Description:JKM Nema 23 57mm Two Phase Hybrid Stepper Motor 0.9 Degree 76mm  2.8A<br> Specification: Brand: JKM<br> Model Number: JK57HM76-2804<br> Diameter of axle: 6.35mm<br> Motor Length: 76mm<br> Boundary Dimension:57*57mm<br> Size: 57mm x 57mm x 76mm Holding Torque:18Kg.cm<br> Certification:  CE Scope: 3D Printers， Monitor Equipment， Medical Machinery， Textile Machinery， Packaging Machinery， Stage Lighting，ect.<br>       Genaral Specification:                    Item           Specifications                   Step Angle           0.9                    Temperature Rise            80\u2103max                   Ambient Temperature            -20\u2103~+50\u2103                   Insulation Resistance           100 M&amp;Omega; Min. ，500VDC                   Dielectric Strength           500VAC for 1minute                   Shaft Radial Play           0.02Max. (450g-load)                   Shaft Axial Play           0.08Max. (450g-load)                   Max. radial force           75N (20mm from the flange)                   Max. axial force           15N             Electrical Specification:                    Model No.           Step Angle           Motor Length           Rate      Voltage           Current      \/Phase           Resistance      \/Phase           Inductance      \/Phase           Holding Torque           # of Leads           Detent Torque           Rotor Inertia           Mass                           (  )           (L)mm           V           A           &amp;Omega;           mH           kg.cm           No.           g.cm           g.cm           Kg                   JK57HM76-2804           0.9           76           3.2           2.8           1.13           5.6           18           4           680           480                 1.1                 <br>  <br>  <br> Package Included:<br> 1x Stepper Motor<br>  <br> More Details: