Magnetic Coupler & Drive Couplings Supplier

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Free design, technical support

Quality assurance, one year warranty

What is magnetic coupler ?

How magnetic coupler work?

Application of magnetic coupler

Typical applications: Gear pumps, centrifugal pumps, screw spindle pumps, agitators, PU foaming lines.

The magnetic coupler parameter

Example: XC40-I6-E8-NS-80-SF

 XC40  -  I6  -  E8  -  NS  -  80  -  SF
   |       |     |      |      |       |
 Model    IB    EB   Shroud  Temp.  Material

• XC40: Magnetic coupling model designation (External rotor outer diameter ED = 40mm).
• I6: Internal rotor shaft bore (IB) = 6mm.
• E8: External rotor drive bore (EB) = 8mm.
• NS: Isolation containment shroud configuration code.
• 80: Maximum continuous operating temperature = 80°C (176°F).
• SF: Material configuration and encapsulation code.

Code	Configuration	Technical Definition
WO	With Shroud & O-ring	Integrated hermetic containment shroud; static sealing between the shroud boundary and housing is secured via an elastomer O-ring.
WS	With Shroud / Standard	Standard magnetic coupling shroud configuration; utilizes metal-to-metal face sealing, custom gaskets, or a fully welded hermetic design without O-rings.
NS	No Shroud / Without Shroud	Containment shroud is completely excluded from this specific industrial coupling assembly.

• SD (Standard Design)
  • Technical Specifications: Stainless steel internal rotor assembly; high-tensile C45 / AISI 1045 carbon steel external rotor equipped with an electroless nickel plated (ENP) surface finish for optimal corrosion resistance.
  • Applications: Standard industrial pump and machinery environments; engineered for cost-effective torque transmission.
• SF (AISI 304 Full Encapsulation)
  • Technical Specifications: All fluid wet-end components and external boundaries, including full hermetic encapsulation of inner and outer permanent magnetic surfaces, are sealed via AISI 304 / SUS304 stainless steel.
  • Applications: High moisture, chemical splashing, and routine washdown environments; ideal for food, beverage, and cleanroom applications.
• LF (AISI 316L Full Encapsulation)
  • Technical Specifications: High-end magnetic drive boundaries feature full hermetic encapsulation of inner and outer rotor cores in marine-grade, ultra-low-carbon AISI 316L / SUS316L stainless steel.
  • Applications: Severe corrosive environments; optimized for direct exposure to sea water (marine engineering), industrial acids, alkalis, and heavy salt spray.

Magnet Type	Suffix / Material Grade	Max. Working Temp.	Selection Guide
- / N	Standard (No Suffix)	80°C (176°F)	Baseline Neodymium magnet grade; specified for ambient-temperature magnetic drive operations.
NdFeB	M	100°C (212°F)	Standard industrial NdFeB grade for systems with minor thermal elevation.
NdFeB	H	120°C (248°F)	Heavy-duty synchronous magnetic coupling operations with stable magnetic flux retention.
NdFeB	SH	150°C (302°F)	Engineered for process lines with heat accumulation or hot water circulation loops.
NdFeB	UH	180°C (356°F)	High-coercivity grade; engineered to resist thermal demagnetization caused by shroud eddy currents.
NdFeB	EH	200°C (392°F)	For extreme industrial processing conditions near the thermal limit of Neodymium material.
NdFeB	AH	220°C (428°F)	Specialized custom NdFeB magnetic rotor grade for specialized aerospace or industrial configurations.
NdFeB	TH	240°C (464°F)	Absolute theoretical thermal threshold for high-performance NdFeB permanent magnetic couplings.
SmCo	SmCo 1:5	250°C (482°F)	High-stability Samarium Cobalt rare-earth magnet; features superior oxidation and chemical resistance compared to NdFeB.
SmCo	SmCo 2:17 (High-Temp)	290°C - 300°C (554°F - 572°F)	Mandatory for ultra-high-temperature magnetic transmissions. Required when process design temperatures exceed 240°C (464°F). Utilizes specialized high-temp grades (e.g., YXG-28/30 or SmCo28/30).

Safety Margin Note:
During high-speed synchronous operation, metallic containment shrouds cut magnetic field lines, generating eddy current losses (thermal accumulation). This phenomena causes the internal rotor temperature to exceed the process fluid temperature. If the system fluid is rated at 80°C, choosing magnets rated for H (120°C) or SH (150°C) is highly recommended to maintain a safe thermal safety margin and prevent irreversible demagnetization.

• High Torque Connection: For transmission torque specifications exceeding 40 N·m, the external rotor hub must utilize a flanged connection. In this setup, dimension "C" (the spigot/register locator) on the engineering drawing must be less than or equal to the inside diameter of the external rotor.
• Screw Sizes: Column "M" specifies the standard metric thread sizing. Architecturally, internal rotors utilize smaller fastening threads, whereas external rotors and containment shrouds are engineered with larger thread sizes to sustain higher mechanical loads.
• Structural Limitation: When the outer diameter of the external rotor is less than 90mm, the internal rotor shaft bore is machined strictly as a through hole design.

SHAFT FIXING METHODS

⚠️ IMPORTANT NOTICE: Rare Earth Export Control Policy

Due to strict Chinese government controls on rare earth exports, magnetic couplings with operating temperatures exceeding 80°C must meet one of the following compliance conditions:

1. Export License Cooperation: The buyer must cooperate fully with the seller to obtain an official Export License.
2. Domestic Transaction: Alternatively, the seller can deliver the high-temperature coupling strictly to the buyer's registered branch or subsidiary office within Mainland China.

Please Note:

We cannot export high-temperature configurations under any other circumstances. Please review your compliance options before submitting an inquiry.

Magnetic disc vs co-axial coupling comparison

Magnetic disc vs co-Axial coupling comparison
Coupling style	Magnetic disc couplings ( XD )	Co-axial magnetic couplings ( XC )
Permanent-magnetic	√	√
Contactless	√	√
Maintenance-free	√	√
Torsionally flexible	√	√
Low vibrations	√	√
Material	Standard: SS304. Options: Aluminum alloy 6061,Stainless steel 316L,PVC, available)	Standard: SS304. Options: SS316/UNS S31603.
Containment shroud	None	Optional
Axial forces	High axial force which must be restrained	Coupling finds its own center with ~0 axial force
Shaft fixing method	Small size type A,  big size type B & C available	Type A or B
Slip torque adjustment	Air gap can be adjusted  to increase or decrease slip torque	Coupling hubs can be seperated axially  to decrease slip torque (axial force will result)
Angular misalignment capacity	3° Max	Ensure coupling hubs  (or barrier if used) do not contact
Parallel misalignment capacity	6.35mm (0.25in) Max	Ensure coupling hubs  (or barrier if used) do not contact
Containment barrier	Simple flat barrier	Top-hat shaped barrier
Max. pressure resistance [bar]	Up to 80 bars depending on size	Up to 90 bars depending on size
Max. temperature resistance [°C]	150/300 depending on magnet material	150/300 depending on magnet material

Please Note:

1. The magnetic coupler containment shroud is optional, we can produce it according to your drawings, the larger the order quantity, the better the discount.
2. We are the original manufacturer for magnetic coupler, we provide very flexible customizability; any grade of magnet, any material, one-year warranty, lifetime technical support.

FAQ for magnetic coupler