Description: Stepper Motor Driver and 40mm Stepper Motor for CNC Engraving Machine.    Specification: Stepper Motor Driver.  Size:96X56X35mm;  Appl to motor:Nema 17/23/34(42/57/86 Stepper Motor);  Control signal:3.3V-24V;  Subdivision accuracy:1-32;  Output current:4A;  Voltage:DC9-24V.    Stepper Motor.  Type:Hy-brid;  Phase:2;  Step Angle:1.8°;  Motor Size:42 x 40mm;  Shaft:"D" shaft 22 x Ф5mm;  Outlet way:"4" plug line;  Motor leads:Dupont line(1M);  Adapter drive:Two-phase step drive;  Scope:3D Printers, Monitor Equipment, Medical Machinery, Textile Machinery;  Packaging Machinery, Stage Lighting, Laser engraving, Automation Equipment, Non-standard Equipment, Placement machine ect.    General Specification: Precisions angle step:±5% (full step, no charge);  Resistance accuracy:±10%;  Precisions inductance:±20%;  Temperature rise:80deg Max (rated current, 2 phase on);  Ambient temperature:( - 20°)-(+ 50°);  Insulation resistance:100MΩ Min, 500VDC;  Insultion Force:500VAC for a minute.    Features: 1. DC 9-42v power supply, DC12-24V power supply best.  2. Controller input signal voltage 3.3-24V General.  3. Subdivision precision 1-32 subdivision optional.  4. Output current 4.0A.  5. H bipolar constant current drive bridge.  6. High speed optocoupler isolation input signal.  7. Built in temperature protection and over-current protection.  8. Automatic half of the flows reduce fever.  9. Motor noise optimization function.  10. Small volume, space saving.  11. Good acceleration performance.    Package Included: 1 X Stepper Motor Driver;  1 X Stepper Motor