7.5kW 4 in 1 Fixed Speed Single Stage Air Compressor

Elily’s 7.5kW 4-in-1 fixed-speed single-stage air compressor is an all-in-one unit integrated with a screw airend, air receiver tank, refrigerated dryer and precision filters. Space-efficient and free from complicated installation, it adopts a mature and sturdy fixed-speed motor to deliver high-purity compressed air for diverse industrial sectors.

1. Reliable Fixed-Speed Motor: Simple Structure & Low Maintenance

Fitted with a standard 7.5kW fixed-speed asynchronous motor and direct-drive structure to cut power transmission loss. It adopts proven star-delta starting without complicated inverter components. Dust-proof and temperature-resistant, the unit adapts to tough workshop conditions.

Compared with VFD compressors, it involves lower upfront investment and uses widely universal spare parts. Only routine maintenance is required every 2,000 working hours without dedicated technicians. It delivers stable continuous operation and extended service life.

2. Integrated 4-in-1 Design Saves Space & Installation Expense

This compact unit assembles the airend, certified air tank, plate-type refrigerated dryer and four-stage filtration system on one base. All piping assembly, airtightness inspection and system commissioning are finished in factory.

No separate dryers or filters need to be purchased. Cumbersome on-site piping layout and leak checks are unnecessary, realizing plug-and-play startup. It saves over 30% floor space versus split systems, perfectly suited for small workshops, studios and auto repair garages. The unit can be relocated easily by one worker.

3. Efficient Drying & Four-Stage Filtration Produces Dry, Clean Air

Equipped with a matched 1.6 m³/min refrigerated dryer, it efficiently condenses and removes moisture, maintaining a stable outlet pressure dew point ≤3°C. It avoids water buildup and rust inside pipelines and pneumatic tools.

The progressive four-stage precision filtration system sequentially eliminates liquid water, dust and oil contaminants, reaching 0.01 ppm filtration accuracy with residual oil content ≤0.001mg/m³. The clean compressed air satisfies strict standards for spray coating, precision instruments and food packaging applications.

4. Air-Cooled Thermal Design & Multiple Safety Safeguards Prevent Overheating

Designed with an enlarged plate-fin heat exchanger and high-power cooling fan plus optimized internal airflow channels. It supports continuous full-load operation under ambient temperatures up to 35°C and maintains safe discharge temperature to avoid overheating shutdown and pressure drop.

Standard intelligent PLC controller provides five safety protections: high temperature, high pressure, phase loss, overload and oil shortage. The system triggers automatic shutdown and alarm once abnormalities occur. Simple one-touch operation enables easy handling by new operators and guarantees safe and reliable running.

Product Specifications:

Product Applications:

Elily’s 7.5kW 4-in-1 fixed-speed single-stage air compressor delivers steady pressure and clean compressed air with outstanding cost efficiency. It is perfectly designed for small and medium-scale operations that demand consistent air supply on a reasonable budget.

Typical applications cover small laser engraving, pneumatic marking, automotive body repair and painting, laboratory precision air supply, woodworking processing, small packaging machinery, and auxiliary air for automated assembly lines. It is an optimal choice for regular production environments requiring dry compressed air, where variable frequency drive (VFD) function is unnecessary.

Product Capabilities

Guangdong Yili Machinery Equipment Co., Ltd. was founded in 2010 and is recognized as a High-Tech Enterprise in Guangdong Province. We focus on the R&D and manufacturing of integrated air compressors, including fixed-speed and variable-frequency types. 

Our modern production plant spans 20,000 square meters, with an annual output of over 5,000 units. Specialized production lines are built exclusively for 4-in-1 integrated fixed-speed compressors. Every unit undergoes five strict tests before shipment: pressure resistance, air tightness, temperature rise, noise measurement and aging testing. All air receivers are certified pressure vessels equipped with official inspection certificates.

With more than ten years of experience in the small and medium-sized compressed air supply sector, we have served over 1,500 small factories, auto repair chains and processing workshops. Our products are widely recognized for reliable durability, favorable cost performance and accessible after-sales support.

Warranty & After-Sales Service

The unit enjoys a 1-year warranty for the whole machine, and a 2-year warranty for core components.

We promise a 2-hour rapid response for service requests. On-site inspection and repair support is available within 48 hours for prefecture-level cities across China. Each machine is delivered with an illustrated operation manual, QR code linking to tutorial videos and a quick troubleshooting guide. A general electrician can grasp basic operation within 10 minutes.

Consumables including air filters, oil filters and lubricants are permanently stocked and can be dispatched within 48 hours. We also provide lifelong remote technical guidance, making routine maintenance manageable without dedicated professional technicians.

Logistics and Delivery

The Elily 7.5kW 4-in-1 fixed-speed single-stage air compressor adopts triple-layer reinforced packaging: solid wood pallet, stretch film and heavy-duty carton, which effectively protects the unit against shocks and collision damage during transit.

We provide direct dedicated truck delivery for customers located in major industrial cities. Clients in remote regions may collect goods from designated logistics terminals. Before shipment, internal tank pressure is fully released and all pipeline ports are sealed to ensure standardized and safe transportation.

If you find damaged packaging or equipment deformation upon arrival, please retain photos as evidence and contact our customer service team promptly for after-sales arrangements.

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FAQ

Q: How many pneumatic tools can this 7.5kW fixed-speed 4-in-1 compressor drive?

A: It can simultaneously run 2 to 3 small pneumatic wrenches or air blow guns, or operate one small laser engraving machine or spray gun. It satisfies basic centralized air demand for regular small workstations.

Q: Is 24-hour continuous operation available for this fixed-speed unit?

A: Yes. The fixed-speed motor features robust structure and optimized heat dissipation, enabling non-stop full-load operation round the clock. It effectively avoids overheating faults and fits long-running assembly line production.

Q: What is your minimum order quantity?

A: The MOQ for standard models is 1 unit. OEM customized orders require 5–10 units subject to detailed customization demands.

Q: What is your warranty policy?

A: We offer a 1-year warranty for the complete machine and a 3-year warranty for core components, including the motor, compressor airend and VFD.

Q: Can you supply CE and ISO certifications?

A: All compressors are CE certified and comply with ISO9001 quality management standards. Scanned original certificates can be provided to support export customs clearance.

Q: Can voltage and frequency be customized?

A: Yes. We support 220V, 380V, 400V, 415V, 440V with 50Hz / 60Hz options. Please confirm local voltage specifications before placing orders.

Q: Do you offer video guidance for installation and commissioning?

A: Yes. Our engineers provide real-time remote video support via WhatsApp, Zoom, WeChat and other tools to guide installation, wiring, parameter setup and startup commissioning.

Q: Can I mix different models in one order?

A: Yes. Orders can contain multiple models of different power and configurations. MOQ requirements are calculated based on the whole order.