Magnetic Couplings

Transmitting Torque Through Air

Magnetic couplings offer a non-contact transfer of torque. They are typically used in magnetic drive pumps and magnetic mixers for seal-less applications; keeping corrosive, toxic, or flammable liquids from escaping into the atmosphere.

By driving one magnetic hub, torque is transmitted magnetically to the other magnetic hub. This can be done through the air or through a non-magnetic containment barrier such as stainless steel or fiberglass, allowing complete isolation of the inner magnetic hub from the outer magnetic hub. There are no contacting parts in magnetic drive pumps which allows for torque transmission through both angular and parallel misalignment.

Eliminates Rotating Seals
No Wearing Parts
Synchronous Design, No Slip at Any Speed
No Physical Contact Between Driving and Driven Parts
Safe For Use Up To 140° C, High-Temp Designs Available
Custom Designs Available

MTC Co-Axial Couplings

The co-axial coupling consists of three parts, the inner hub, the outer hub, and the optional containment barrier. Both the inner and outer hubs consist of a series of rare earth magnets that are ground, potted, and glued to steel hubs. The inner hub is then completely sealed in stainless steel to protect the magnets and hub from damage or corrosive substances.

These couplings are ideal for applications such as magnetic mixers, in which the “driven” hub is physically separated and sealed from the “driver” hub. Magnetic mixers are particularly well suited to applications that involve highly toxic or corrosive chemicals.

Co-axial type magnetic couplings for magnetic drive pumps and magnetic mixers

Model	Nominal Torque [in-lb]	Slip Torque [in-lb]	Product Datasheet	SolidWorks 3D Model	Step 3D Model
Model MTC-0.06	Nominal Torque [in-lb] 0.5	Slip Torque [in-lb] 1	Product Datasheet	SolidWorks 3D Model	Step 3D Model
Model MTC-0.1	Nominal Torque [in-lb] 1	Slip Torque [in-lb] 1.75	Product Datasheet	SolidWorks 3D Model	Step 3D Model
Model MTC-0.3	Nominal Torque [in-lb] 2.5	Slip Torque [in-lb] 4.5	Product Datasheet	SolidWorks 3D Model	Step 3D Model
Model MTC-1	Nominal Torque [in-lb] 9	Slip Torque [in-lb] 13	Product Datasheet	SolidWorks 3D Model	Step 3D Model
Model MTC-3	Nominal Torque [in-lb] 27	Slip Torque [in-lb] 31	Product Datasheet	SolidWorks 3D Model	Step 3D Model
Model MTC-10	Nominal Torque [in-lb] 90	Slip Torque [in-lb] 105	Product Datasheet	SolidWorks 3D Model	Step 3D Model
Model MTC-16	Nominal Torque [in-lb] 140	Slip Torque [in-lb] 230	Product Datasheet	SolidWorks 3D Model	Step 3D Model
Model MTC-22	Nominal Torque [in-lb] 200	Slip Torque [in-lb] 310	Product Datasheet	SolidWorks 3D Model	Step 3D Model
Model MTC-30	Nominal Torque [in-lb] 265	Slip Torque [in-lb] 425	Product Datasheet	SolidWorks 3D Model	Step 3D Model
Model MTC-50	Nominal Torque [in-lb] 450	Slip Torque [in-lb] 708	Product Datasheet Upon Request	SolidWorks 3D Model Upon Request	Step 3D Model Upon Request
Model MTC-65	Nominal Torque [in-lb] 575	Slip Torque [in-lb] 885	Product Datasheet Upon Request	SolidWorks 3D Model Upon Request	Step 3D Model Upon Request
Model MTC-80	Nominal Torque [in-lb] 710	Slip Torque [in-lb] 1151	Product Datasheet Upon Request	SolidWorks 3D Model Upon Request	Step 3D Model Upon Request
Model MTC-110	Nominal Torque [in-lb] 1000	Slip Torque [in-lb] 1460	Product Datasheet Upon Request	SolidWorks 3D Model Upon Request	Step 3D Model Upon Request
Model MTC-140	Nominal Torque [in-lb] 1250	Slip Torque [in-lb] 1859	Product Datasheet Upon Request	SolidWorks 3D Model Upon Request	Step 3D Model Upon Request
Model MTC-180	Nominal Torque [in-lb] 1600	Slip Torque [in-lb] 2567	Product Datasheet Upon Request	SolidWorks 3D Model Upon Request	Step 3D Model Upon Request
Model MTC-220	Nominal Torque [in-lb] 2000	Slip Torque [in-lb] 2921	Product Datasheet Upon Request	SolidWorks 3D Model Upon Request	Step 3D Model Upon Request
Model MTC-280	Nominal Torque [in-lb] 2500	Slip Torque [in-lb] 3363	Product Datasheet Upon Request	SolidWorks 3D Model Upon Request	Step 3D Model Upon Request
Model Looking to Replace a Competitors Coupling? See our Coupling Interchange

Containment Barriers

Model	SolidWorks 3D Model	Step 3D Model
Model MTC-0.06-SB / MTC-0.1-SB	SolidWorks 3D Model	Step 3D Model
Model MTC-0.3-SB	SolidWorks 3D Model	Step 3D Model
Model MTC-1-SB	SolidWorks 3D Model	Step 3D Model
Model MTC-3-SB	SolidWorks 3D Model	Step 3D Model
Model MTC-10-SB	SolidWorks 3D Model	Step 3D Model
Model MTC-0.1-SB through MTC-10-SB containment barriers are made from 316 stainless, and are rated to a minimum of 450 psi. Containment shells for other sizes are made to order and are rated according to customer requirements.

