Electric motor with magnetic thrust bearings

A spindle motor comprising: a stationary engine component (10, 12; 212), a rotationally movable engine component (14, 22; 122; 214, 222; 322), one in a bearing bush (12, 212) rotatably mounted shaft (14; 214) and one (14; 214) connected to the shaft hub (22; 122; 222; 322) comprises, at least one fluid dynamic journal bearing (24a, 24b; 224a, 224b), formed between surfaces of the bearing bush (12) and the shaft (14) for the rotational mounting of the rotatable engine member (14, 22; 122; 214, 222; 322) with respect to the stationary motor part (10, 12; 212) about a rotational axis (30; 230), wherein a bearing gap (16; 216) is formed between parts of the rotatable and parts of the stationary motor member and filled with a bearing fluid, a magnetic thrust bearing (36; 236) having a first bearing member (38; 238) comprising at least one permanent magnet (40; 240) and at least two associated therewith flux guide (42a, 42b; 242a, 242b) disposed on opposite end faces of the permanent magnet and essentially ...