Unleash unparalleled industrial prowess with the Large Power Oil-Lubricated Screw Compressor from China's premier supplier, Sanzhi (Henan) Compressor Co., Ltd. Elevate your operations with factory-direct pricing on this state-of-the-art Permanent Magnet Variable Frequency Two-Stage Screw Air Compressor, expertly engineered for exceptional energy savings and superior efficiency. Featuring premium High-Quality Centrifugal Fans, this stationary compressor sets a new industry standard in reliability and performance, perfectly suited for the most demanding applications. Harness the power of advanced technology with Sanzhi's 185kw High Volume Two-Stage Screw Air Compressor for Industrial Use, ensuring extraordinary durability and consistency in your operations. Experience unparalleled efficiency, unwavering reliability, and exceptional cost-effectiveness with Sanzhi's groundbreaking compressor technology, designed to enhance your industrial processes and drive them to new pinnacles of performance and sustainability.
Detailed View: Internal Structure Frontside
Detailed View: Internal Structure Backside
Advanced Working Principle
In an ideal air compression scenario, the power required for single-stage pressure transmission equals the cumulative power for multi-stage compression. However, in reality, factors such as coupling transmission losses, bearing friction, and the cooling effects of liquid viscosity increase the power demand. To enhance efficiency, it is essential to minimize the compression ratio at each stage, ensuring the total power required for multi-stage compression is lower than that of single-stage compression.
The cutting-edge two-stage screw air compressor features a sophisticated dual rotary screw mechanism, integrating both active and passive screws. Driven by an external transmission, the active screw propels the passive screw into action. The system begins with a low-pressure screw group in the first stage, followed by a high-pressure screw group in the second stage. Each screw is enveloped by a sealing air film, facilitating seamless gas compression through sequential suction, pressurization, and exhaust cycles during the rotation.
First Stage Compression: During this initial phase, the low-pressure screw group initiates the gas compression process. Gas is drawn into the screw compression chamber through the suction valve. The rapid rotation of the screw rotor compresses the gas efficiently, transferring it to the second stage.
Second Stage Compression: In this advanced stage, the gas enters a more confined screw space, undergoing compression at significantly higher temperatures and pressures. The exhaust valve then opens, releasing the high-pressure gas from the system.
Natural air is first drawn into the initial stage through an air filter, where it mixes with a small amount of lubricating oil in the compression chamber. The gas is then compressed to interstage pressure and cooled in the cooling channel by contact with oil mist, significantly lowering its temperature. The cooled gas proceeds to the second-stage rotor for further compression to the final exhaust pressure. The entire process concludes as the compressor discharges the high-pressure gas through the exhaust valve.
| Sanzhi (Henan) Compressor Co,. Ltd. |
| Two-Stage Compression Permanent Magnet Variable Frequency Screw Air Compressor |
| Model |
Power |
Exhaust pressure |
Free air delivery* of unit at working pressure |
Voltage |
Frequency |
Air outlet discharge size |
Weight |
Dimensions |
| KW |
Mpa |
m³/min |
V |
Hz |
Inch |
Kg |
L*W*H(mm) |
| SZ15VF-II |
15 |
0.5 |
4.00 |
380 |
50 |
G1½ |
660 |
1450*780*1180 |
| 0.8 |
3.00 |
| 1.3 |
2.00 |
| SZ19VF-II |
18.5 |
0.5 |
5.00 |
380 |
50 |
G1½ |
680 |
1450*780*1180 |
| 0.8 |
4.00 |
| 1.3 |
3.80 |
| 1.6 |
2.20 |
| SZ22VF-II |
22 |
0.5 |
6.60 |
380 |
50 |
G1½ |
730 |
1650*880*1280 |
| 0.8 |
4.20 |
| 1.3 |
3.00 |
| 1.6 |
2.50 |
| SZ30VF-II |
30 |
0.5 |
7.00 |
380 |
50 |
G1½ |
980 |
2000*1260*1560 |
| 0.8 |
6.40 |
| 1.3 |
4.00 |
| 1.6 |
3.00 |
| SZ37VF-II |
37 |
0.5 |
10.00 |
380 |
50 |
G1½ |
1080 |
2000*1260*1560 |
| 0.8 |
7.00 |
| 1.3 |
5.50 |
| 1.6 |
4.00 |
| SZ45VF-II |
45 |
0.5 |
13.00 |
380 |
50 |
G2 |
1980 |
2000*1260*1560 |
| 0.8 |
10.00 |
| 1.3 |
6.50 |
| 1.6 |
5.00 |
| SZ55VF-II |
55 |
0.5 |
17.00 |
380 |
50 |
G2 |
2180 |
2150*1300*1730 |
| 0.8 |
12.00 |
| 1.3 |
8.60 |
| 1.6 |
5.00 |
| SZ75VF-II |
75 |
0.5 |
20.00 |
380 |
50 |
G2 |
2280 |
2150*1300*1730 |
| 0.8 |
16.50 |
| 1.3 |
11.00 |
| 1.6 |
9.00 |
| SZ90VF-II |
90 |
0.5 |
24.00 |
380 |
50 |
DN65 |
3200 |
2700*1920*1820 |
| 0.8 |
20.00 |
| 1.3 |
14.00 |
| 1.6 |
11.00 |
| SZ110VF-II |
110 |
0.5 |
28.00 |
380 |
50 |
DN65 |
3360 |
2700*1920*1820 |
| 0.8 |
24.50 |
| 1.3 |
18.00 |
| 1.6 |
14.00 |
| Due to product updates, the above parameters are subject to deviation in kind. |
Unveil the extraordinary power and unmatched efficiency of our High Volume Centrifugal Fan Two-Stage Air Compressor! This state-of-the-art system, featuring a high-speed rotating impeller, meticulously accelerates and decelerates air for axial entry and swift cooling. Surpassing traditional air-cooled fans, it ensures continuous operation and substantially prolongs service life.
