RK-250 22mm High Speed High Torque DC Motor Brush Carbon Motor For Actuator 3-12V

RK-250 Carbon Brush Motor DC Technical Parameters

• Motor Name/Type:RK-250 Mini motor
• Rated Voltage: 9.0VDC
• No-load Current: 75mA max
• No-load Speed: 6200±310 rpm
• At Maximum Efficiency Speed: 5041r/min
• At Maximum Current: 0.266A max
• At Maximum Torque: 3.219mN.m
• At Maximum Output: 1.54 w
• At Maximum Efficiency:64.2%
• Stall Current: 1.34A
• Stall Torque:19.4 mN.m
• At Maximum Power Output
  • Output:2.781w
  • Torque:9.702mN.m
  • Speed:3270rpm
  • Current:0.64A
• Body Size: 30.5mm x 22mm (L*D)
• Shaft Size: 2mm diameter
• Weight: 38 grams
• Operating Temperature: -10°C ~ +60°C
• Direction of Rotation:CCW

RK-250 High Speed Brush Carbon Motor Dimension

RK-250 Micro Motor Dimension Information
1.Motor Shell Size:22mm Diameter*30.5 Length (Length without output shaft length)
2.Front Step Diameter:6mm
3.Front Step Height:1.5mm
4.Output Shaft Length:20mm/6mm/9mm/10mm or Custom
5.Terminal Distance:15.2mm
6.Mounting Screw Holes Distance:14mm
7.Screw Holes Size:2*0.4mm

8.Terminal Height:2.5mm

RK-250 DC Motor 22mm Mini Motor TN Curve

Applications of RK-250 Motor in Smart Automation Systems

The RK-250 motor serves as a versatile drive solution across multiple automation sectors, delivering reliable performance in critical applications:

1. Motorized Curtain Systems

• Voltage compatibility: 6.0V-28.0V DC

• Silent operation (<40dB) with smooth speed regulation

• Integrated position feedback for precise curtain control

• IP54-rated options available for humidity-prone environments

2. Emergency Smoke Ventilation

• Instant activation (response time <0.5s)

• High starting torque (up to 800mN·m) for rapid window opening

• Fail-safe design ensures operation during power outages

• Certified for EN 12101-2 smoke control standards

3. Smart Building Integration

• IoT-ready with RS485/Modbus communication options

• Compatible with KNX, DALI, and BACnet protocols

• Programmable limit switches for automated positioning

• Energy-efficient operation (standby power <0.5W)

Technical Advantages:

• Dual-bearing structure enhances lifespan (>50,000 cycles)

• Optional encoder feedback (12-bit resolution)

• Wide temperature range (-20°C to +60°C)

• Compact design (Ø25mm × L50mm) for space-constrained installations

Industry Certifications:

• CE, RoHS compliant

• UL1004-1 recognized (pending)

• REACH chemical compliance

The RK-250's combination of robust construction and smart features makes it ideal for modern automated environments requiring both reliability and connectivity. Custom configurations available for specific voltage, torque, or communication requirements.