Magnetic Disc Couplings

misalign-para
Note: Disc Type Couplings are sold as hub halves; weight per hub includes magnets.

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

Simple Concept: Opposite Poles Attract.

This attraction is how we transmit torque from one magnetic hub to another. 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.

How Disc Couplings Work

Disc type 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.

Advantages of Disc Type Couplingsmtd_disc_coup-300

  • No Wearing Parts
  • Synchronous Design, No Slip at Any Speed
  • No Physical Contact Between Driving and Driven Parts
  • Simplifies Containment Barrier
  • Custom Designs Available

 

Specifications in English measure
(Click here for Metric)

Part
Number
HP@
1750 RPM
Max
Speed
Weight
per hub
Torque
NORMAL
Torque
PEAK
A B C
(MAX)
D E G H CUT
SHEET
.pdf
SOLID
MODEL
.SLDPRT
.STEP
lb in.lbs in.lbs inch inch inch inch inch inch inch pdf click here step-2964
MTD-0.2 0.03 42500 0.11 1 1.4 1.06 0.81 See
Chart
for
these
sizes.
0.63 0.63 0.125 N/A
MTD-0.3 0.08 26000 0.22 4 5 1.72 0.81 0.59 0.59 0.19 N/A
MTD-0.6 0.17 23000 0.32 6 8 1.98 1.12 0.59 0.59 0.19 N/A
MTD-1 0.25 19000 0.58 9 12 2.36 1.50 0.75 0.75 0.19 N/A
MTD-2 0.45 15500 1.27 15 20 2.86 2.00 1.00 1.00 0.19 N/A
MTD-5 1.22 11700 2.20 44 48 3.84 2.75 1.375 1.00 1.00 0.19 N/A
MTD-8 2.00 10500 2.55 72 80 4.20 2.75 1.375 1.00 1.00 0.25 N/A
MTD-12 3.00 9000 4.39 108 120 5.10 3.00 1.625 1.50 1.25 0.25 2.06
MTD-20 5.00 9200 4.79 180 200 4.92 2.75 1.625 1.50 1.25 0.25 2.06
MTD-30 7.50 9200 6.92 270 300 4.92 4.25 2.125 1.87 1.63 0.25 2.69
MTD-40 10.00 7800 8.97 360 400 5.79 4.25 2.375 2.07 1.81 0.25 3.06
MTD-50 13.00 7800 7.12 470 540 5.79 2.37 1.500 1.64 1.25 0.25 1.88

solidworks-logo

Bore Code Chart in English measure
(Click here for Metric)
Bore Code 0000 0125 0188 0250 0313 0375 0500 0625 0750 0875 01000 01125
Size SOLID 1/8 3/16 1/4 5/16 3/8 1/2 5/8 3/4 7/8 1 1-1/8
MTD-0.2 X X X X X
MTD-0.3 X X X X X
MTD-0.6 X X X X X
MTD-1 X X X X X
MTD-2 X X X X X X
MTD-5 X X X X X

Note:

Stock sizes (MTD-0.2 through MTD-5) are kept on the shelf.
Larger units are made to order. Please call the factory for bore codes and availability of larger units.

Technical Data
Material
400 Series Stainless Steel
Magnet (Nickel-Plated)
NdFeB*
Operating Temp*
140C
*Note:
Disc couplings are also available with SmCo magnets, rated up to 280C (536F)