Abstract: A levitation-magnetic-force generating apparatus for linear motor cars including a plurality of electromagnets having a one and single core. The core comprises two plate-like side iron cores arranged in parallel with each other and separated from each other by a gap and a plurality of center iron cores located between the two side iron cores and separated with each other by another gap. Both side edges of each center iron core are fixed to the side iron cores by welding. Each of the center iron cores has a magnetic coil wound around the periphery thereof. The core is mounted in a truck body of a body of the linear motor car so that the longitudinal axis of the core is directed in parallel to the moving direction of the car's body.