Description:<br />JKM Nema 17 0.9 Degree 42 Two Phase Hybrid Stepper Motor 40mm 1.68A For CNC Router<br /><br />Specification:<br />Brand: JKM<br />Model Number: JK42HM40-1684<br />Diameter of axle: 5mm<br />Motor length: 40mm<br />Boundary Dimension:42*42mm<br />Size: 42mm x 42mm x 40mm<br />Holding Torque:3.3Kg.cm<br />Certification:  CE<br />Scope: 3D Printers・ Monitor Equipment・ Medical Machinery・ Textile Machinery・ Packaging Machinery・ Stage Lighting・ect.<br /><br />Genaral Specification:<br />ItemSpecificationsStep Angle0.9&amp;amp;deg;Temperature Rise 80★maxAmbient Temperature -20★~+50★Insulation Resistance100 M&amp;amp;Omega; Min. ・500VDCDielectric Strength500VAC for 1minuteShaft Radial Play0.02Max. (450g-load)Shaft Axial Play0.08Max. (450g-load)Max. radial force28N (20mm from the flange)Max. axial force10N<br />Electrical Specification:<br />Model No.Step AngleMotor LengthRate<br />VoltageCurrent<br />/PhaseResistance<br />/PhaseInductance<br />/PhaseHolding Torque# of LeadsDetent TorqueRotor InertiaMass( &amp;amp;deg;)(L)mmVA&amp;amp;Omega;mHkg.cmNo.g.cmg.cmKgJK42HM40-16840.9402.81.681.653.23.3422054<br />0.28<br /><br />Package Included:<br />1x Stepper Motor<br /><br />More Details:<br /><br />