Description:300W High Speed Air-cooled PCB Motorized Spindle Motor Engraving Machine Accessories<br>Specification:<br>          Spindle motor       Air-cooled DC Motor                Working voltage          12-48V DC           Power        300W           Current       the maximum current is 6A           Speed       3000-12000 r\/min (12V - 3000 RPM， 24V - 6000RPM， 36V - 9000 RPM， 48V - 12000 RPM)           Torque       400mN.m           Temperature       15 \u2103           Insulation Resistance        &amp;gt; 2 M&amp;Omega;           Insulation Dielectric Strength       400V           Diameter       52mm           Length of the Chuck       Rod 35mm， (with nuts and chuck 52mm)           Wrench       13\/17           Length of Motor       175mm (including clamping part and motor)           Weight of Spindle motor       0.8kg           Chuck       ER11， 3.175mm   <br><br>See from above:<br><br><br>Feature:<br> The spindle radial runout is about 0.01 mm.<br> Can be used as carving  for metal or non-metal materials.<br> The spindle with forced air cooling， can work long hours.  Package Included: 1x  Motorized Spindle Motor 1x DC Power 1x Fixed Set  More Details: