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World’s smallest 2-phase stepper motor

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WITH an excellent power to volume ratio, 6mm outer diameter, 9.3mm length, and weighing only 1.4 grams, the new ADM 0620 from ERNI Australia is claimed as the smallest, produced in series, two-phase stepper motor in the world.

The motor is designed for voltages between 3 and 6 volts (voltage regulated). The inertial moment of the rotor is a minimal 0.7kgm2 10-9, and the angular acceleration reaches 165,000 rad/s which means that a power rating between 125~250mW can be achieved depending on the operating mode.

Areas of application include precision medical instruments, optical instrumentation, security and inspection systems, micro actuators and any application where the size, cost and reliability play a deciding role.

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