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What is magnetic coupling pump ?
The magnetic coupling pump transmit the torque without contact through magnetic forces between the internal and external rotor. They ensure hermetic separation between driving and driven side in pumps and agitators sealing hazardous liquids and gases reliably.
The magnetic coupling pump consists of an external and an internal rotor. The external rotor has got high-quality, permanent magnets of changing polarity on the inner side while the internal rotor has got them on the outside.The external rotor is usually fixed on the drive side and the magnets are glued in the keyways. The magnets of the internal rotor on the driven side are fully encapsulated.
How magnetic coupling pump work?
The magnetic coupling pump consists of three parts. The external rotor consists of a series of rare earth magnets that are ground, potted and attached to the inside diameter of a steel hub. The Internal rotor consists of a series of rare earth magnets that are ground, potted and attached to the outside diameter of a steel rotor. The sealing is achieved statically.
Then there is a synchronous operation under a constant torsion angle. If the maximum coupling torque and the maximum torsion angle are exceeded, the power transmission is interrupted.Since the torque transmission of the magnetic coupling pump is interrupted, the motor will be effectively protected.The motor will not burn out due to absolute torque transmission.
Application of magnetic coupling pump
Typical applications: Gear pumps, centrifugal pumps, screw spindle pumps, agitators, PU foaming lines.
The magnetic coupling pump parameter
Internal rotor and external rotor parameter | length unit: mm
| Model | ΦA | ΦB | C | ΦD | Φa | Φb | Φd | E | F | G | H | I | J | K | L | M | P | Torque |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CI045 | 45 | 38 | 50 | 19 | 33 | 27 | 12 | 32 | 6 | 21.8 | 38 | 4 | 5 | 4 | 60 | M4 | M3 | 2N.m |
| CI060 | 60 | 47 | 58 | 24 | 43 | 35 | 15 | 38 | 8 | 27.3 | 46 | 4 | 6 | 5 | 70 | M5 | M4 | 5.4N.m |
| CI080 | 80 | 58 | 65 | 28 | 58 | 48 | 20 | 40 | 8 | 31.3 | 49.5 | 5.5 | 7 | 6 | 80 | M6 | M5 | 11.5N.m |
| CI100 | 100 | 70 | 100 | 35 | 72 | 58 | 25 | 72 | 10 | 38.3 | 83 | 6 | 8.5 | 7 | 117 | M8 | M6 | 43.8N.m |
| CI120 | 120 | 70 | 105 | 35 | 86 | 70 | 30 | 72 | 10 | 38.3 | 86 | 6 | 8.5 | 7 | 125 | M8 | M8 | 84N.m |
Containment shroud parameter|length unit: mm
| Model | ΦA | ΦB | C | ΦD | E | L | P |
|---|---|---|---|---|---|---|---|
| CSCI045 | 65 | 31 | 37.5 | 29 | 5 | 38.5 | Φ4.5/P.C.D 55 |
| CSCI060 | 90 | 40 | 46.5 | 38 | 6 | 47.5 | Φ5.5/P.C.D 77 |
| CSCI080 | 115 | 55 | 49 | 51 | 8 | 51 | Φ6.6/P.C.D 99 |
| CSCI100 | 142 | 68 | 84 | 62 | 10 | 84 | Φ8.6/P.C.D 122 |
| CSCI120 | 165 | 82 | 86 | 74 | 10 | 88 | Φ8.6/P.C.D 145 |
Shaft fixing method
Type A
setscrew
Type B
with feather keyway
and setscrew
Type C
clamping hub
single slot with
feather keyway
Magnetic disc vs co-axial coupling comparison
| Magnetic disc vs co-Axial coupling comparison |
 |
 |
|---|---|---|
| Coupling style | Magnetic disc couplings ( CDS ) | Co-axial magnetic couplings ( CI ) |
| Permanent-magnetic | √ | √ |
| Contactless | √ | √ |
| Maintenance-free | √ | √ |
| Torsionally flexible | √ | √ |
| Low vibrations | √ | √ |
| Material | SUS304 (custom SUS316,PVC available) |
SUS304 (custom SUS316,PVC available) |
| 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 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 |
| Maximum torque [N.m] | 18.5N.m | 84N.m |
| 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:
- The magnetic coupling pump containment shroud is optional, we can produce it according to your drawings, the larger the order quantity, the better the discount.
- We are the original manufacturer for magnetic coupling pump, we provide very flexible customizability; any grade of magnet, any material, one-year warranty, lifetime technical support.
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