Magnetic Coupling

Magnetic coupling is a new kind of coupling,which connects motor and machine by permanent magnetic force.They work in the sealless magnetic drive pumps,which transporting volatile,flammable,explosive and toxic solutions with no leakage. The appearance of Magnetic coupling solved thoroughly the leak problems existed in dynamic sealing of certain mechanical devices.Magneic coupling are widely used in various industries and fields,such as chemical,papermaking,foodstuff, pharmacy,etc.


A magnetic coupling is a device that is capable of transmitting force through space without physical contact. Attractive and repulsive magnetic forces are harnessed to perform work in either a linear or rotary fashion. In its simplest form, a magnetic coupling is comprised of two components: a driver and a follower.

magnetic-couplingThe driver is the portion of the mechanism connected to the prime mover (motor). Through magnetic interaction, the follower reacts to the motion of the driver, resulting in a non-contact transmission of mechanical energy. This non-contact power transmission has multiple benefits, including but not limited to:

1. Isolation of components

o minimizes or eliminates mechanical vibrations through magnetic damping
o allows for the insertion of a mechanical barrier between the driver and follower to separate environments and allow operation under pressure differentials

2. Highly tolerant of misalignment between the prime mover and load

o Axial
o Radial
o Angular

magnetic-couplingsAccording to the type of holes installed in the classification, can be divided into the following:

o Unthreaded Hole Type
o Axel Hole Type
o Flange Type

3. Speed variation and regulation between prime mover and load

a. Classifications of Magnetic Couplings:
Three classifications of magnetic couplings are available, depending on the intended use of the device:
Class 1 – Synchronous
Class 2 – Eddy Current
Class 3 – Hysteresis

b. Magnetic couplings are capable of transmitting forces both linearly and rotationally. Consequently, in addition to selecting the Class of coupling required (synchronous, eddy current, or hysteresis), the coupling type also needs to be specified. Two Types of couplings exist:
• Type 1 – Torque
• Type 2 – Linear



As their names imply, torque couplings (Type I) are used to transmit forces rotationally while linear couplings (Type II) are used to transmit forces linearly. As one might expect, each coupling Type also has a variety of geometric topologies that can be utilized to meet the design intent. The details of these configurations are found below.

FAQ-Help me designs

1. What type of coupling is required?
1. Linear
2. Torque
2. What topology are you considering?
1. Face-to-face (torque coupling)
2. Coaxial (torque coupling)
3. Tubular (linear coupling)
4. Planar (linear coupling)
3. How much force or torque would you like to transmit?
4. What Class of coupling are you considering?
1. Class I – Synchronous
2. Class II – Eddy Current
3. Class III – Hysteresis
5. What speed will the coupling be traveling? (velocity or RPM)
6. Is a barrier between the driver and follower required? If so, what pressure differential would you like the design to accommodate?
7. Across what temperature range will this coupling operate?
8. Are there corrosive elements or fluids that need to be taken into consideration? If so, what type are they?
9. Geometric requirements:
1. Driver
a. Shaft size
b. Mounting type
b1. Set screw and key
b2. Compression (threaded shaft end)
b3. Taper Lock (not available on all sizes)
c. Max. OD
d. Max. Length
2. Follower
a. Shaft size
b. Mounting Type
b1. Set Screw and key
b2. Compression (threaded shaft end)
b3. Taper Lock (not available on all sizes)
3. Max. Length
10. Bearing support (radial and axial) is typically provided outside of the coupling system, but can be accommodated in the design. Does bearing support need to be designed into the coupling?
11. Is dynamic balancing required (for rotary systems)?

Magnetic coupling is consist of external rotor,internal rotor and isolating cover. we can design and produce different Magnetic couplings according to customer’s requests.

Keywords: Magnetic Coupling, Permanent Magnetic Coupling, Magnetic Coupling for Hydraulic Pump, Magnetic Motor Coupling, Magnetic Couplings for Magnetic Drive Pump, Reliable Magnetic Coupling, Magnetic Pump Coupling


linear magnetic couplings

Linear Magnetic Couplings

Linear Magnetic Couplings, Linear Magnetic Couplers, Permanent Magnet Linear Couplings, Synchronous Magnetic Linear Couplers, Tubular Magnetic Coupling, Planar Magnetic Coupling Linear Magnetic Couplings are simpler compared with torque couplers. It can be two magnets or comprised of engineered arrays containing multiple magnets of various configurations. The required coupling force and the operating environment are the prime design […]

