Nidec's LPD4R5SG series, a ∅6mm linear stepper motor with an integrated gearbox, presents extremely high manufacturing difficulty, representing a typical challenge in micro-precision mechanical engineering. Within its limited dimensions, it highly integrates a ∅6mm planetary gearbox and a high-precision lead screw. It accomplishes rotor-stator assembly with micron-level tolerances, the winding of ultra-fine wires, and the threading of high-precision screws. It overcomes a series of challenges, such as vibration, noise, and insufficient thrust caused by any minor deviation, achieving high concentricity between the gearbox output shaft and the motor screw, as well as maintaining consistency in mass production. It is a comprehensive embodiment of precision machining, materials engineering, and micro-assembly technology.
Linear Motor Performance Parameters:
- Rated Voltage: 5V
- Mass: 2.6g
- Motor Step Angle: 22.5°
- Gear Ratio: 1:20.25
- Travel per Step: 0.0072mm
- Thrust Force: >3.04N (@ 2400 pps)
- Linear Speed: 17.4 mm/s (@ 2400 pps, 350g load)
- Performance Curve:
- Outline Dimension Diagram: Please see the downloadable document.
- Applications: Endoscope focusing and zooming; lens lifting mechanisms in smartphones; microscope autofocus; pipettes, etc.
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