12V DC Worm Gear Stepper Gear Motor NFP-GW4632-25BY Datasheet NFP-GW4632-25BY is a compact 12V DC worm gear stepper gear motor designed for precise low-speed transmission and stable positioning applications. With its worm reduction structure, this motor provides strong self-locking performance after power-off, which helps prevent reverse movement in holding systems. The integrated D-cut output shaft improves coupling stability and makes installation easier in compact mechanisms. This model also features low noise operation, reversible rotation, and protected lead wire design for improved reliability. It is suitable for smart devices, small automation systems, camera motion control, and compact paper feeding or cutting equipment where controlled stepping movement and high reduction are required. Product Features Feature Description Worm Gear Structure Provides stable reduction transmission with strong self-locking ability after power-off. Low Noise Operation Suitable for applications that require quieter running performance. Reversible Rotation Supports CW and CCW control for bidirectional motion applications. PCB Protected Wiring The lead wire connection is reinforced for better protection and reduced risk of loosening. D-cut Output Shaft Convenient for installation, improves coupling grip, and helps reduce slipping. Compact Structure Designed for space-limited assemblies requiring gear reduction and precise output motion. Product Specifications Item Specification Model NFP-GW4632-25BY Motor Type Worm Gear DC Stepper Gear Motor Rated Voltage 12V DC Output Shaft Length 18.5mm Output Shaft Type D-cut shaft Center Hole Threaded hole Step Angle 15° Phase Resistance 10±7% ohm/phase Weight Approx. 135g Rotation CW & CCW Wiring Yellow B, Red B-, Black A, Blue A- Wiring Sequence Pin No. Color Phase Function 1 Yellow B B phase 2 Red B- B reverse phase 3 Black A A phase 4 Blue A- A reverse phase Stepper Motor Input Parameters Item Specification Item Specification Rated Voltage 12V DC Phase Current 300mA/phase Phase Resistance 10±7% ohm/phase Motor Phases 2 phases Step Angle 15°/step Excitation Mode 2 phases excitation Drive Mode Bipolar drive Phase Inductance 7.5mH/phase Pull-out Torque More than 60gf.cm at 100pps Holding Torque More than 75gf.cm at 0pps Max Response Frequency More than 1300pps Max Starting Frequency More than 800pps Insulation Class Class E for coils Insulation Strength 100V AC for one second Insulation Resistance 100MΩ DC 500V Operating Temperature -10 – 55℃ Model: NFP-GW4632-25BY, 12V DC Ratio Step Angle No-load Speed Holding Torque Pull-out Torque 1:32 0.469 54rpm ≥2kg.cm ≥1.5kg.cm 1:65 0.231 27rpm ≥4kg.cm ≥3.5kg.cm 1:158 0.095 11rpm ≥10kg.cm ≥8.5kg.cm 1:200 0.075 8.7rpm ≥13kg.cm ≥11kg.cm 1:337 0.045 5.2rpm ≥20kg.cm ≥18kg.cm 1:564 0.027 3.1rpm ≥25kg.cm ≥25kg.cm 1:1019 0.015 1.72rpm Not allowed over 25kg.cm Not allowed over 25kg.cm Note: all reduced no-load speeds have a tolerance of ±15%. NFP-GW4632-25BY Worm Gear Stepper Motor Outline Drawing The outline drawing of NFP-GW4632-25BY shows a compact gearbox body combined with a stepper motor rear section, making it suitable for installations where mounting space is limited. The motor uses an 18.5mm D-cut output shaft to improve transmission stability and simplify coupling installation. Its front face structure supports practical mounting for small automated assemblies, while the integrated worm reduction design helps provide controlled output movement and self-locking capability. This compact arrangement is useful for motion control systems that require stable low-speed operation, reliable holding force, and straightforward mechanical integration into compact devices. Outline Structure Highlights Item Description Gearbox Width Approx. 32mm front structure Overall Height Approx. 46mm front face size Body Length Approx. 61mm overall side structure Output Shaft Diameter Ø6mm Output Shaft Length 18.5±0.5mm Wire Length 150±10mm Connector PHR-04 white Applications: Smart self-balancing vehicles, patrol robots, smart home appliances, service robots, camera pan-tilt systems, paper cutting machines, compact positioning devices, small automation modules Keywords: 12v worm gear stepper motor, worm gear dc stepper motor, self-locking stepper gear motor, low noise worm gear motor, d shaft stepper gear motor, compact worm gearbox motor, reversible stepper gear motor, 12v reduction stepper motor, smart robot gear motor, paper cutting motor
