Mini Tiny 5mm/43mm Precision Planetary Gear Stepper Motor Micro 2-Phase 4-Wire Stepping Motor Linear Metal Screw Slider Camera _x000D_ _x000D_ Specification: _x000D_ _x000D_ Note: This motor is 2-phase 4-wire stepper motor, it requires an additional stepper driver and pulse signal to operate. _x000D_ _x000D_ _x000D_ new micro two phase four wire stepper motor with a precision planetary gearbox, which drives the driver's pole to push the metal slide and move up and down. This is very miniature and precisely controllable miniature linear motor designed for adjusting the lens on mobile phones. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ There are two models of stepper motors, the model A motor diameter is 5mm, motor height is 6.5mm. _x000D_ The effective stroke of the slide is 8mm, and 2500 pulses are required to complete the stroke. _x000D_ The model B motor diameter is 4.3mm, motor height is 8.3mm. _x000D_ The effective stroke of the slide is 8mm, and 1750 pulses are required to complete the stroke. _x000D_ At the top of the screw, there is a super miniature ball bearing. _x000D_ ========================= _x000D_ _x000D_ Package List: _x000D_ _x000D_ Motor x 1PCS _x000D_ _x000D_ ======================= _x000D_ _x000D_ Model A: _x000D_ _x000D_ _x000D_ 1.Motor type: 2-phase 4-wire stepper motor _x000D_ 2.Motor diameter: 5mm _x000D_ 3.Motor height: 6.5mm _x000D_ 4.Motor phase resistance: 14.3 ohms _x000D_ 5.@5V short ciucuit current: 300mA _x000D_ 6.Slider stroke: 8mm _x000D_ 7.Approximately 2500 pulses complete the journey, and one pulse signal moves 0.0032 mm _x000D_ 8.Weight: 3.1g _x000D_ _x000D_ _x000D_ _x000D_ ======================= _x000D_ _x000D_ Model B: _x000D_ _x000D_ _x000D_ 1.Motor type: 2-phase 4-wire stepper motor _x000D_ 2.Motor diameter: 4.3mm _x000D_ 3.Motor height: 8.3mm _x000D_ 4.Motor phase resistance: 10 ohms _x000D_ 5.@5V short ciucuit current: 390mA _x000D_ 6.Slider stroke: 8mm _x000D_ 7.Approximately 1750 pulses complete the journey, and one pulse signal moves 0.0046 mm _x000D_ 8.Weight: 3g _x000D_ _x000D_ _x000D_ _x000D_ _x000D_