Features: 1The product possess stable gear transmission, wear?resistance, and large transmission torsion 2Come with two ? phase reduction gear motor with encoder, which is powerful and practical 3This speed encoder gear motor can support rotate and reverse, which achiceves work more accurately 4Made of high quality copper and stainless steel material, sturdy and durable for a long service life 5This brush DC motor possess stable performance and high efficiency, convenient for you to use Item Type: Gear Motor Material: Copper, stainless steel Model: GA25-370 Motor Type: Brush DC motor Parameter: VoltageReduction ratioGear box L length(approx.)No-loadLoadBlock load Rotate speedCurrentRotate speedCurrentTorsionCurrentTorsion 12V1:50027mm / 1.1in10RPM60MA8RPM300MA440g.cm4A14.9KG.CM 12V1:23027mm / 1.1in30RPM60MA22RPM300MA560g.cm1.1A14.7KG.CM 12V1:10323mm / 0.9in60RPM60MA51RPM300MA320g.cm1.1A12.75KG.CM 12V1:6023mm / 0.9in100RPM60MA78RPM300MA260g.cm1.1A11.2KG.CM 12V1:4421mm / 0.8in150RPM60MA118RPM300MA160g.cm1.1A9.2KG.CM 12V1:2021mm / 0.8in300RPM60MA235RPM300MA160g.cm1.1A5.6KG.CM 12V1:2021mm / 0.8in500RPM70MA477RPM300MA150g.cm1.1A3.5KG.CM 12V1:1021mm / 0.8in1200RPM100MA1046RPM300MA45g.cm1.1A3.3KG.CM Red: Motor power + positive (change can control motor forward and reverse) Black: Encode power - negative (positive and negative can not be connected incorrectly 3.3-5V) Yellow: Signal feedback (11 signals from the motor) Green: Signal feedback (11 signals from the motor) Blue: Encoder power + positive (positive and negative can not be connected incorrectly 3.3-5V) White: Motor power - negative (change can control motor forward and reverse) Diameter: Approx. 25mm / 1in Approx. 7mm / 0.3in Approx. 4mm / 0.2in Approx. 14mm / 0.6in Approx. 24.4mm / 1in Size: Approx. 3.5mm / 0.1in Approx. 8mm / 0.3in Approx. 12mm / 0.5in Approx. 2.5mm / 0.1in Approx. 31mm / 1.2in Approx. 40mm / 1.6in(for reference) Approx. 17mm / 0.7in 1 x Gear Motor