20Pcs 6V 12V Brush DC Gear Motor with Spur Gearbox 3kg.cm Permanent Magnet Motor

Model GM25-320SH is a compact DC gear motor delivering torque up to 0.5 Nm. Available with various reduction ratios and encoder option (11 PPR).

Features:
Compact DC geared motor
Output torque: up to 0.5 Nm
Available reduction ratios: 4:1, 10:1, 21:1, 34:1, 47:1, 78:1, 103:1, 130:1, 227:1, 499:1;
Encoder compatible (11 PPR);

Electrical Specifications
Model: GM25-320SH
Operating voltage: 6 V / 12 VDC
Rated torque: 3.0 kg·cm (0.294 Nm)
Maximum momentary torque: 6.0 kg·cm (0.588 Nm)
Rated current: 150 mA (6 V) / 180 mA (12 V)
No‑load speed (without gearbox): 5000 rpm (6 V) / 6800 rpm (12 V)
Rated speed (without gearbox): 4200 rpm (6 V) / 5800 rpm (12 V)
No‑load speed (gearbox output): 10‑1600 rpm
Rated speed (gearbox output): 8‑1450 rpm
Rated power: 0.43 W (6 V) / 1.19 W (12 V)
Gear type: Spur gearbox
Efficiency: 80‑90 %
Noise level: 40‑50 dB (measured at 30 cm);

Mechanical Specifications:
Motor dimensions: Φ24.4 mm × 19 mm
Gearbox length options: 17 mm, 19 mm, 21 mm, 23 mm, 25 mm, 27 mm
Flange diameter: Φ25 mm
Shaft type: D‑cut
D‑cut diameter: 3.5 mm
D‑cut length: 8 mm
Shaft length: 9.5 mm
Shaft diameter: 4 mm
Weight: 6g;

Applications:
Marine equipment, automotive accessories, electric bicycles, home appliances, cosmetic instruments, smart‑home devices, and industrial equipment.