Magnetic bearing application example

1. Machine tools used in machine tool spindle applications is limited, is on probation.
(1) precision machine tool spindle

French S2M company made use of 5-DOF controlled magnetic Roller bearing precision spindles, the radial bearing dn value 4X106mm · r / min, journal line speed 200m / s, thrust bearing dn value 8X106mm · r / min, linear velocity of the thrust journal 400m / s.

(2) ultra-precision lens lathe

French company S2M active magnetic bearing supported by the ultra-precision lens lathe spindle speed 2000r/min, power lkW, precision 0.05ttm.

2. Application of precision instruments

UK National Physical Laboratory developed maglev guideway automatically distinguish between measuring instrument in the band lkHz, bearing stiffness 175N/gm, resolution of 0.1nm.
 
Ultra-precision lens lathe

French company S2M active magnetic Slewing bearing supported by the ultra-precision lens lathe spindle speed 2000r/min, power lkW, precision 0.05ttm.

2. Application of precision instruments

UK National Physical Laboratory developed maglev guideway automatically distinguish between measuring instrument in the band lkHz, bearing stiffness 175N/gm, resolution of 0.1nm.

3. Pump Applications

(1) Blood Pump

University of Tokyo developed in cooperation with NTN Corporation magnetic bearing pump blood. Spindle controlled by a 5-DOF active magnetic bearing, radial bearing capacity imports of 18N, exports bearing radial load capacity of 22N, thrust bearing capacity of 9.2N.

(2) the adoption of the circulation pump France SEP S2M's active magnetic bearing research and development of rocket engines with liquid oxygen, liquid hydrogen circulation pump.

4. The application of space technology

Japan NAL & MELCO and NAL & TOSIBA companies with active magnetic bearing space attitude control inertia wheel.

5. Physics Experiment

(A) high-precision beam transducer Germany Uranit company introduced three magnetic bearing rotor with a particle beam converter.

(2) Neutron selector

German KFA manufactured neutron selector, using a single degree of freedom passive magnetic bearing rotor speed 36000r/min.