Kato NK75M-V2

The Kato NK-75M-V2, marketed under the “Super 75R” designation, is a hydraulic truck-mounted crane designed for light-duty lifting applications, offering a maximum lifting capacity of 4.7 tons at a 2.5-meter working radius. It is built on a 4.9-ton carrier chassis and designed with compact dimensions and practical mobility in mind, making it especially suited for urban environments or small construction sites.

The crane’s telescopic boom is a 4-section design, with the main boom extending from 6.65 meters to 21.5 meters, and capable of lifting:

• 4.9 tons at 3.8 m (8-part line)
• 3.5 tons at 5.0 m (4-part line)
• 2.0 tons at 6.5 m (2-part line)
• 1.3 tons at 7.0 m (1-part line)

An auxiliary jib of 2.5 meters is available, boosting the crane’s overall lifting height to 21.8 meters. Boom elevation ranges from –8° to 80°, and it can be fully elevated or lowered within 45 seconds, allowing for rapid setup and repositioning during operations.

The hoisting system includes two winches, utilizing hydraulic-powered gear mechanisms. The main hoist speed can reach 54 m/min at high speed and 10 m/min at low speed (2nd layer), while the hook speed ranges from 44 m/min (8-part line) to 90 m/min (1-part line). The crane is equipped with standard SeS (39) and WS (26) wire ropes for various rigging options.

The hydraulic system operates through a variable-capacity triple gear pump, with a maximum pressure of 205 kg/cm² (approx. 20.1 MPa). The oil tank holds 120 liters, and the oil control valve uses a multi-function distribution system with pressure-compensated flow control for smooth and responsive operation. Additionally, the crane incorporates auto-pressure unloading and a dedicated pilot-operated directional valve.

The NK-75M-V2 offers multiple carrier options, including truck models like Mitsubishi Fuso, Isuzu ELF, Hino, and Nissan Diesel, featuring engines ranging from 152 to 205 PS and designed to meet Japanese commercial vehicle regulations. The carrier variants typically run on 6.9-liter to 7.5-liter diesel engines, depending on the model selected, paired with manual transmissions and commercial chassis platforms with 2-person seating.

Safety is a key consideration for this model. It includes ACS (Automatic Computer Safety System), boom elevation limiters, over-winding prevention, hydraulic safety valves, drum rotation indicators, and automatic hoisting/braking systems. The crane also features outrigger extension sensors to prevent overload or improper leveling during lifting.

The standard equipment includes a radio, lighting system, heater fan, and a basic AM/FM radio unit, ensuring operational comfort even during long shifts.

In conclusion, the Kato NK-75M-V2 Super 75R is a light-duty, highly maneuverable truck crane that delivers efficiency and flexibility for small-scale lifting tasks. Its compact build, straightforward operation, and range of safety features make it a preferred choice for urban construction sites, maintenance work, and utility support where heavier equipment would be impractical.