PURPOSE: To enable direct driving of a mover in two perpendicularly crossing directions by providing a stator to be arranged with a plurality of permanent magnets in grid and the mover having four-phase core coils, and arranging the magnetic poles of three-phases at specific distances in the direction of X and Y axes with respect to the remaining phase.

CONSTITUTION: A stator 10 has a plurality of permanent magnets and guide rails 30, 40 while a mover has first and second core coil groups 22A-D(A-D phase), 24A-D(A-D phase), where the magnetic poles of B, C and D phases in the first and second groups are separated in the directions of X and Y axes by p.n±p/4p from the magnetic pole of phase A. Motion in the direction of X-axis is activated through excitation of phases A and B or phases C and D while motion in the direction of Y-axis is activated through excitation of phases A and C or B and D. By such arrangement, the mover can be driven directly in two perpendicularly crossing directions.