Features Model: D8-MOTOR80 The maximum linear speed of the stroke stepping motor is 25 mm per second, and one step moves 0.25 mm. Parameters:​​The number of phases is 2, the driving voltage is 12V DC (driver: 16219), the current per phase is 800 ma/phase, and the coil resistance is 15 10%Ω/phase. To use: This stroke stepper motor requires an A4988 driver (not included) to drive and cannot be directly connected to power. Application: Strong practicability, 80mm stepping motor can be widely used in medical equipment, laser engraving machine and other small equipment. Maintenance: Light weight and small size, the stroke stepper motor with linear slides is easy to install and remove, safe to operate and easy to control. Specifications: Model D8-MOTOR80 Drive voltage 12V DC (drive: 16219) Current per phase 800 ma/phase Coil resistance 15  10%Ω/phase No.of phases 2 phases Step angle 18 ./step Excitation method 1-2 phase excitation Drive mode Bipolar drive Pull-out thrust 500g  above at 125pps Max response frequency1600 pps above Max starting frequency 1100 pps above Insulation class Class E  Insulation strength100vac one second Insulation resistance 50M DC 500V Operating temperature0~+55℃ Motor surface temperature80℃ Thread Rod Diameter m Thread Rod Length 90mm Slide Block Stroke 80mm Thread Rod Pitch±0.5mm Length 10.3cm/4.1in Weight50g (approx.) Package Includes: 1 x Motor with Linear Slide Package List