DC Motor
Sunroad Motor manufactures custom brushed, brushless and application-specific DC motor products for OEM equipment. A suitable motor cannot be selected from voltage or rated power alone. The load point, power supply, operating sequence, duty cycle, mechanical interface, controller and validation conditions must be evaluated together. Use this page to choose the nearest product family and prepare the information required for project review.
Choose the DC Motor Product Family
Brushed DC Motors
A brushed DC motor can be evaluated when the project has a defined DC supply, load profile, control method, service requirement and operating environment. Selection still depends on starting and running conditions, permissible current, thermal limits, shaft and mounting details, direction changes and the complete duty cycle. Review the brushed DC motor category for the available product context.
Brushless DC Motors
A brushless DC motor project should be reviewed as a motor-and-controller system. Define the supply range, target speed and torque, controller type, feedback method, commutation strategy, wiring, protection logic, cooling and operating cycle. Review the brushless DC motor category before comparing model-level options.
Application-Specific DC Motor Categories
Hydraulic Power Unit Motors
Hydraulic power unit motor selection starts from the hydraulic operating point rather than motor wattage alone. Provide the required pressure and flow, pump displacement and estimated efficiency, starting condition, relief-valve behavior, electrical supply, current limit, run/rest cycle, mounting interface and thermal constraints. See the hydraulic power unit motor category.
Winch and Traction Motors
For a winch or traction project, define line pull or vehicle load, effective drum or wheel radius, rope layers, gearbox ratio and efficiency, target line or travel speed, incline, braking method, start frequency and the full pull/rest cycle. These inputs are needed to separate normal running load from short starting or peak conditions. See the winch and traction motor category.
Water Pump Motors
A water pump motor must be matched to the pump and the intended operating point. Provide the pump type, target flow and head, pump curve or sample, nominal and minimum supply voltage, starting behavior, continuous or intermittent duty, enclosure conditions, coupling and shaft requirements. See the water pump motor category.
Motors for Intelligent Furniture and Actuators
Furniture and actuator projects may require limits for force, travel, speed, noise, synchronization, duty cycle, control interface, mounting and user safety. The motor cannot be evaluated independently from the gearbox, screw, linkage, controller and operating sequence. See the intelligent furniture motor category.
Other OEM Applications
Sunroad Motor also groups application-specific products for film reeler equipment, automotive auxiliary equipment and other OEM applications. These category names are starting points, not substitutes for a controlled drawing, sample and load definition.
Information Required for Motor Selection
Prepare the following inputs where they apply to the project:
- Equipment application and a step-by-step operating sequence.
- Nominal voltage, minimum and maximum supply voltage, and available current limit.
- Required speed, torque and power at each important operating point.
- Starting, peak, stall, reversing and braking conditions, including time limits.
- Continuous or intermittent duty, run/rest timing, starts per hour and hot-restart requirement.
- Shaft, flange, pilot, mounting holes, envelope, orientation, wiring and connector requirements.
- Ambient temperature, water, dust, vibration, shock, noise and cooling conditions.
- Controller, feedback, sensor, protection and communication requirements.
- Existing drawing, sample, pump curve, gearbox data or measured load information.
- Prototype quantity, expected annual quantity and required project schedule.
- Market-specific compliance or validation requirements that must be reviewed.
If a required value is not yet known, identify it as open rather than replacing it with an estimate. This keeps the quotation assumptions visible and prevents a provisional value from becoming an unintended performance commitment.
A Practical OEM Project Evaluation Process
1. Define the application boundary
Describe what the equipment must do, the actual load sequence, the power source, the mechanical envelope and the environment. Separate continuous requirements from starting and short peak events.
2. Review the motor and driven system together
Check the motor with the pump, gearbox, drum, wheel, screw, fan or other driven component. Include controller limits, mechanical efficiency, load variation and protection behavior in the review.
3. Confirm the proposed interface
Align the shaft, flange, mounting, rotation direction, wiring, connector, feedback and installation constraints against a controlled drawing or approved sample.
4. Define prototype validation
Agree on the measurements and pass/fail conditions for voltage, current, speed, torque or application output, temperature, noise, starting, duty and any required environmental checks. Model-specific values should only be published after this evidence is approved.
5. Freeze the quotation basis
Record the approved configuration, quantity basis, assumptions, exclusions, validation responsibility and change conditions before release. A changed duty cycle, controller, pump, gearbox, mounting or compliance requirement may require a new review.
Request a Project Review
For selection articles and engineering checklists, visit the Sunroad Motor Blog. To request a project evaluation, send the available application description, electrical requirements, load data, duty cycle, drawings or samples and expected quantity through the contact page.
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