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        Magnetic Couplings
        Magnetic Couplings

        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

        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 ?” 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

        Disc type magnetic couplings for magnetic drive pumps and magnetic mixers

        Model
        Nominal Torque [IN-LB]
        Product Datasheet
        Solidworks 3D Model
        Step 3D Model
        MTD-0.2
        1
        MTD-0.3
        4
        MTD-0.6
        6
        MTD-1
        9
        MTD-2
        15
        MTD-5
        44
        MTD-8
        72
        MTD-12
        108
        MTD-20
        181
        MTD-30
        270
        MTD-40
        360
        MTD-50
        470

        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.

        coupling sec 1
        Model
        Nominal Torque [IN-LB]
        Product Datasheet
        Solidworks 3D Model
        Step 3D Model
        MTC-0.06
        0.5
        Upon Request
        Upon Request
        MTC-0.1
        1
        Upon Request
        Upon Request
        MTC-0.3
        3
        Upon Request
        Upon Request
        MTC-1
        9
        MTC-3
        27
        MTC-10
        90
        MTC-16
        140
        Upon Request
        MTC-22
        200
        Upon Request
        Upon Request
        Upon Request
        MTC-30
        265
        Upon Request
        Upon Request
        Upon Request
        MTC-50
        450
        Upon Request
        Upon Request
        Upon Request
        MTC-65
        575
        Upon Request
        Upon Request
        Upon Request
        MTC-80
        710
        Upon Request
        Upon Request
        Upon Request
        MTC-110
        1000
        Upon Request
        Upon Request
        Upon Request
        MTC-140
        1250
        Upon Request
        Upon Request
        Upon Request
        MTC-180
        1600
        Upon Request
        Upon Request
        Upon Request
        MTC-220
        2000
        Upon Request
        Upon Request
        Upon Request
        MTC-280
        2500
        Upon Request
        Upon Request
        Upon Request
        Containment Barriers
        Model
        Product Datasheet
        Solidworks 3D Model
        Step 3D Model
        MTC-0.1-SB
        Upon Request
        Upon Request
        Upon Request
        MTC-0.3-SB
        Upon Request
        Upon Request
        Upon Request
        MTC-1-SB
        Upon Request
        Upon Request
        Upon Request
        MTC-3-SB
        Upon Request
        Upon Request
        Upon Request
        MTC-10-SB
        Upon Request
        Upon Request
        Upon Request
        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.
        Disc vs. Co-Axial
        Coupling Comparison
        Coupling Image 2 Crop
        coupling sec 1
        Coupling Style
        Disc (MTD)
        Co-Axial (MTC)
        Axial Forces
        High axial force which must be restrained
        Coupling finds its own center with ~0 axial force
        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
        0.25" Max
        Ensure coupling hubs (or barrier if used) do not contact
        Containment Barrier
        Simple flat barrier
        Top-hat shaped barrier
        Maximum Torque
        Designs available up to ~45 ft-lb
        Designs available up to ~300 ft-lb
        Maximum Operating Temperature
        140°C
        (Custom high-temp designs available)
        140°C
        (Custom high-temp designs available)
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