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TMAw Top-Mounted Magnetic Agitator

Mounted from the top, supported at the bottom: the TMAw transmits torque hermetically through a magnetic coupling at the lower end of a stationary tube. The bearing is the same as on the BMA and is lubricated by the medium.

0dynamic seals towards the product
ZrO₂ / SSiCbearing pairing, the same as on the BMA

Overview

Mounted from the top. Supported at the bottom.

The TMAw sits on the top of the vessel. A stationary tube reaches down close to the vessel bottom; at its end sit the magnetic coupling and the impeller. Only the rotor turns in the product space — the long drive shaft runs protected inside the tube.

  • Mounted from the top, through the top flange
  • Hermetic magnetic coupling at the lower end of the tube
  • Stationary tube with the drive shaft and driving magnet inside
  • Only the rotor with the impeller turns in the product space
  • Bearing as on the BMA, lubricated by the medium
  • Bearings made of zirconium oxide and silicon carbide
  • Drive with motor and gearbox in RAL 7035

Design

The coupling in the medium. The drive in the tube.

The simplified diagram shows the lower end: inside the stationary tube the driving magnet turns on the drive shaft, outside on the tube runs the rotor with the driven magnets. The tube separates the two completely — there is no shaft passage into the product space.

  • Driving magnet inside, driven magnets outside, separated by the tube
  • Rotor on the same bearing as on the BMA
  • The medium lubricates and cools the bearings
  • Impeller mounted directly on the rotor

Positioning

Three top-mounted designs. One coupling.

All top-mounted magnetic agitators transmit the torque hermetically through a magnetic coupling. They differ in where coupling and bearing are located.

TMAi

Coupling at the top, internal bearingsTMAi

Coupling and ceramic bearings at the top, the shaft hangs freely into the vessel.

TMAe

Coupling at the top, external bearingsTMAe

The bearing lies outside the product space, with an external CIP/SIP connection.

TMAw

Coupling at the bottom, bearing in the mediumTMAw

Coupling and bearing at the lower end of the stationary tube, medium-lubricated as on the BMA.

Contact

Enquiry

Tell us the vessel volume, the installation at the top flange, the medium, viscosity and process. We size drive, tube length and impeller and propose the right version.

Prefer to write directly?

+41 55 450 83 00 sales@liquitec.ch