RK-3035SA 5V 6V 7.4V 30mm Carbon Brush Motor For Small Household Appliances

Product Specification

Mini RK-3035SA 5V 6V 7.4V  30mm Carbon Brushes  For Small Household Appliances

RK-3035SA Mini Electric Motor Techincal Parameters

Motor Type:RK-3035SA-23184
Rated voltage: DC/6.0V.

Rated load: 40g-cm.
No-load current: 150mA MAX.
No-load speed: 4300±300r/min.
Load current: 480mA MAX.
Load speed: 3700±260r/min.
Axial clearance: 0.05~0.50.
Plugging torque: ≥31.86m-Nm (325g-cm)
Starting voltage: ≤1.5V.
Motor noise: ≤ 55dB (distance 10cm).
Insulation resistance: DC/100V 10MΩ MIN.
Motor insulation grade: Class F.

Motor Type:RK-3035SA-15360A

Rated voltage: 12.0V

No-load speed:4300±10%

No-load current: ≤80mA

Load speed:4300±10%

Load current: ≤300mA

Starting torque: ≥200g-cm

Motor height: 30.5±0.3mm

Motor outer diameter: 30.3±0.3mm

External dimensions:30.3*30.5mm

Output shaft length: 8.0±0.3mm

Dummy position: 0.05-0.5mm

Motor steering: CCW

Range of use: Spray disinfection/Automobile massage chair /vacuum packaging machine /bottle opener/ small household appliances and other daily necessities

 Structure Type: brushed

Application scope: industrial use

Excitation method: permanent magnet type

Housing protection method: closed

Processing customization: custom processing

Rated power: 5.30W

Efficiency: 98%

Insulation level: B

Protection level: 1

Output shaft length: 8.00±0.01mm

Starting voltage: 3.0V

Starting torque: 200nm

RK-3035SA Carbon Brushes Mini Electric Motor Dimension

Standard RK-3035SA Small High Torque Electric Motor Size/Dimension Information
1.Motor Diameter:30.1±0.3mm

2.Motor Height:30.5±0.3mm

3.Front Step Height:2.6±0.1mm

4.Front Step Diameter:10±0.1mm

5.Shaft Diameter:2.5mm (Round Shaft)

6.Shell Mounting Hole Distance:22±0.1mm

7.Screw Hole Size:2.6*0.45mm

7.Terminal Distance:23.2±0.1mm

Applications of RK-3035 Micro DC Motor in Diaphragm Pumps/Vacuum Negative Pressure Pumps/Inflators/Aquarium Air Pumps

Model: RK-3035SA-23184
Rated Voltage: DC 6V
Load Capacity: 40g-cm | Stall Torque: ≥325g-cm
No-Load Speed: 4300±300 RPM | Load Speed: 3700±260 RPM

Key Application Fields

1. Diaphragm Vacuum/Negative Pressure Pumps

   • With a load speed of 3700 RPM and stall torque of 325g-cm, it efficiently drives diaphragm reciprocating motion to quickly generate negative pressure, suitable for:

     • Small vacuum packaging machines

     • Medical suction devices

     • Laboratory vacuum systems

2. Miniature Inflators (DIY Inflator)

   • Low starting voltage (≤1.5V) ensures quick response, making it ideal for:

     • Balloon/air mattress inflators

     • Pneumatic tool auxiliary inflation

     • Portable outdoor inflation devices

3. Aquarium Air Pumps

   • Low-noise design (≤55dB at 10cm) prevents disturbance to aquatic life, while stable 6V/480mA load operation ensures long-term reliable oxygen supply.

4. Industrial Micro Starters

   • High torque output enables driving small mechanical structures, applicable in:

     • Automated valve triggering

     • Small conveyor belt drives

     • Instrument reset mechanisms

Product Advantages

✅ High Power – Stall torque of 325g-cm easily overcomes pump resistance
✅ Low Power Consumption – Rated load current only 480mA, energy-efficient
✅ Instant Start/Stop – Starting voltage ≤1.5V, ultra-fast response
✅ Quiet Operation – ≤55dB noise level, suitable for noise-sensitive environments

Typical Use Cases
▸ Medical Devices: Dental suction units, negative pressure wound therapy systems
▸ Home Appliances: Portable vacuum cleaners, smart toilet vacuum generators
▸ Industrial Automation: Pneumatic component test benches, small automated actuators

Customization Options Available! (Voltage, shaft length, IP rating, etc.)

Note: Optimal performance requires matching with a gearbox or transmission mechanism to adjust torque/speed ratio.