Blait is the leading industrial compressor manufacturer and supplier in China. As a premium producer, we provide a comprehensive range of industrial compressors for specialized applications. We proudly present the YBF4VCS-6.2Z~YBF4NCS-20.2G MEDIUM FOUR-CYLINDER PISTON COMPRESSOR, engineered with state-of-the-art technology and uncompromising reliability. Experience industrial-grade performance - contact us today for technical specifications and pricing solutions.
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YBF4VCS-6.2Z~YBF4NCS-20.2G
Blait
Blait, a leading industrial refrigeration solution provider in China, presents the YBF4VCS-6.2Z~YBF4NCS-20.2G Medium Four-Cylinder Piston Refrigeration Compressor—a high-performance, reliable unit engineered for medium-duty cooling needs. Equipped with an 8HP/5.5kW motor, this compressor delivers consistent refrigeration output for cold storage, industrial cooling setups, and HVAC systems. It supports multiple refrigerants (R22, R404A, R507A) and integrates state-of-the-art technologies like forced lubrication and pre-installed crankcase heaters, ensuring stable operation across condensing temperatures of 30–50℃.

Compact & Lightweight Design: Weighing only 122kg (including oil), the compressor simplifies installation and transportation, saving space in tight industrial environments.
High Energy Efficiency: Optimized valve plates, minimized dead space, and a heavy-duty motor reduce power consumption (≤9.4kW for R22) while boosting the Coefficient of Performance (COP).
Two-Stage Capacity Control: Allows 50% or 100% load adjustment to match real-time cooling demands, cutting unnecessary energy use.
Forced-Lubrication System: A 2.6L oil volume ensures uniform lubrication of critical components, reducing friction and extending service life.
Low Vibration & Noise: A honeycomb exhaust silencer and circular structural design minimize mechanical oscillation, ideal for noise-sensitive areas.
Electronic Motor Protection: PTC sensors monitor motor windings and exhaust temperatures, preventing overheating and equipment damage.
Certified Quality: Blait adheres to ISO 9001 (quality), ISO 14001 (environmental), and ISO 45001 (safety) standards, with a National Industrial Product Production License.
R&D Excellence: Its Hangzhou-based R&D center employs 100+ staff (24 engineers) and collaborates with Xi’an Jiaotong University to optimize compressor efficiency.
Precision Manufacturing: Advanced CNC equipment achieves ±0.01mm tolerance for components like cylinder blocks, ensuring consistent performance.
Rigorous Testing: Compressors undergo strict validation in temperature-controlled test stations, guaranteeing compliance with global industry benchmarks.
Technical Specifications
Detailed Parameters Table
Compressor model | YBF4VCS-6.2Z~YBF4NCS-20.2G |
Nominal motor power | 6/4.4~20/15 |
Displacement (50Hz)m³/h | 34.73~56.25 |
Number of Cylinder x Diameter x Stroke mm | 4×φ55×42~4×φ70×42 |
Oil injection volume L | 2.6 |
Power supply V / Φ / Hz | 380 ~ 420YY/3/50 440 ~ 480YY/3/60 |
Max. operating current A | 14~37 |
Starting current / rotor locked current. operating current A | 39/68~97/158 |
Crankcase Heater (220V) W | 120 |
Oil supply method | Centrifgal lubrcation |
| Weight (including freezing oil) Kg | 127~142 |
Application limits Diagram
relating to 20℃ suction gas temperature

Performance Parameter






Boundary Dimension And Location Dimension
Of Bore Diameter Suction Gas Port And Discharge Gas Port

Cold Storage Facilities: Ideal for medium-temperature warehouses storing fruits, vegetables, and dairy products.
Industrial Cooling: Suitable for cooling equipment in food processing (e.g., beverage bottling) and small-scale manufacturing.
HVAC Systems: Complements commercial HVAC setups requiring reliable medium-duty refrigeration.
Daily Maintenance: Check oil levels and drain condensate from tanks.
Monthly Maintenance: Inspect belts, tighten bolts, and clean air filters.
Annual Maintenance: Replace piston rings/seals and lubricate moving parts.
Warranty: 12-month limited warranty on the compressor body; 12-month coverage for wear parts (e.g., filters). Blait offers technical support via email/phone within 4 business hours.