Axial Magnetic Coupling

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WHAT IS A MAGNETIC COUPLING?

HOW DOES A MAGNETIC COUPLING WORK?

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

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

• XC40: Model number (External rotor outer diameter: 40mm).
• I6: Internal rotor bore (IB) = 6mm.
• E8: External rotor bore (EB) = 8mm.
• NS: Containment shroud option code.
• 80: Maximum continuous working temperature = 80°C (176°F).
• SF: Material configuration code.

Code	Configuration	Technical Definition
WO	With Shroud & O-ring	Includes containment shroud; static sealing between the shroud and the pump body/housing is secured via an elastomer O-ring.
WS	With Shroud / Standard	Includes containment shroud; features metal-to-metal face sealing, gasket sealing, or an all-welded hermetic design without O-rings.
NS	No Shroud / Without Shroud	Shroud is excluded from this configuration.

• SD (Standard Design)
  • Technical Specifications: Stainless steel internal rotor; high-tensile C45 / AISI 1045 carbon steel external rotor with an electroless nickel plated (ENP) surface finish for corrosion protection.
  • Applications: Standard industrial environments; optimal cost-to-performance ratio.
• SF (AISI 304 Full Encapsulation)
  • Technical Specifications: All wet-end and external boundaries (including full encapsulation of inner and outer rotor surfaces) are hermetically sealed in AISI 304 / SUS304 stainless steel.
  • Applications: High moisture and washdown resistance; ideal for humid environments, water splashing, or high-pressure cleaning cycles.
• LF (AISI 316L Full Encapsulation)
  • Technical Specifications: All boundary components (including full encapsulation of inner and outer rotor surfaces) are hermetically sealed in marine-grade AISI 316L / SUS316L ultra-low-carbon stainless steel.
  • Applications: Engineered for highly corrosive environments; direct exposure to sea water (marine environments), high salt spray, or aggressive acids/alkalis.

Magnet Type	Suffix / Material Grade	Max. Working Temp.	Selection Guide
- / N	Standard (No Suffix)	80°C (176°F)	Baseline standard model; suitable for ambient-temperature operations.
NdFeB	M	100°C (212°F)	For standard industrial applications with minor thermal elevation.
NdFeB	H	120°C (248°F)	Heavy-duty industrial grade; provides stable performance.
NdFeB	SH	150°C (302°F)	For systems with heat accumulation or hot water circulation loops.
NdFeB	UH	180°C (356°F)	High-performance grade; resists thermal demagnetization from shroud eddy currents.
NdFeB	EH	200°C (392°F)	For extreme conditions; approaches the thermal limitation of NdFeB.
NdFeB	AH	220°C (428°F)	Specialized custom grade; rarely utilized in standard industrial settings.
NdFeB	TH	240°C (464°F)	Absolute theoretical temperature threshold for NdFeB materials.
SmCo	SmCo 1:5	250°C (482°F)	High-stability rare-earth magnet; superior oxidation and corrosion resistance compared to NdFeB.
SmCo	SmCo 2:17 (High-Temp)	290°C - 300°C (554°F - 572°F)	Mandatory for ultra-high-temperature processes. Required when system design temperatures exceed 240°C (464°F). Features specialized high-temp grades (e.g., YXG-28/30 or SmCo28/30).

⚠️ 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.

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

• High Torque Connection: For transmission torques exceeding 40 N·m, the external rotor must utilize a flanged connection. In this configuration, dimension "C" (the spigot/register locator dimension) on the drawing must be less than or equal to the inside diameter of the external rotor.
• Screw Sizes: Column "M" specifies the screw thread sizing. Architecturally, internal rotors utilize smaller fastening threads, whereas external rotors and containment shrouds are specified with larger thread sizes to meet structural load requirements.
• Structural Limitation: When the outer diameter of the external rotor is less than 90mm, the internal rotor shaft bore is executed strictly as a through hole design.

SHAFT FIXING METHODS