Temperature-controlled torquetransmitting; magnet coupling system

A magnet coupling system for transmitting torque between a driving means and a shaft, said magnet coupling system having:

• driving and driven coupling elements disposed concentrically to one another, with each of said driving and driven coupling elements having magnetic elements thereon, the magnetic elements of the driving and driven coupling elements coacting with one another but defining a gap therebetween, said driven coupling element adapted to be coupled to said shaft;
• a can having a non-rotatably-mounted portion passing through the gap;
• a sleeve bearing apparatus comprising a stationary part for supporting a pair of axially spaced sleeve bearings adapted for holding the shaft;
• and,
• a fluid-circulating means for circulating a temperature-control fluid through the stationary part of said sleeve bearing apparatus, wherein:
• a) the stationary part of the sleeve bearing apparatus includes an annular-shaped bearing casing encircling both of the sleeve bearings and defining a sealed fluid flow chamber therein;
• b) the bearing casing comprises inlet and outlet passages porting the fluid flow chamber which are for connecting to external fluid inlet and outlet conduits external of the magnet coupling system;
• c) an outer circumference of the bearing casing is adjacent to, radially-inwardly-spaced from, and concentric with, an inner circumferential surface of the driven coupling element so that heat is transferred radially therebetween;
• and
• d) the bearing casing is substantially accommodated within the driven coupling element.