torque magnetic couplings

Torque Magnetic Couplings

Torque Magnetic Couplings, Torque Magnetic Couplers, Permanent Magnet Torque Couplings, Synchronous Magnetic Torque Couplers, Coaxial Torque Magnetic Coupling, Face to Face Torque Magnetic Coupling Torque Magnetic Couplings Part No.:  HSTQMC Material: NdFeB, SmCo, AlNiCo Shape: Custom Dimension: Custom Grade: Custom Coaxial – these types of magnetic couplings are configured so that one member of the coupling is fully nested within the ID of […]

permanent magnetic couplings

Permanent Magnetic Couplings

Permanent Magnetic Couplings, Permanent Magnet Couplings for Pump, Rare Earth Permanent Magnetic Coupling, Torque Magnetic Coupling, Linear Magnetic Couplings, Coaxial, Face to Face, Tubular, Planar Permanent magnetic couplings offer an efficient, leak-proof, cost effective, and more reliable alternative to various conventional sealing methods. Permanent magnet couplings made from rare‐earth materials such as NdFeB render substantial torque, and are used in numerous applications that cannot […]

hysteresis magnetic coupling

Hysteresis Magnetic Coupling

Hysteresis Magnetic Coupling, Permanent Magnetic Couplings, Hysterisis Face to Face Coupling, Hysterisis Linear Coaxial Coupling, Hysterisis Linear Planar Coupling Side by Side, Magnetic Hysterisis Coaxial Coupling Hysteresis Magnetic Coupling – As a hybrid of the Class 1 and Class 2 technologies, this coupling is typically used in an asynchronous fashion as a force limiter, but can be utilized in […]

Eddy Current Magnetic Coupling

Eddy Current Magnetic Coupling

Eddy Current Magnetic Coupling, Asynchronous Magnetic Coupling, Eddy Current Linear Planar Coupling Side by Side, Magnetic Eddy Current Coupling Face to Face, Eddy Current Linea Coaxial Magnetic Coupling, Permanent Magnetic Coupling Drive Manufacturer Eddy Current Magnetic Coupling – This coupling is an asynchronous version that relies on a speed mismatch between the driver and follower to produce a force. An array […]

synchronous magnetic coupling

Synchronous Magnetic Coupling

Synchronous Magnetic Coupling, Magnetic Synchronous Coupling, Permanent Magnetic Couplings, Synchronous Magnetic Clutches, Syncronous Coaxial Coupling, Permanent Magnet Synchronous Couplings Pump, Face to Face Coupling, Synchronous Magnetic Coupling – Provide synchronous connection to transmit torque and speed for all manufacturing applications. Available in shaft-to-shaft, disk or shaft-flange styles, these clutches transmit force with no physical contact. They are even capable […]


Magnetic Coupling – Cooling Unit

Cooling Unit Disc Magnetic Coupling, Torque Magnetic Couplings, Linear Magnetic Couplings, Magnetic Coupling System, Disc Magnetic Coupling Cooling unit is alternate parts.It is suggested to use under the condition of high running speed. Cooling Unit Type of magnetic coupling Type 1 –  Torque    /   Type 2 –  Linear As their names imply, torque […]


Magnetic Coupling – Flange Type

Magnetic Coupling Flange Type, Permanent Motor Magnetic Coupling, Magnetic Couplings Solution for PM Motor & Rotor, Custom Magnetic Couplings Magnetic Coupling are employed in seal-less, leak-free magnetic drive pumps used to handle volatile, flammable, corrosive, abrasive, toxic or foul smelling liquids. The inner and outer magnet rings are fitted with permanent magnets, hermetically sealed from […]


Magnetic Coupling – Axel Hole Type

Axel Hole Type Magnetic Coupling, Rare Earth Permanent Magnetic Couplings, Permanent Motor Magnetic Coupling, Neodymium Magnetic Couplings,  Magnetic Assemblies Magnetic Coupling – HangSeng Magnetech Co. is a specialist in the production of permanent magnetic couplings in corrosion-resistant materials. We focus on being able to provide maintenance-free solutions. HangSeng Magnetech Magnetic couplings are high-quality products with […]


Magnetic Couplings – Unthreaded Hole Type

Unthreaded Hole Type Magnetic Couplings, Motor Permanent Magnetic Couplings, Magnetic Coupling for Hydraulic Pump, Magnetic Assemblies Coupling, Magnetic Rotor Coupling Magnetic Couplings are a means of transferring torque from one shaft to another without a physical mechanical connection. Magnetic shaft couplings are most often used for liquid pumps and propeller systems, since a static, physical barrier can […]