Single phase, single speed, air over, PSC induction motors for centrifugal blowers for fan coil units. With additional autotransformer a range of up to 7 speeds is attainable. Shafts have 10 mm diameter to reduce friction losses at start-up; they are supported by self-aligning sleeve bearings kept in place by special spiral springs which guarantee optimum alignment between bearings and shaft; the lubricant reserve of the bearings guarantees long, maintenance free, silent operation. Fan wheels having[...]