Oil Injected Screw Air Compressor

When a compressed air station has to run two shifts a day at the lowest possible operating cost, this oil injected screw air compressor is the unit most plants specify first. Inside the cabinet, a twin-screw airend injects oil directly into the compression chamber: the oil seals the rotor clearances, carries heat out of the compression process and lubricates the rotors at the same time, which keeps the discharge temperature low and the airend life long. After compression, the air flows through a three-stage oil-gas separation system: first a cyclonic drop-out removes the bulk oil, then a coalescing element catches fine oil mist, and a final fine separation stage brings residual carry-over down to 3 ppm or less - which is why this line reaches air quality close to oil-free without the premium cost of a fully oil-free machine. The separator element uses a spin-on design that maintenance technicians can replace in minutes during scheduled service, and the dedicated synthetic lubricant is rated for an 8,000-hour service interval, so running costs stay predictable. The unit is built on an iron frame with an iron airend body, giving the structural strength expected in two-shift industrial plants. Compared with piston units, the screw design supplies continuous air with far fewer wearing parts; compared with oil-free scroll or centrifugal machines, it reaches the same reliability at a lower purchase and operating cost. An intelligent controller manages automatic load/unload cycles and motor protection, which makes the compressor suitable for the majority of general industrial processes that do not require Class 0 oil-free air. The screw airend is also designed for long bearing life under continuous electric drive, and the whole oil circuit - spin-on separator, oil filter and oil cooler - is laid out for fast, tool-light service. Because the iron construction and screw airend are industry-standard, spare castings and service procedures are familiar to technicians worldwide, so buyers are never locked into proprietary parts. For importers and system integrators, this line is also the mainstream SKU: it covers the common power bands used in metalworking shops, packaging lines and furniture factories.

This model is our highest-volume mainstream product line, with a monthly capacity of around 700 units on a standardized production line supported by ample component stock. For buyers who reorder in batches or supply local dealers, that means identical unit-to-unit consistency across orders and reliable delivery even at peak season, rather than waiting behind custom-engineered machines in the queue.

Applications

 

General machinery workshops. General machine tools and assembly lines need continuous, low-cost air rather than ultra-clean air; the 3 ppm outlet oil level is fully adequate for these tools, and the screw unit runs around the clock without the vibration and frequent valve maintenance of piston compressors.

Automotive component manufacturing. Assembly lines, pneumatic tools and tire service bays demand stable pressure across shifting demand; the automatic load/unload controller matches supply to line consumption, and the long 8,000-hour oil interval keeps planned maintenance inside standard weekend windows.

Hardware and metalworking. Pneumatic wrenches, spray guns and cleaning stations in forging and stamping shops expose compressors to dust and high ambient temperature; the iron frame, direct oil cooling and sealed cabinet tolerate this environment better than light-duty airends.

Packaging and printing. Filling lines, pneumatic cylinders and die-cutting equipment need steady pressure to avoid rejected products; mature screw technology means fewer unplanned stoppages, and spare consumables are locally available in most markets.

Building materials and furniture. Dust-collected sanding lines and pneumatic nailing equipment operate in multi-shift mode; a mature, lower-priced screw airend spreads the energy cost over long running hours while keeping maintenance budgets modest.

Customization

 

We can configure the oil injected screw compressor to project requirements: voltage and frequency for local grids, selection of the right power and pressure band from the series, integration options such as an air receiver or refrigerated dryer, outlet flange or hose connection size, and cabinet color. OEM and ODM branding are available for distributors and private-label buyers, and a pre-production sample unit can be built for confirmation before mass production.

Units are packed for export on wooden pallets with plastic foam cushioning that protects the cabinet and cooler during long-distance sea and land transport. Trade terms support EXW, FOB, CIF and DDP, so buyers can choose from factory pickup to door delivery. Standard units ship within 40 days and customized units within 60 days, with a payment structure of 30% advance before production and 70% balance before shipment.

FAQ

 

Q: What is your MOQ for the oil injected screw air compressor?

A: The MOQ is one unit, so small workshops, local distributors and pilot projects can order without taking on full-container risk.

Q: Can I confirm one machine before mass production?

A: Yes. Before bulk production we build one sample machine for your confirmation on specifications and workmanship, then proceed with the rest of the order.

Q: What after-sales support do you provide?

A: We offer a one-year warranty, with a dedicated after-sales team responding within 2 hours and resolving problems within 24 hours. If a machine arrives damaged, we trace the cause and arrange repair.

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