The micro oil-lubricated
Screw Vacuum Pump, a groundbreaking innovation in modern vacuum technology, has redefined the performance boundaries of industrial-grade vacuum equipment. Its core lies in a high-precision asymmetric screw rotor configuration, which achieves periodic changes in the inter-tooth volume through synchronous counter-rotation. This design not only embodies exceptional mechanical engineering aesthetics in principle but also achieves synergistic improvements in both pumping efficiency and system cleanliness in practice.
The key breakthrough of this device lies in its use of micro-lubricant technology (oil content <2 ppm), which creates an extremely thin yet complete sealing oil film between the rotors. This design cleverly balances the pollution-free nature of a dry
Vacuum Pump with the efficient sealing performance of an oil-lubricated pump. This significantly improves volumetric efficiency (reaching over 95%) and reduces energy consumption with virtually no oil contamination, resulting in energy savings of over 30% compared to traditional vacuum solutions. Furthermore, its operating noise level is kept within the 55–85 dB range, significantly improving the working environment on industrial sites.
Beyond its high efficiency and quietness, this pumpx27s true strength lies in its excellent adaptability to various operating conditions. It can stably handle complex media containing water vapor, particulate dust, and even corrosive gases, without causing clogging or corrosion, significantly improving system reliability. Its compact design offers long maintenance cycles, convenient operation, and continuous operation, making it suitable for high-load industrial environments.
At the application level, this technology is becoming a core vacuum option for high-purity processes. In the pharmaceutical industry, it is used in freeze dryers and solvent recovery systems to ensure GMP-compliant pharmaceutical production environments. In semiconductor manufacturing, it provides a stable and reliable vacuum environment for critical processes such as wafer etching, CVD, and PVD coating. In chemical applications, it can safely handle corrosive and condensable media. It also plays a key role in vacuum preservation in food packaging, OLED display manufacturing in the electronics industry, and oil and gas recovery in oil production.
The micro oil-free screw vacuum pump is not only a technological evolution but also a new type of infrastructure designed to meet the needs of high-end manufacturing, green energy conservation, and intelligent manufacturing. It meets the complex requirements of modern industry for vacuum equipment that is clean, efficient, reliable, and environmentally friendly, demonstrating broad industry penetration and profound technological prospects.
It is a Rotary vane vacuum pump in which oil-sealed vanes rotate inside an eccentric stator to trap and exhaust air from the suction chamber. The oil continuously seals the clearances, lubricates the moving parts and cools the pump, allowing it to achieve deep vacuum reliably — typically from 10 to 0.5 mbar, or lower with two-stage designs.
Q2. Which applications is it used for? +
It is the most widely used vacuum pump for general industrial and laboratory duties: vacuum packaging and food processing, pharmaceutical and medical equipment, electronics manufacturing, plastic molding and degassing, printing, lamination, woodworking, dairy and beverage filling, refrigeration/AC evacuation, and laboratory vacuum systems.
Q3. What ultimate vacuum can it achieve? +
Single-stage pumps typically reach about 0.5 mbar; two-stage pumps reach 0.1 mbar or below. The right choice depends on your process: 0.5 mbar covers most packaging and industrial needs, while lower ultimate vacuum suits laboratory and analytical applications.
Q4. What pumping speed ranges do you offer? +
Our oil vacuum pumps cover a wide range from about 1.5 to 250 m³/h, from compact lab pumps to large industrial units. Tell us your chamber volume, required vacuum level and cycle time — we will size the pump for the optimum evacuation time.
Q5. Why is oil important in this pump? +
Oil performs three essential jobs: it seals the clearance between vanes and stator for deep vacuum, lubricates all moving parts to prevent wear, and cools the pump during operation. High-quality vacuum oil with a good service interval is the key to stable performance and long pump life.
Q6. How often must the oil be changed? +
Oil change intervals depend on operating conditions — typically every 500–2,000 operating hours, or sooner when pumping heavy vapors or dust. The pump has a clear sight glass for oil level/condition checks; we supply the correct vacuum oil and service kits and provide a maintenance schedule for your duty.
Q7. What is the gas ballast valve for? +
The gas ballast valve admits a small amount of air into the compression stage, preventing water vapor or solvent vapor from condensing and contaminating the oil. It is essential when pumping humid or solvent-laden gases, and simply closed when pumping dry air for maximum ultimate vacuum.
Q8. Is there oil mist in the exhaust? +
Under normal operation an internal oil separator and optional exhaust oil mist filter capture oil carryover, keeping the exhaust clean and returning oil to the sump. We offer high-efficiency mist eliminators and oil recovery systems for sensitive or cleanroom environments.
Q9. How noisy is it? +
Our pumps are designed for quiet operation — typically 55–68 dB(A) depending on model — with balanced rotors and optional acoustic enclosures. For noise-sensitive sites we can supply enclosure or remote-installation solutions.
Q10. How does it compare with a dry vacuum pump? +
Oil pumps offer deeper vacuum and lower purchase cost, but require periodic oil changes and produce small oil waste. Dry pumps avoid oil but cost more and suit clean, chemically aggressive processes. For most general industrial and packaging applications, an oil pump is the most economical, reliable choice.
Q11. What maintenance does it require? +
Routine maintenance is simple: check the oil level and condition via the sight glass, change the oil and intake filter on schedule, and inspect the exhaust filter and valves periodically. We provide a full service kit (oil, filters, gaskets) and clear instructions so your own team can maintain it easily.
Q12. What are the installation requirements? +
Place the pump on a level, stable surface with adequate ventilation, connect the suction line (short and large-diameter for best performance), and provide the correct motor power supply. Optional accessories include inlet filters, vacuum gauges, solenoid valves and vacuum regulators to complete your system.
Q13. Can it handle humid or corrosive gases? +
With the gas ballast open and regular oil changes, the pump handles water vapor and light solvents well. For aggressive or corrosive media we recommend suitable oil grades, inlet coalescing filters, or our chemically-resistant versions — confirm the gas composition with us and we will configure accordingly.
Q14. Do you support customization and OEM/ODM? +
Yes. As the manufacturer, we customize voltage/frequency (e.g. 110V/220V/380V, 50/60Hz), motor power, accessories and packages (pump + tank + valves + gauges), color and branding, plus OEM/ODM with your logo and documentation.
Q15. What certifications do you hold and what is the lead time? +
Our factory is ISO 9001 certified and the pumps carry CE certification, with other certificates available for your market. Standard models ship within 7–20 days after order confirmation, customized units 20–40 days, export-packed for sea or air freight.
Q16. What warranty and after-sales support do you provide? +
We offer a 12–24 month warranty, 24/7 remote technical support with troubleshooting guidance, operator training, and long-term supply of vacuum oil, spare parts and service kits — typically dispatched within 3–7 days to keep your production running.
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