Jiangsu Haifa Machinery Manufacturing Co., Ltd.

As the petrochemical, coal chemical, new energy, and electronic chemicals industries continue to demand higher equipment reliability, traditional mechanical seals and rolling bearings are gradually becoming critical factors affecting continuous operation. In recent years, the development of API685 magnetic drive technology, active magnetic bearings (AMB), and-speed permanent magnet motors has provided new technical directions for high-pressure, high-head centrifugal pumps. Jiangsu Haifa Machinery Manufacturing Co., Ltd. continues to conduct R&D on API610 and API685 products, while focusing on the development of leak-free, low-friction, and high-reliability fluid transfer technologies.

Technical Advantages of API and Magnetic Suspension Motors  API685 magnetic drive pumps transmit torque through a permanent magnet coupling, eliminating mechanical seals and achieving zero media leakage. Magnetic suspension motors use magnetic fields to replace traditional rolling bearings, allowing the rotor to operate mechanical contact. The integration of these two technologies can further reduce friction losses, minimize vibration, enhance high-speed operational stability, and effectively lower maintenance costs, offering new solutions for the future of high-end process industries.Working Principle of Magneticension Motor-Driven High-Speed Centrifugal Pumps  The magnetic suspension motor primarily involves three operational processes:   ①Magnetic Suspension – Active magnetic bearings combined with displacement sensors digital control systems, adjust electromagnetic coil current in real time to keep the impeller stably suspended, eliminating the need for traditional rolling bearings.   ② Magnetic Field Drive – A high-speed permanent magnet motor generates a rotating magnetic, which interacts with rotor's permanent magnets to produce driving force, enabling contactless high-speed rotation.   ③ Fluid Transfer – As the impeller rotates at high speed, the fluid gains energy under centrifugal force, and the volute converts kinetic energy into pressure energy, achieving stable pressurized transfer.   Throughout the entire operation, traditional mechanical bearings and shaft seals are eliminated, resulting in no friction, no wear, no leakage, high efficiency, low vibration, and low maintenance. This makes it suitable for applications in electronic chemicals,opharmaceuticals, LNG, semiconductors, and high-purity media transfer.Typical Technical Parameters ofsu Haifa API610  | Parameter | Specification |   |-----------|---------------|   | Product | API610 12th Edition |   | Pump Types | OH2, BB2, BB4, VS Series |   | Flow Range | 2–5000 m³/h |   | Head Range | 10–3500 m |   | Pressure | ≤35 MPa |   | Media Temperature | -196°C to 450°C |   | Materials | ASTM A, 316L, 2205, 250, Hastelloy etc. |   | Application Industries | Refining, Coal Chemicals, LNG, New Energy, Power, Fine Chemicals |Future Technical Development Directions  , API610 high-pressure, high-head process pumps still primarily use rolling or sliding bearings, while magnetic suspension motors are mainly applied in high-speed blowers, compressors, and some high-speed centrifugal pumps. As active magnetic bearings, high-speed permanent magnet motors, intelligent control technologies continue to mature, the integrated application of API685 magnetic drive and suspension support is expected to become a key development direction for high-reliability chemical pumps in the future, providing process industries with fluid transfer solutions that offer higher efficiency, lower energy consumption, and longer service life.Image  Jiangsu Haifa API610/API685 High-Efficiency Magnetic Suspension Chemical Pump Assembly SiteReferences  

1. 

   API Standard 610 Centrifugal Pumps for Petroleum, Petrochemical and Natural Industries

2. API Standard 685 Sealless Centrifugal Pumps

3. ISO 14839 *Rotordynamic Evaluation Criteria for Magnetic Bearing Systems

4. Schweitzer G., Maslen E.H.Magnetic Bearings: Theory, Design and Application*

FAQQ1: Is an API685 magnetic drive pump the same as a magnetic suspension pump?No. API685 uses a magnetic coupling to transmit torque, mechanical seals. Magnetic suspension motors use active magnetic bearings to support the. These are different technologies, though they can be in certain high-end equipment.Q2: Is magnetic suspension technology suitable for all API610 chemical pumps?   Currently, it is not suitable for all operating conditions For conventional OH2, BB2, BB4, and other medium-to-low-speed process pumps traditional bearings remain a mature and reliable solution Magnetic suspension technology is more applicable to high-speed, high-cleanliness, and high-reliability special applications. As the technology evolves, its scope of application is expected to gradually expand.