ZOOMLION Tractor RK504/704

1. Engine & Transmission

Brand-name engine meeting National Emission Standard II (China) — indicating improved emissions and compliance.

For RK704: Rated power ~ 51.5 kW (~70 hp) in the model-designation “RK704-A”.

Transmission: 12 forward + 12 reverse (12F + 12R) shuttle shift gearbox. This means smoother directional shifts (forward↔reverse) and a good range of speeds.

Clutch: Double-acting independent clutch (for improved torque reserve and reliability).

2. Hydraulics, PTO & Implements

The machines support a dual-speed power take-off (PTO): standard 540/760 rpm, optional 540/1000 rpm. This gives flexibility for different implements.

Hydraulic lifter: “Partial separated lifter with auxiliary oil cylinder” is mentioned for the RK504/704 series. This gives strong lifting force, and allows both force-control and position-control modes.

Rear track width is adjustable (important for matching crop rows, ridged fields, etc).

3. Chassis, Adaptability & Field Use

Enhanced / reinforced chassis design for durability; e.g., in RK504/704 description they mention “enhanced chassis and waterproof wiring harness — more suitable for paddy operation.”

Adjustable ground clearance and track width: for RK504 series ground clearance becomes ~320 mm; for RK704 it’s ~355 mm.

Designed with “no three leaks” sealing (oil/hydraulic/gearbox) to reduce maintenance and improve reliability.

4. Operator Comfort & Maintenance

Full-hydraulic steering (in RK704 spec) for easier manoeuvring.
AgriExpo

Optional equipment: cabin or ROPS (roll-over protective structure). Cab version provides improved comfort (sound insulation, vibration damping) in RK704.

Maintenance-friendly features: large capacity fuel tank (so longer operation between refuels), easy-access hood with good opening angle to service engine and filters.

5. Summary of Competitive Advantages

Strong power and versatility (especially the 70 hp class in RK704) for medium agricultural operations.

Good implement compatibility (thanks to dual-speed PTO + adjustable hydraulics + adjustable track width) — especially important for markets where farms may vary widely in field size and crop type.

Reliability built-in: reinforced chassis, better sealing, heavy-duty transmission; useful in demanding environments (e.g., Nigeria’s field conditions).

Operator comfort & usability: ease of shifting (12F+12R), hydraulic steering, optional cabin, good service access; these can reduce operator fatigue and downtime.