China Air-Cooled Roots Vacuum Pump Suppliers | High-Performance Factory Equipment for Reliable Vacuum Solutions
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The accessories are precisely manufactured by imported processing centers, with strict control of the gaps between rotors and between rotors and the pump body, ensuring stable operation when the gap is less than 0.05mm.
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Independently produced and manufactured, it has over 40 vacuum-related patents, has been rated as a national high-tech enterprise and a science and technology enterprise, and has passed ISO9001 quality management system certification.
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The spiral jacket cooling method ensures excellent heat exchange efficiency, fully guaranteeing the low-temperature lubrication performance of the lubricating oil, thereby extending the service life of gears, bearings and mechanical seals.
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A bypass valve is set inside, allowing the Roots vacuum pump and the preceding vacuum pump to almost simultaneously start under atmospheric conditions to shorten the pumping time.
Product Parameters
| Model Number | ZJQ-300 | ZJQ-600 | ZJQ-1200 | ZJQ-2500 | ZJQ-3750 | ZJQ-5000 |
|---|---|---|---|---|---|---|
| Maximum Suction Rate (L/S) | 300 | 600 | 1200 | 2500 | 3750 | 5000 |
| Limiting Pressure (Pa) | 15000 | 15000 | 15000 | 15000 | 15000 | 15000 |
| Speed (rpm) | 1480 | 1460 | 1470 | 1470 | 1470 | 1470 |
| Rated Power (KW) | 5.5～37 | 7.5～75 | 15～132 | 22～280 | 30～400 | 45～710 |
| Intake and Exhaust Diameters (mm) | 125 | 250 | 300 | 350 | 350 | 400 |
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Note: The motor power of the pump, the heat exchange area of the cooler, and the water consumption are determined based on the actual working pressure difference. Different pressure differences require different motors and coolers, and the water consumption will also vary.
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Frequently Asked Questions
Q
What does the model number in the ZJQ series indicate?
The number in each ZJQ model name corresponds directly to its maximum suction rate in liters per second (L/S). For example, ZJQ-300 has a maximum suction rate of 300 L/S, while ZJQ-5000 reaches up to 5000 L/S.
Q
Why does the rated power show a range rather than a fixed value?
The rated power is given as a range because the required motor power varies depending on the actual working pressure difference in your application. A higher pressure difference demands a more powerful motor. Please consult with our technical team to select the appropriate motor for your specific operating conditions.
Q
Is the limiting pressure of 15,000 Pa consistent across all ZJQ models?
Yes. All six models in the ZJQ series — from ZJQ-300 to ZJQ-5000 — share the same limiting pressure of 15,000 Pa, ensuring consistent vacuum performance across the entire product range.
Q
How do I choose the right ZJQ model for my application?
Selection should be based on your required suction rate (L/S), operating pressure difference, and available power supply. Start by identifying your target vacuum flow rate, then match it to the appropriate model. Factor in the actual working pressure difference to determine the correct motor power and cooler heat exchange area.
Q
Does the cooler configuration change between different models?
Yes. The heat exchange area of the cooler and the water consumption are both determined by the actual working pressure difference, not just the model size. Even within the same model, different operating conditions may require different cooler configurations and result in varying water usage.
Q
What are the intake and exhaust diameter options across the ZJQ series?
The intake and exhaust diameters range from 125 mm (ZJQ-300) up to 400 mm (ZJQ-5000). Mid-range models such as ZJQ-1200 use 300 mm, while ZJQ-2500 and ZJQ-3750 share a 350 mm diameter. Proper pipe sizing matching these diameters is essential for optimal system performance.