The FKX 40/470 K is optimized for balanced performance and adaptability, with key specs including:

• Refrigerant Compatibility: Supports multiple refrigerants such as R134a, R407C, and R513A, aligning with diverse environmental and application requirements.
• Mechanical Configuration: Features 4 cylinders with a bore of 55 mm and stroke of 49 mm, delivering a swept volume of 466 cm³—ensuring sufficient cooling output for large-capacity mobile systems.
• Operational Range: Boasts a wide permissible rotation speed of 500–3500 r/min, adapting to varying engine speeds in vehicles; maximum allowable overpressure (gauge pressure) is 19 bar (low-pressure side) and 28 bar (high-pressure side), ensuring safe operation under high-load conditions.
• Weight & Size: Weighs 34 kg with a compact footprint, enabling easy integration into vehicle engine bays or cooling systems where space is limited.

• Durable Build: Adopts a semi-hermetic aluminum structure—combining light weight (reducing vehicle load) with high structural strength, capable of withstanding vibration and shock in mobile environments (e.g., bumpy roads for buses).
• Lubrication & Leakage Control: Equipped with an oil pump featuring a rotation-independent oil pressure relief valve, ensuring stable lubrication regardless of operating speed; also includes an integrated oil leakage capture device with an oil reservoir, minimizing refrigerant and oil leakage risks.
• Enhanced Valve Plate Design: Uses a K-type valve plate system, which excels in handling high-cycle, high-demand cooling scenarios (e.g., peak-hour bus air conditioning), improving compression efficiency and extending component lifespan.

To fit diverse system needs, the FKX 40/470 K offers flexible accessory options and compatibility:

• Capacity Regulator: Can be equipped with a 24V DC, IP65-rated capacity regulator—enabling precise control of cooling output based on real-time temperature demands, reducing energy consumption.
• Electromagnetic Clutch: Standard 24V DC LA 16 electromagnetic clutch with 39W power consumption, ensuring reliable on/off control of the compressor, with low power loss.
• Optional Heater: Optional 24V DC, 80W oil sump heater—prevents oil viscosity from increasing in low-temperature environments (e.g., cold winters), ensuring smooth startup and operation.

Primarily designed for mobile cooling in public transport and rail, including city buses, intercity coaches, and rail transit vehicles. Its compatibility with multiple refrigerants and ability to operate in dynamic, high-demand environments make it a reliable choice for maintaining consistent cabin temperatures, even under fluctuating passenger loads and external weather conditions.