33mm Diameter 520 Motor 7000Rpm 12V Brushed DC Motor For Water Pump Electric Motor
RK-520SA-19270 520 Motor Techincal Parameters
Model: RK-520SA-19270
Shaft Type:Dual Shaft
Front Shaft Length: 16.6±0.2mm
End Shaft Length:4.5±0.15mm
Shaft Diameter: 2mm
Motor Body Diameter:33±0.3mm
Motor Body Length: 22.7mm (Without shaft length)
Voltage Range: DC2V-24V
Front Steps Diameter:8.2mm
Front Step Height:2±0.1mm
Diagonal Installation Pitch: 26mm
Mounting Hole Size: M2.6*0.45
Mounting Holes: 2 Holes
RK-520 12V 24V Dual Shaft DC Electric Motors With Pump Dimension
![]()
RK-520 Mini DC Electric Motor Mini Pump Case Electrical Parameters
Note: Custom parameters available. Please contact customer service before ordering.
| Parameter | Specifications |
|---|---|
| Rated Voltage | DC 3V / 6V / 9V / 12V / 24V |
| Rated Current | ≤1200mA / ≤600mA / ≤430mA / ≤300mA |
| Nozzle Diameter | 4.5mm |
| Vacuum Flow Rate | 1.5-4.0 LPM |
| Noise Level | ≤65dB (measured at 30cm) |
| Power | 3.6W |
| Lifespan Test | >500 hours (continuous operation) |
| Weight | 67g |
Typical Applications
Household appliances, medical/beauty equipment, adult products, blood pressure monitors, massage devices, pressurization technology, etc.
![]()
Notes:
1. Usable machine screw length 1. 5max. from motor mounting surface.
2. AIlowable torque for screwing of tapped hole:2. 5kgf-cm max.
3. No remarkable scraches on dents on the surface.
4. Tolerances not otherwise specified decimal:士0. 3mm.
Application of RK-520 Micro DC Motor in Micro Pumps
Pneumatic Motors
Motor diameter: 33.2MM
Pump head size: 32*31 MM
Total length of pump including motor: 54MM
Outlet outer diameter: 4.5MM (suitable for air pipes with an inner diameter of 4MM)
Air Pump
Voltage range: DC 12V-24V
Rated voltage: DC 24V
No-load current: 0.13A
Rated power: 3.6W
Pressure Range: ≥600mmhg
Weight: 70g
Structure: Air pump
Pressure: Low Pressure
Model: 520 air pump
Pressure Oxygen Inflatable Pump
Motor Diameter: about 33mm
Pump Head Diameter: about 32x32mm
Pump Head Length: about 27+8.5mm
Pump Head and Motor Length: about 78mm
Nozzle Diameter: 5mm
Nozzle Length: 9mm
![]()
![]()
As a trusted supplier of small dc gear motor solutions, Lihua Motor manufactures high-quality mini dc motor with gearbox assemblies for industrial and consumer applications. Our small worm gear motor series delivers reliable torque output with customizable speed and voltage options to meet OEM requirements.