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-MOTOR80 Drive voltage12V DC (drive: 16219) Current per phase800 ma/phase Coil resistance 15 10%/phase No.of phases2 phases Step angle 18 ./step Excitation method1-2 phase excitation Drive modeBipolar drive Pull-out thrust500g above at 125pps Max response frequency1600 pps above Max starting frequency 1100 pps above Insulation classClass E Insulation strength100vac one second Insulation resistance50M DC 500V Operating temperature0~+55 Motor surface temperature80 Thread Rod Diameter3mm Thread Rod Length90mm Slide Block Stroke80mm Thread Rod Pitch0.5mm Length10.3cm/4.1in Weight50g (approx.) Package Includes: 1 x Motor with Linear Slide Package List 1100% brand new and high quality. 2Moving 0.25mm for one step, can use microstep driver if need smaller. 3The maximum linear speed is 25mm per second. 4Widely used for small devices such as medical equipment, laser engraving machine, etc. 5The motor need a A4988 driver(not included) to drive, can not directly connect to power.