SMJ40 Datasheet | FDK

SM-SME001-0504 .. Stepping Motor Applications Mobile equipment Digital cameras, Mobile equipments, PDA, etc. Office automation equipment Printers, facsimiles, Typewriters, Photocopiers, FDD head drives, CD-ROM pickup drives, Scanners, etc. Audio-visual equipment Video cameras, Digital cameras, etc. Measuring instruments Automotive odometers, Various integrating meters and counters Game equipment Pachinko machines, etc. Structure and operation Stepper motors convert electric pulses into incremental mechanical motions. FDK's stepper motors have a claw-pole yoke structure with a cylindrical permanent magnet rotor, as illustrated below. These motors rotate when a rotating magnetic field is generated and when the rotor magnet is synchronized with the rotating magnetic field. Specifically, a rotating field is generated by applying alternating current to the solenoid coils of two stators, which are sandwiched between yokes. These yokes have the same number of teeth as the poles of the rotor magnet. The stators are positioned so that their electric phase angles are 90 degrees apart. Code names http://.fdk. SM-SME001-0504 .. Rotor magnets Rotors are the most important ponent of stepper motors, and FDK uses its original magnets in rotors. The following types of FDK magnets are used in rotors to match each of the diverse stepper motor applications. ρ ∼ ∼ ∼ ∼ ∼ ∼ Types and specifications Note: - "External dimensions" refer to the three measurements shown in the lefthand drawing. - White circles indicate models under development. http://.fdk. SM-SME001-0504 .. Shapes and dimensions These drawings are full-scale. Please see page 8 for shaft length. http://.fdk. SM-SME001-0504 .. http://.fdk. SM-SME001-0504 .. Standard flanges 1. Flange shapes The standard flange shapes of FDK stepper motors are divided into round aperture types and screw types. These standard shapes are intended to shorten the delivery period and reduce the initial costs. Special-shape...