Product Description
Product Details of DC Motor
1. Basic Parameters
Rated Voltage:
Common specifications: 1.5V, 3V, 6V, 12V, 24V, 48V, etc. (Low-voltage for small motors, 24V+ for industrial applications).
Example: A toy motor may require 3V, while an industrial servo motor uses 48V.
Rated Power:
Range: From milliwatts (e.g., micro fans) to tens of kilowatts (e.g., electric vehicle drives).
Unit: Watts (W) or Horsepower (HP, 1HP ≈ 746W).
Rated Speed:
Typical range: Several hundred RPM to tens of thousands RPM (e.g., high-speed spindle motors).
Example: Common DC motors run at 1,000-3,000 RPM, while drone motors can exceed 10,000 RPM.
Rated Current:
Calculated by: Current (A) = Power (W) ÷ Voltage (V).
Note: Starting current is typically 2-5 times the rated current.
2. Mechanical Parameters
Torque:
-
- Rated Torque: Output torque under rated load (Unit: N·m or kg·cm).
- Starting Torque: Maximum torque at startup, usually higher than rated torque.
Application: High-torque motors suit heavy-load scenarios like hoists.
-
Shaft Diameter & Length:
Common shaft diameters: 2mm (micro motors) to 50mm (industrial motors).
Example: A micro motor might have a 3mm diameter shaft, 8mm long.
Mounting Dimensions:
Includes motor diameter, length, and base hole spacing for equipment installation.
3. Electrical Characteristics
Efficiency:
Typically 50%-90%, with permanent magnet motors exceeding 85%.
Speed Regulation Range:
Achieved via PWM (Pulse Width Modulation) or voltage adjustment, often 10:1 (e.g., 100-1,000 RPM).
Insulation Class:
Common classes: B (130°C), F (155°C), H (180°C). High-temperature environments require higher ratings.
4. Structure & Materials
Types:
-
- Permanent Magnet DC Motors: Use permanent magnets (e.g., neodymium) for compact size and high efficiency.
- Brushed DC Motors: Feature carbon brushes for commutation, cost-effective but with limited lifespan.
- Brushless DC Motors (BLDC): Electronically commutated, offering longer life and higher speeds.
-
Protection Class (IP Rating):
Examples: IP44 (dust & splash-proof), IP65 (dust-tight & water jet-resistant). Outdoor use requires higher ratings.
5. Performance Curves
Speed-Torque Curve:
Describes speed changes under varying loads (permanent magnet motors typically show linear decline).
Efficiency Curve:
Shows efficiency across different load rates, peaking at 75%-100% load.
6. Applications
- Consumer Electronics: Toys, toothbrushes, fans, shavers.
- Industrial Equipment: Conveyors, mixers, hoists, machine tool spindles.
- Transportation: Electric vehicles, wheelchairs, power tools.
- Automation: Robotic joints, servo systems, precision positioning devices.
7. Complementary Components
Drives:
-
- Brushed motors: Simple speed controllers or PWM modules.
- Brushless motors: Require dedicated ESC (Electronic Speed Controllers).
-
Gearboxes:
Reduce speed and increase torque (e.g., planetary or worm gear types).
8. Selection Guide
- Choose power and torque with 20%-30% margin for load fluctuations.
- High-temperature or wet environments demand higher IP and insulation ratings.
- Brushless motors are ideal for frequent starts/stops or precise speed control.
Sample Product Specifications
| Parameter |
Micro DC Motor (Toy) |
Industrial Servo Motor (Robot) |
| Rated Voltage |
3V |
48V |
| Rated Power |
5W |
500W |
| Rated Speed |
3,000 RPM |
3,000 RPM |
| Rated Torque |
0.016 N·m |
1.6 N·m |
| Motor Type |
Permanent Magnet |
Brushless Permanent Magnet |
| Protection Class |
IP20 |
IP65 |
| Efficiency |
60% |
90% |
Product Parameters
After Sales Service
Application of PM motor in the transformation of a ball milling machie in a certain factory
PM motor TYP280S-75kW replace the original motor Y280S-4-75kW.
According to the comparison of on-site operation results, the energy-saving rate is 8%, the operation is stable, and the customer feedback is good.
Packaging & Shipping
FAQ
1.Are you a factory?
Yes,we have our own factory for manufacturing and we have the long history in this field as the China top brand.
2.Can you provide free sample?
Yes, we can provide samples in our stock for free, customer just need to bear the shipping fee.
3. Hhow about the quality guarantee ?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
Audited Supplier 
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