Features:100% brand new and high quality.Moving 0.25mm for one step, can use microstep driver if need smaller.The maximum linear speed is 25mm per second.Widely used for small devices such as medical equipment, laser engraving machine, etc.The motor need a A4988 driver(not included) to drive, can not directly connect to power.Specifications:ModelD8-MOTOR80Drivevoltage12V DC (drive: 16219)Currentper phase800 ma/phaseCoilresistance 15 10%/phaseNo.ofphases2 phasesStepangle 18 ./stepExcitationmethod1-2 phase excitationDrivemodeBipolar drivePull-outthrust500g above at 125ppsMaxresponse frequency1600 pps aboveMaxstarting frequency 1100 pps aboveInsulationclassClass E Insulationstrength100vac one secondInsulationresistance50M DC 500VOperatingtemperature0~+55Motorsurface temperature80ThreadRod Diameter3mmThreadRod Length90mmSlideBlock Stroke80mmThreadRod Pitch0.5mmLength10.3cm/4.1inWeight50g (approx.)Package Includes:1 x Motor with Linear Slide