- Working Pressure :8 bar
- Power KW: 4 kW
- Volume of gas storage tank(L):250
- Weight KG:358 kg
- Exhaust volume(L/min):550
- Motor(kw/HP):4/6.5
Engineered for reliability in demanding workshop environments, our air-cooled piston compressor utilizes high-velocity cooling fans and finned cylinder designs to dissipate heat rapidly, enabling longer run times and consistent performance. Key advantages include:
Rapid Heat Dissipation: Air-cooled design prevents overheating during extended use
Durable Construction: Heavy-duty cast iron pump and precision-machined components
Low Maintenance: Simple design with easily accessible service points
Versatile Applications: Perfect for garages, farms, small workshops, and DIY enthusiasts
Easy Installation: No water cooling connections required – just plug and play
Product Parameters
Item | 2.2KW | 4KW | 5.5KW | 11KW | 15KW |
Model | 2.2KW | 4KW | 5.5KW | 11KW | 15KW |
Motor(kw/HP) | 2.2/3 | 4/6.5 | 5.5/7.5 | 11/15.5 | 15/18.5 |
Piston variable displacement(L/min) | 300 | 811 | 1068 | 2036 | 2901 |
Exhaust volume(L/min) | 200 | 550 | 670 | 1500 | 1800 |
Exhaust pressure(bar) | 8 | 8 | 10 | 12 | 16 |
Cylinder(diameter x piece) | 652/511 | 902/511 | 80*3 | 100*3 | 120*3 |
Stroke(mm) | 48 | 75 | 60 | 80 | 90 |
Rotate speed of air compressor(rpm) | 940 | 850 | 1180 | 1080 | 950 |
Volume of gas storage tank(L) | 100 | 250 | 150 | 250 | 500/300 |
Overall dimension(L×W×H cm) | 1114385 | 16457117 | 13052108 | 16563120 | 18672145/16270132 |
Packing dimension(L×W×H cm) | 1185188 | 17771120 | 14264118 | 14777126 | 19687149/17273140 |
Net weight(kg) | 140 | 358 | 206 | 385 | 619/508 |
Gross weight(kg) | 174 | 410 | 230 | 414 | 684/508 |
Piston Air-cooled Air Compressor 4KW
Overview
Our industrial piston air-cooled air compressor series is designed for demanding applications where reliability, serviceability, and performance cannot be compromised. Built with oversize components, slow operating speeds, and heavy-duty construction, these compressors provide years of trouble-free service in the most challenging environments.
Compressor Pump – The Heart of the System
The pump assembly represents the culmination of decades of compressor engineering experience. Each unit features:
Cast Iron Construction: The cylinder, crankcase, and cylinder head are manufactured from high-grade cast iron, providing exceptional wear resistance, superior heat dissipation, and dimensional stability under load
Precision-Machined Components: Cylinder bores are honed to micron-level tolerances for optimal ring sealing and minimal blow-by
Oversize Bearings: Main and rod bearings are selected with generous safety factors to handle continuous-duty applications
Low RPM Operation: Operating speeds typically 600–900 RPM reduce wear rates and extend service intervals compared to high-speed alternatives
Lubrication Systems: Choose splash lubrication for simplicity or pressure lubrication for demanding continuous operation
Advanced Air-Cooling Technology
Unlike water-cooled designs that require external cooling infrastructure, our air-cooled system simplifies installation while maintaining excellent thermal management:
Optimized Fin Design: Maximum surface area on cylinders and heads for efficient heat transfer
High-Flow Cooling Fan: Directs substantial airflow across all hot components
Intercooler (Two-Stage Models): Large-diameter copper or aluminum intercoolers reduce air temperature between stages, improving efficiency and reducing power consumption
Thermal Barrier Coatings: Optional ceramic coatings on piston crowns and combustion chambers reduce heat transfer to cooling system
Two-Stage Compression for Higher Efficiency
For applications requiring higher pressures or improved efficiency, two-stage models offer significant advantages:
Reduced Compression Ratio Per Stage: Lower cylinder temperatures, improved volumetric efficiency, and reduced power consumption
Interstage Cooling: Cooling between stages brings air temperature down, reducing final discharge temperatures
Higher Pressures: Achieve pressures up to 15 bar (217 PSI) efficiently
Improved Reliability: Lower component temperatures extend valve and ring life
Drive System Options
Belt Drive: Quiet operation, flexible speed adjustment, and motor protection through belt slippage
Direct Drive: Compact footprint, fewer moving parts, and positive power transmission
Control & Monitoring Systems
Industrial Pressure Switches: Heavy-duty contacts rated for millions of cycles
Magnetic Starters: Provide motor overload protection and undervoltage protection
Hour Meters: Track maintenance intervals accurately
Remote Monitoring Capability: Optional PLC integration for facility-wide compressed air management
Typical Industrial Applications
Automotive service and repair facilities
Small to medium manufacturing operations
Construction sites and contractors
Agricultural operations and farms
Mining support facilities
Military and government installations
Remote locations where water cooling is impracticalservice in your application.
Quick Quote
Leading Air Compressor Manufacturer & Supplier in China
RUILINHG Air Compressor is one of China’s leading manufacturers of high-performance air compressors. We provide global customers with technologically advanced, environmentally friendly, and reliable products at highly competitive prices, while supporting customization to flexibly meet diverse requirements.
Our products feature a long service life, energy efficiency, and environmental protection. We continuously monitor the latest trends in the air compressor market and consistently update our product designs and core technologies to ensure that the air compressor solutions we provide meet customer needs.
About RUILING Air Compressor
Piston Air-cooled Air Compressor
Advantages
Affordable Acquisition: Significantly lower purchase price compared to rotary screw, centrifugal, or other compressor types. No Special Infrastructure: No need for water lines, cooling towers, or three-phase power in many cases. Minimal Installation Costs: Simple electrical connection and placement – no specialized foundation or plumbing required. Quick Payback: Lower capital investment means faster return on investment for your business.
CONTACT US
Address:
Office: Lanshan District, Linyi City, Shandong Province, China
Best-Selling Products
Our self-manufacturing model endows our air compressors with distinct cost advantages, while our advanced technologies enable our products to stand out in the fierce market competition.