What is the specific magnetic loading for the motors having output less than 100 W?

The specific magnetic loading for motors, particularly those with an output of less than 100 W, is not defined by a single value universally applicable to all types of motors. Magnetic loading is a design parameter that represents the flux density in the air gap of a motor. It is typically measured in Tesla (T) or Weber per square meter (Wb/m^2). The optimal value of magnetic loading depends on various factors including the type of motor (e.g., AC or DC, synchronous or induction), its size, efficiency goals, material used for the magnetic core, and the specific design and application requirements.

For small motors, such as those under 100 W, designers aim for high efficiency and compact size, balancing material costs with performance. Consequently, the magnetic loading might be optimized to ensure the motor runs efficiently without excessive core losses or overheating, but without a universal standard value. In small permanent magnet motors, for example, magnetic loading might be relatively high due to the use of strong permanent magnets. In contrast, small induction motors might have a different optimal magnetic loading, considering their use of electromagnets.

For precise design values, manufacturers or design texts specific to the motor type in question should be consulted, as these resources can provide guidance based on the latest material capabilities and design strategies.