the balancing of load efficiency; while the large rear tires improve power transfer, they may require careful weight management to prevent front lifting during heavy implements use.
| Wheelbase | 93.5inches / 237cm |
| Front tire | 12.4-24 |
| Rear tire | 16.9-38 |