I. Product Overview
The 4.5kW micro-oil lubricated screw
Vacuum Pump is a compact, moderately powerful vacuum generating device. It innovatively combines the stability and reliability of screw technology with the efficient cooling performance of oil lubrication and sealing, providing a vacuum solution for industrial applications that combines cleanliness and efficiency.
As a new type of vacuum equipment using a screw design, its core working principle is to achieve gas extraction by periodically changing the inter-tooth volume through the synchronous counter-rotation of a pair of asymmetrical screw rotors. The most significant technical feature of the equipment is the use of a small amount of lubricating oil (oil content < 2PPM) to form a sealing oil film. This combines the cleanliness advantages of dry vacuum pumps with the high efficiency characteristics of oil-lubricated pumps, making it widely suitable for industrial fields with strict vacuum requirements.
II. Core Advantages
High Efficiency and Energy Saving, Low Operating Costs
Compared to traditional vacuum pumps, this equipment achieves an energy saving rate of over 30% and a volumetric efficiency of up to 95%, outputting a stable vacuum with lower energy consumption. Long-term use can significantly reduce enterprise operating costs. Some advanced models (such as the Atlas Copco GHS VSD+ series) are equipped with variable frequency drive technology to further optimize energy consumption and adapt to vacuum requirements under different working conditions. Low-noise operation, adaptable to multiple scenarios: The equipment's operating noise is controlled at 55-85dB, far below the industry average for similar products, reducing noise interference to the production workshop environment. It is especially suitable for precision manufacturing and pharmaceutical production scenarios where a high level of comfort is required. Simplified structure, convenient maintenance: The overall design is simple, with a reasonable layout of core components, requiring no complex operations for daily maintenance. Coupled with a reliable oil lubrication system, it effectively reduces wear on internal components, lowers the failure rate, and alleviates the operational and maintenance burden on enterprises. Strong environmental adaptability, wide working condition compatibility: It possesses excellent anti-interference capabilities and can stably handle complex working conditions containing water vapor, dust, or corrosive gases without the need for additional pretreatment equipment, greatly improving operational flexibility and adapting to the production needs of multiple industries. Stable, reliable, and long service life. The screw technology itself offers advantages such as smooth operation and low vibration. Combined with the friction-reducing protection of the oil lubrication system, the overall lifespan of the equipment is significantly extended, meeting the needs of long-term continuous operation in industrial scenarios and reducing equipment replacement frequency and investment costs. III. Applicable Scenarios. This equipment, with its comprehensive advantages of "cleanliness + high efficiency + stability," is widely used in fields with strict vacuum environment requirements. Core application scenarios include: Pharmaceutical industry: freeze dryer vacuum systems, solvent recovery processes, and creating vacuum environments for pharmaceutical packaging; Chemical industry: corrosive gas treatment, easy-to-condense medium transfer, and reactor vacuum control; Semiconductor industry: ensuring high-cleanliness vacuum environments in wafer processing, coating processes, and chip manufacturing; General industry: long-term continuous operation scenarios such as food packaging vacuum preservation, electronic display production, and oil and gas recovery in oil extraction. IV. Selection and Usage Recommendations. Confirm Technical Parameter Matching. Before selection, refer to the detailed technical manual provided by the manufacturer, focusing on verifying key parameters such as pumping speed, ultimate vacuum, and interface size to ensure consistency with actual production process requirements and avoid affecting production efficiency due to parameter mismatch. **Prioritize Oil Lubrication System Maintenance:** Clearly define the oil change interval and recommended lubricant type. Strictly adhere to the requirements for using compliant oils and changing them regularly. This is crucial for ensuring stable pump performance and extending service life.
**Assess Supplier Service Capabilities:** Prioritize suppliers with comprehensive after-sales service systems to ensure timely technical support and a stable supply of spare parts, preventing production stoppages due to equipment malfunctions.
**Comprehensive Lifecycle Cost Consideration:** In addition to initial purchase costs, it's essential to calculate the long-term energy consumption and maintenance costs of the equipment. While high-efficiency, energy-saving models may have a slightly higher initial investment, their energy and maintenance cost advantages significantly reduce the total investment in the long run, resulting in higher cost-effectiveness.
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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