<p><font face="Tahoma">This gearmotor is a powerful 6V or 12V brushed DC motor with a 381:1 metal gearbox and an integrated quadrature encoder that provides a resolution of 64 counts per revolution of the motor shaft, which corresponds to 24384 counts per revolution of the gearboxot is output shaft. These units have a 16 mm-long, 6 mm-diameter D-shaped output shaft. At 12V, the speed is 11,000 rpm before the motor decelerates, and at 6V, the speed is 5500 rpm before the motor decelerates.</font></p><p><b>Wiki: </b><a href="http://www.cqrobot.wiki/index.php/DC_Gearmotor_SKU:_CQR37D">http://www.cqrobot.wiki/index.php/DC_Gearmotor_SKU:_CQR37D</a></p><p><font face="Tahoma"><b>Note: </b>Do not screw too far into the mounting holes as the screws can hit the gears. We recommend screwing no more than 3mm (0.12″) into the screw hole.</font></p><p><font face="Tahoma"><b>SPECIFICATION</b></font></p><ul><li><font face="Tahoma">Gear Ratio: 381:1;</font></li><li><font face="Tahoma">Max Power @ 6V: 3 W; Max Power @ 12V: 6 W;</font></li><li><font face="Tahoma">No-load Speed @ 6V: 14 rpm; No-load Speed @ 12V: 28 rpm;</font></li><li><font face="Tahoma">No-load Current @ 6V: 0.15 A; No-load Current @ 12V: 0.2 A;</font></li><li><font face="Tahoma">Stall Current @ 6V: 2.8 A; Stall Current @ 12V: 5.5 A;</font></li><li><font face="Tahoma">Stall Torque @ 6V: 57 kg.cm (792 oz.in); Stall Torque @ 12V: 70 kg.cm (972 oz.in);</font></li><li><font face="Tahoma">Encoder Operating Voltage: 3.3V to 24V</font></li><li><font face="Tahoma">Encoder Type: Hall (Incremental Type)</font></li><li><font face="Tahoma">Encoder Resolution: 64CPR</font></li><li><font face="Tahoma">Cable Specifications: 22AWG; Length: 20 cm;</font></li><li><font face="Tahoma">Cable Material: Silicone;</font></li><li><font face="Tahoma">Cable Output: 2.54 mm DuPont Female;</font></li><li><font face="Tahoma">Line Sequence: Red: Motor Power (Connects to One Motor Terminal); Black: Motor Power (Connects to the Other Motor Terminal); Gray: Encoder GND; Blue: Encoder VCC (3.3 V to 24 V); Yellow: Encoder A Output; White: Encoder B Output;</font></li><li><font face="Tahoma">Operating Temperature: -20 Degree Celsius to +60 Degree Celsius;</font></li><li><font face="Tahoma">Motor Size: 37D * 75L mm; Mounting Bracket Size: 38 mm * 30 mm * 30 mm;</font></li><li><font face="Tahoma">Weight: 235 g</font></li></ul><p><font face="Tahoma"><b>SHIPPING LIST</b></font></p><p><font face="Tahoma">1 * 381:1 Metal DC Geared-down Motor w/Encoder</font></p><p><font face="Tahoma">1 * Metal Mounting Bracket Kit</font></p>