1) Exceptional Efficiency of PM Motor:Our innovative permanent magnet motor boasts an expanded constant torque range and weak magnetic range, delivering 20-30% higher efficiency compared to standard motors. It consistently provides superior performance, even when operating beyond the rated frequency.
2) Maintenance-Free Motor Design:Ingeniously engineered, our permanent magnet motor is devoid of internal bearings, eliminating the need for costly maintenance and replacement commonly associated with traditional motor bearings.
3) Integrated Frequency Converter Mastery:Equipped with China's top-tier frequency system, our compressor offers an extensive and precise speed regulation range. It seamlessly adapts to varying gas demands, ensuring remarkable energy efficiency.
4) Absolute Zero Transmission Loss:The innovative integrated shaft structure directly connects the permanent magnet motor to the compressor, doing away with couplings and other transmission parts, thus guaranteeing impeccable 100% transmission efficiency.
5) Variable Frequency and Soft Start Innovation:This feature vastly diminishes the impact on power grid equipment, effectively protecting electrical systems from potential harm.
6) Drastically Reduced Energy Consumption:Our frequency conversion capability ranges from 25% to 100%, outpacing the standard 50% to 100% range. This results in over 30% energy savings compared to fixed-speed air compressors and approximately 5% more savings than standard variable frequency compressors. Greater system gas consumption fluctuations further enhance these energy-saving effects.
7) Distinctive Two-Stage Compression Air End:Our uniquely designed air end incorporates first-stage and second-stage compression rotors within a single housing, each driven directly by gears. This configuration ensures optimal linear speed and maximizes compression efficiency.
8) Advanced Internal Spray Curtain Cooling Method:Our cutting-edge internal spray curtain cooling method provides superior cooling, significantly lowering the temperature of compressed air. It achieves near-isothermal compression, minimizing interstage pressure loss, reducing compression ratios, and enhancing overall compression efficiency.
9) Significantly Minimized Internal Leakage:By lowering the compression ratio for each stage, our two-stage compression method minimizes internal leakage from high-pressure to low-pressure ends, thereby significantly boosting volume efficiency.
10) Remarkable Noise Reduction:The two-stage compression system effectively reduces the compression ratio, leading to significantly lower noise levels, especially during unloading.
11) Effortless Maintenance and Service:With a two-stage compressor unit, the similarities in systems and structures to single-stage compression make maintenance and user servicing straightforward and convenient, aside from the screw air end.
12) Door panels are removable:The unit's casing, crafted from noise-treated metal plates, features panels equipped with high-density sound-absorbing material, ensuring the noise level meets international standards. The door plate can be opened and disassembled, offering a 270-degree all-round access, facilitating maintenance personnel's access to the unit's interior and enhancing ease of service and upkeep.
1. Unmatched Price Competitiveness
We offer direct ex-factory prices, ensuring our customers maintain a significant edge in their markets. Experience substantial cost savings combined with outstanding quality, empowering you to lead and conquer your market with confidence.
2. Seamless Direct Transactions
Our products are delivered straight from the factory, enabling us to offer more budget-friendly solutions. By cutting out intermediaries, we pass the savings directly to you, guaranteeing affordability without compromising on quality.
3. Exceptional OEM & ODM Services
Harnessing our advanced production and management capabilities, we deliver superior OEM and ODM services tailored precisely to your needs. Collaborate with us to realize your vision with unmatched precision and excellence.
4. Tailored Customization
We are open to non-standard, export, and custom orders for voltage, power, pressure, and more. Reach out to discuss your specific needs, and let us craft a solution that perfectly aligns with your unique specifications.
5. Acceptance of Small Orders
Initiate a small trial order to experience the outstanding quality of our products firsthand. See why our clients consistently rely on SANZHI for superior performance and reliability.
6. Swift and Reliable Delivery
Take advantage of our premium products coupled with prompt and efficient delivery services. We ensure that your orders arrive on time, keeping your operations seamlessly functional.
7. Comprehensive Authorization
For our valued distributors, we offer complete authorization certificates, empowering you to market SANZHI brand products with utmost confidence. Utilize our brand's strength to enhance your sales and credibility.
