wear , high hardness, has a long service life. Widely used for small devices such as equipment, engraving machine, etc. DIY installation process can improve your hands-on ability. The motor needs a A4988 driver (not included) to drive, and the motor can not directly connect to the power. The maximum linear speed is 25mm per second. Material: metal Color: silver Model: D8-MOTOR80 Rated voltage: 9-12V Thread rod diameter: 3mm / 0.1in Thread rod length: 90mm / 3.5in Slider block stroke: 80mm / 3.1in Drive mode: bipolar drive Thread rod pitch: ±0.5mm / ±0.02in (Moving 0.025mm for , can use microstep driver if needs smaller) Drive voltage: 12V DC 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 Pull-out thrust: 500g above at 125pps Max response frequency: 1600 above Max starting frequency: 1100 above Insulation class: class E Insulation strength: 100V AC one second Insulation resistance: 50M DC 500V Operating temperature: 0℃~+55℃ Motor temperature: 80℃ Item size: 105 x 15mm / 4.1 x 0.6in Item weight: 184g / 6.4ounce Note: The motor needs to be driven by the driver, not directly connected to the power. Package list: 4 x Motor with Linear Slide Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.