MTD Disc Couplings

Disc type magnetic couplings consist of two opposing discs with powerful rare earth magnets. The torque applied to one disc is transferred through an air gap to the other disc. Because of its simple flat design, you can have angular misalignment of up to 3º or parallel misalignment up to ¼” and still transmit nearly full rotational torque. You could also fabricate an inexpensive flat barrier to separate the atmospheres or fluids surrounding the two discs. This is our simplest and most versatile coupling.

Typical applications include magnetic mixers and magnetic drive pumps.

Disc type magnetic couplings for magnetic drive pumps and magnetic mixers

Model	Nominal Torque [in-lb]	Product Datasheet Standard 316 SS		SOLIDWORKS 3D MODEL Standard 316 SS	Step 3D MODEL Standard 316 SS
Model MTD-0.2	Nominal Torque [in-lb] 1	Product Datasheet Standard 316 SS	SOLIDWORKS 3D MODEL Standard 316 SS	Step 3D MODEL Standard 316 SS
Model MTD-0.3	Nominal Torque [in-lb] 4	Product Datasheet Standard 316 SS	SOLIDWORKS 3D MODEL Standard 316 SS	Step 3D MODEL Standard 316 SS
Model MTD-0.6	Nominal Torque [in-lb] 6	Product Datasheet Standard 316 SS	SOLIDWORKS 3D MODEL Standard 316 SS	Step 3D MODEL Standard 316 SS
Model MTD-1	Nominal Torque [in-lb] 9	Product Datasheet Standard 316 SS	SOLIDWORKS 3D MODEL Standard 316 SS	Step 3D MODEL Standard 316 SS
Model MTD-2	Nominal Torque [in-lb] 15	Product Datasheet Standard 316 SS	SOLIDWORKS 3D MODEL Standard 316 SS	Step 3D MODEL Standard 316 SS
Model MTD-5	Nominal Torque [in-lb] 44	Product Datasheet Standard 316 SS	SOLIDWORKS 3D MODEL Standard 316 SS	Step 3D MODEL Standard 316 SS
Model MTD-8	Nominal Torque [in-lb] 72	Product Datasheet Standard 316 SS	SOLIDWORKS 3D MODEL Standard 316 SS	Step 3D MODEL Standard 316 SS
Model MTD-12	Nominal Torque [in-lb] 108	Product Datasheet Standard 316 SS	SOLIDWORKS 3D MODEL Standard 316 SS	Step 3D MODEL Standard 316 SS
Model MTD-20	Nominal Torque [in-lb] 181	Product Datasheet Standard 316 SS	SOLIDWORKS 3D MODEL Standard 316 SS	Step 3D MODEL Standard 316 SS
Model MTD-30	Nominal Torque [in-lb] 270	Product Datasheet Standard 316 SS		SOLIDWORKS 3D MODEL Standard 316 SS	Step 3D MODEL Standard 316 SS
Model MTD-40	Nominal Torque [in-lb] 360	Product Datasheet Standard 316 SS		SOLIDWORKS 3D MODEL Standard 316 SS	Step 3D MODEL Standard 316 SS
Model MTD-50	Nominal Torque [in-lb] 470	Product Datasheet Standard 316 SS		SOLIDWORKS 3D MODEL Standard 316 SS	Step 3D MODEL Standard 316 SS

Disc vs.Co-Axial Coupling Comparison
Disc vs.Co-Axial Coupling Comparison Coupling Style	Disc (MTD)	Co-Axial (MTC)
Disc vs.Co-Axial Coupling Comparison Axial Forces	High axial force which must be restrained	Coupling finds its own center with ~0 axial force
Disc vs.Co-Axial Coupling Comparison Slip Torque Adjustment	Air gap can be adjusted to increase or decrease slip torque	Coupling hubs can be separated axially to decrease slip torque (axial force will result)
Disc vs.Co-Axial Coupling Comparison Angular Misalignment Capacity	3° Max	Ensure coupling hubs (or barrier if used) do not contact
Disc vs.Co-Axial Coupling Comparison Parallel Misalignment Capacity	0.25\” Max	Ensure coupling hubs (or barrier if used) do not contact
Disc vs.Co-Axial Coupling Comparison Containment Barrier	Simple flat barrier	“Top-hat” shaped barrier
Disc vs.Co-Axial Coupling Comparison Maximum Torque	Designs available up to ~45 ft-lb	Designs available up to ~300 ft-lb
Disc vs.Co-Axial Coupling Comparison Maximum Operating Temperature	140°C (Custom high-temp designs available)	140°C (Custom high-temp designs available)

Magnetic Couplings

Transmitting Torque Through Air

MTC Co-Axial Couplings

Containment Barriers

MTD Disc Couplings

Coupling Style

Axial Forces

Slip Torque Adjustment

Angular Misalignment Capacity

Parallel Misalignment Capacity

Containment Barrier

Maximum Torque

Maximum Operating Temperature