Sanzhi (Henan) Compressor Co., Ltd. is a distinguished leader in the manufacturing industry, celebrated for its superior screw air compressors and vacuum pumps. With over ten years of unwavering commitment, we present a diverse portfolio that includes standard and low-pressure screw air compressors, advanced permanent magnet frequency conversion models, two-stage compression units, laser cutting-specific compressors, and highly adaptable mobile screw compressors. Available in single and double-tank configurations, our compressors come in both electric and diesel versions, enhanced by our pioneering screw vacuum pumps.
Our production processes represent the pinnacle of efficiency and modernity, boasting cutting-edge multi-air compressor assembly lines. Backed by a proficient team of more than 50 employees, we continuously refine our ERP-driven management systems, substantially reducing lead times to guarantee prompt delivery of top-tier products.
Upholding the highest standards, our factory is proudly ISO9001-certified, reflecting our steadfast commitment to quality management. We rigorously implement comprehensive quality control measures, ensuring each machine undergoes exhaustive material inspections, production evaluations, and thorough pre-delivery checks before it exits our facility.
Our unparalleled customer service ethos sets us apart. Our pre-sales team offers expert guidance to help you choose the perfect air equipment, with extensive customization options for appearance and configuration. We excel in crafting bespoke OEM products tailored to specific dealer requirements. Our after-sales team, comprising seasoned professionals, ensures rapid and effective responses to all customer inquiries and needs.
At Sanzhi (Henan) Compressor Co., Ltd., our mission is to deliver high-performance, reliable products that build lasting customer relationships. Our efficient delivery schedules, exceptional machines, and competitive pricing guarantee unparalleled compressed air solutions every time.
Ideally located in Xinzheng City, Henan Province, China, our factory offers convenient access. We provide complimentary transportation from Xinzheng International Airport to our premises, a short 30-kilometer journey that takes approximately one hour. We extend a warm welcome for you to visit us!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a dedicated manufacturer specializing in screw air compressors, with over a decade of professional experience.
Q2. How do you control quality?
A: 1. Stringent inspection of raw materials.
2. Rigorous control of installation procedures.
3. Each machine undergoes a minimum of 5 hours of continuous testing before dispatch.
Q3. What information must I provide to get the suitable machine?
1. The required air delivery capacity (Unit: CFM or m³/Min).
2. The necessary working pressure (Unit: PSI, Bar, or Mpa).
3. The voltage and frequency of your location (V/Hz).
4. Any additional accessories required, such as an air tank, filters, or air dryers.
Provide us with these details, and we will tailor a solution for you!
Q4. What is the general unit conversion?
1Bar = 0.1Mpa = 14.5PSI
1m³/min = 35.32cfm
1KW = 1.34HP
Q5. What is the available voltage for air compressors?
A: Sanzhi offers compressors in voltages of 380V/50Hz/3P, 400V/50Hz/3P, 415V/50Hz/3P, 220V/60Hz/3P, 440V/60Hz/3P, and can customize according to your requirements.
Q6. How long is the delivery time?
A: For standard voltage specifications, we ensure swift delivery with a lead time of just 15 working days post order confirmation. Should you require custom, non-standard voltage specifications, please connect with our sales team for precise, tailored delivery timelines that meet your unique requirements.
Q7. What's the payment term?
A: To facilitate a seamless transaction experience, our payment terms are structured as follows: a 30% T/T deposit is required at the outset, followed by 40% T/T prior to shipment, and the remaining 30% T/T upon receipt of the B/L copy. We accept payments in both USD and RMB to accommodate your preferences.
Q8: How about your warranty?
A: Our comprehensive warranty program offers a one-year warranty for the entire machine and an extended two-year warranty specifically for the screw air compressor, ensuring coverage for non-consumable components.
Q9: What about the maintenance?
A: We recommend an initial maintenance check-up after the first 500 operating hours. Following this, regular maintenance should be carried out every 2000-3000 hours, based on specific working conditions to sustain optimal performance.
Q10: Can machines be run in high-temperature environments?
A: Certainly, our machines are meticulously engineered to maintain peak performance in high-temperature environments, functioning efficiently within a temperature range of -20° to 45° (-4ºF to 113ºF).
Q11: Do you offer OEM service?
A: Yes, we proudly offer comprehensive OEM and ODM services. Our dedicated design team is committed to providing innovative and flexible solutions to precisely meet your unique specifications.
Q12: How long could your air compressor be used?
A: Engineered for exceptional durability, our air compressors boast a remarkable lifespan exceeding 10 years, ensuring long-term reliability and peace of mind.
Q13: Will you provide some spare parts for the machines?
A: Absolutely, we ensure the availability of spare parts for all our machinery, guaranteeing you have the essential components for efficient maintenance and timely repairs.
Q14: How about your after-sales service?
A: Our extensive after-sales service includes comprehensive online guidance for installation and commissioning. For added convenience, we can also dispatch engineers for on-site training and installation support, ensuring seamless and efficient operation from day one.
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