Brushed DC MotorASLONG JGB37 · Ø37 mm
JGB37-520 (1:30)
The ubiquitous JGB37-520 spur gear motor (1:30, 12 V, about 150 rpm at the output) — widely used in robots, locks and small actuators.
Manufacturer datasheet: ASLONG / Jinshunlaite (Shenzhen) · JGB37-520 (1:30) ↗ (checked 2026-10-17)Maker profile & contacts →
Figures are copied from the maker’s published datasheet; curves are calculated from them. Confirm with the manufacturer before ordering. Not stated on the datasheet, estimated from it: output-shaft model constants (fitted to the datasheet's no-load and rated points), inductance, rotor inertia, weight, length, shaft diameter, insulation class, IP rating.
How this motor is made
Full manufacturing overview: 37 mm Brushed DC Gear Motor (spur gearbox) →- 1. Armature lamination stamping
- 2. Shaft, commutator & core insulation
- 3. Armature winding
- 4. Commutator fusing
- 5. Armature test
- 6. Commutator turning
- 7. Armature balancing
- 8. Magnet fitting & magnetizing
- 9. Motor assembly
- 10. Run-in & motor test
- 11. Gearbox assembly
- 12. Gear motor end-of-line test
Export certification: Low-voltage motor without electronics
- Rated power
- 1.38 W
- Rated torque
- 0.0883 N·m
- Rated speed
- 150 rpm
- Rated efficiency
- 50.6 %
Performance curves
Right axis:
SpeedEfficiency (right axis)
Calculated with the linear DC-motor model (constant 12 V supply, ignoring resistance rise with temperature).
Full specifications
General
- Motor type
- Brushed DC Motor
- Series
- ASLONG JGB37
- Frame / flange
- Ø37 mm
Rated Values
- Rated voltage
- 12 V
- Rated power
- 1.38 W
- Rated torque
- 0.0883 N·m
- Rated speed
- 150 rpm
- Rated current
- 0.228 A
Performance
- Stall torque
- 0.351 N·m
- No-load speed
- 200 rpm
- Rated efficiency
- 50.6 %
- Peak efficiency
- 50.8 %
Electrical
- Torque constant Kt
- 0.526 N·m/A
- Back-EMF constant Ke
- 55.1 V/krpm
- Resistance
- 16.5 Ω
- Inductance
- 2 mH
- No-load current
- 0.06 A
- Stall current
- 0.727 A
- Electrical time constant
- 0.121 ms
- Mechanical time constant
- 0.0596 ms
Mechanical
- Rotor inertia
- 10 g·cm²
- Body length
- 55 mm
- Shaft diameter
- 6 mm
- Weight
- 0.17 kg
- Power density
- 8.14 W/kg
- Protection
- IP40