SPIDER Automation | MY6812 12V 120W Brushed DC Motor | 3350RPM Output, 7A Rated Current & Compact Electric Drive Design
The SPIDER Automation MY6812 12V 120W Brushed DC Motor is a compact electric drive motor designed for compatible electric bicycles, scooters, quads and other small electric vehicle applications. It operates on a 12V DC supply and uses brushed motor technology, with a listed rated speed of 3350RPM and operating power of 120W.
The motor is supplied without an integrated gearbox and provides a direct motor output for compatible drive arrangements. Its listed rated torque is 4.58kg-cm, with a rated current of 7A. The cylindrical body measures 120mm in length and 68mm in diameter, and the motor includes a 25cm connection cable. Rotation direction can be reversed by changing the motor supply polarity, subject to the connected controller and system wiring.
Product Overview & Motor Construction
The MY6812 is a brushed DC motor intended for compact electric drive systems. Unlike a geared motor, this version does not include an integrated reduction gearbox. Its 3350RPM rated speed is therefore the motor’s direct rotational output, and any additional speed reduction or torque multiplication must be provided by the external drivetrain where required.
The 12V motor is suited to installations designed around its electrical rating, physical dimensions and output characteristics. Its cylindrical form supports integration into compatible equipment where the available mounting arrangement and mechanical coupling match the motor.
Technical Features & Functional Characteristics
- Brushed DC Motor Technology: Uses a brushed commutation system and requires a compatible brushed DC motor controller.
- 12V DC Operating Voltage: Designed for use in compatible 12V electrical drive systems.
- 120W Operating Power: Provides the listed motor power rating for selecting a suitable drive configuration.
- 3350RPM Rated Speed: Specifies the listed rotational speed of the motor output.
- 7A Rated Current: Provides the supplier-listed current value for preliminary electrical system assessment.
- 4.58kg-cm Rated Torque: Identifies the listed torque value, equivalent to approximately 0.45N·m.
- No Integrated Gearbox: Uses a direct motor output; an external transmission can be incorporated where the application requires a different output speed or torque.
- 72–75% Listed Efficiency: Provides the supplier’s stated efficiency range for reference when evaluating motor performance.
- Compact Cylindrical Housing: The listed motor body dimensions are 120mm × 68mm.
- 25cm Connection Cable: Provides a short cable for connection to the compatible motor controller.
- Reversible Rotation: Direction of rotation can be changed by reversing the motor’s power connections, subject to the controller and installation arrangement.
Motor Speed & Direct Output Configuration
The MY6812 has a listed rated speed of 3350RPM. As this version does not include an integrated gearbox, the stated speed refers to the motor output rather than a reduced gearbox output. The final wheel or mechanism speed depends on the transmission ratio, driven component dimensions, controller operation and applied load.
Where a lower output speed or greater torque at the driven component is required, a compatible external reduction arrangement may be incorporated. Transmission components must be selected to match the motor shaft interface and the mechanical loads of the application.
Electrical Characteristics & Direction Control
The motor is specified for 12V DC operation, with a listed rated current of 7A and operating power of 120W. It should be operated using a suitable brushed DC motor controller compatible with the motor’s voltage and current requirements. A brushless motor controller is not suitable for this brushed motor.
The motor description states that its direction can be changed by reversing the power connections. This allows clockwise or counterclockwise operation where supported by the connected controller and application. The available product information does not provide wire colours, connector details or a terminal pinout, so connections should follow the correct motor and controller documentation.
Mechanical Dimensions & Installation
The motor has a listed cylindrical body length of 120mm and diameter of 68mm. These dimensions should be considered when checking installation clearance, mounting support and alignment with the connected drivetrain.
The supplied information does not establish shaft diameter, shaft length, shaft profile, keyway, mounting-hole pattern or retention method. The mechanical coupling and mounting arrangement must therefore be matched to the actual motor before installation. Do not assume that the motor is a direct replacement for another MY6812 variant solely from the model designation.
Applications
The MY6812 12V motor is intended for compact drive systems where its brushed motor technology, rated speed, power and mechanical configuration are compatible with the equipment.
- Electric Bicycle Drive Systems: Use in compatible 12V electric bicycle projects with an appropriate motor controller and drivetrain.
- Electric Scooters: Integration into compact scooter drive systems designed for a 12V brushed DC motor.
- Electric Quads: Motor selection for compatible small electric quad platforms with suitable mechanical transmission.
- Compact Electric Vehicles: Use in small electric vehicle designs requiring a 12V, 120W brushed motor.
- Robotic Drive Systems: Integration into mobile robots requiring a compact brushed DC motor and suitable mechanical coupling.
- Mobile Robotic Platforms: Drive-system use in wheeled platforms designed around the motor’s rated speed and electrical requirements.
- Custom Electric Carts: Use in appropriately engineered compact electric cart projects with compatible drive arrangements.
- Engineering Prototypes: Integration into test assemblies and development platforms requiring a 12V brushed DC motor.
- Mechanical Drive Assemblies: Use in mechanisms where the motor’s direct output can be coupled to the driven component or an external reduction stage.
- Replacement Motor Installations: Replacement of an existing MY6812 motor when electrical ratings, shaft configuration and mounting dimensions match.
Package Includes
- 1 × MY6812 12V 120W 3350RPM Brushed DC Motor
Product Specifications
| Parameter | Specification |
|---|---|
| Product Type | DC Electric Motor |
| Model Number | MY6812 |
| Motor Type | Brushed DC Motor |
| Operating Voltage | 12V DC |
| Operating Power | 120W |
| Rated Current | 7A |
| Rated Speed | 3350RPM |
| Rated Torque | 4.58kg-cm (approximately 0.45N·m) |
| Gearbox | No integrated gearbox |
| Efficiency | 72–75% (supplier-listed) |
| Motor Body Length | 120mm |
| Motor Body Diameter | 68mm |
| Connection Cable Length | 25cm (250mm) |
| Rotation Direction | Reversible by changing motor power connection polarity, subject to controller compatibility |
| Compatible Controller Type | 12V brushed DC motor controller |
| Motor Weight | 1.06kg |
| Package Quantity | 1 Motor |
Connection & Operating Recommendations
For correct integration, match the motor with a compatible 12V brushed DC controller and verify the mechanical coupling before installation. The listed rated current, speed and torque should be considered together when selecting the power supply, controller and drivetrain components.
- Use a Brushed DC Controller: Select a controller designed for brushed DC motors and suitable for 12V operation.
- Account for Current Demand: Use the 7A listed rated current as a reference, but also consider startup current and load-dependent current when selecting the controller and wiring.
- Match the Power Supply: Use a suitable 12V DC source with adequate current capability for the intended operating conditions.
- Check the Shaft Interface: Confirm the shaft dimensions and profile against the selected coupling, pulley, sprocket or other transmission component before fitting.
- Plan External Reduction: Since the motor has no integrated gearbox, use an appropriately designed transmission if the application requires lower speed or increased torque at the driven component.
- Confirm Rotation Direction: Follow the controller’s wiring instructions when changing motor polarity to obtain the required direction.
- Protect the Connection Cable: Route the 25cm cable away from moving components, sharp edges and excessive pulling or bending.
- Provide Secure Mounting: Support the motor using a mounting arrangement suitable for its cylindrical body and the mechanical loads of the application.
- Test Before Loaded Operation: Check rotation, controller response and mechanical alignment under controlled conditions before operating the complete equipment.
