RF-250 22mm Brush Carbon Motor 1500rpm-13000rpm High Speed Mute Motor For Smoke Vents

RF-250 22mm Brush Carbon Motor 1500rpm-13000rpm High Speed Mute Motor For Smoke Vents

RF-250 Metal Brush Motor DC Technical Parameters

• Motor Name/Type:RF-250SH-13320 Mini motor
• Rated Voltage: 12.0VDC
• Staring Voltage:1.5V
• Operating Volt:11v-13V
• Rated Load Torque:60g.cm
• No-load Current: 55mA max
• No-load Speed: 5400±540r/min
• Rated Load Speed:3500±350r/min
• Rated Load Current:420mA
• At Maximum Efficiency Speed: 4548r/min
• At Maximum Current:0.152A max
• At Maximum Torque:2.688mN.m
• At Maximum Output: 1.19 w
• At Maximum Efficiency:65.5%
• Stall Current: 0.796A 
• Stall Torque:16.77mNm
• At Maximum Power Output
  • Output:2.218w
  • Torque:8.385mN.m
  • Speed:2913rpm
  • Current:0.38A
• Body Size: 30.5mm x 22mm (L*D)
• Shaft Size: 2mm diameter
• Weight: 38 grams
• Operating Temperature: -20°C ~ +70°C
• Storage Temperature Range:-30°C ~ +80°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

9.Notes
   1. Usable machine screw | ength 1. 0max. from motor mounting surface.
   2. Allowable torque for screwing of tapped hole:2. 5kgf-cm max.
   3. No remarkable scraches on dents on the surface.
   4. Tolerances not otherw ise specified decimal:土0.3mm.

 

RK-250 DC Motor 22mm Mini Motor TN Curve

RF-250 DC Motor: The Optimal Drive Solution for Emergency Smoke Ventilation Systems

Key Technical Specifications

• Brand: HCS Motor/Lihua Motors

• Type: Brushed DC Motor 

• Certification: ISO9001/CE/Rohs /Reach

• Customization: Available

• Rated Power: 5W

• Voltage Range: 6.0V~28.0V (12V constant voltage recommended)

• Speed: 5000 RPM (rated), 7500 RPM (max)

• Torque: 0.006 Nm (rated), 306 g-cm (stall)

• Efficiency: 80% (peak efficiency at 7321 RPM, 0.47A, 4.83 g-cm)

• Response Time: ≤2S braking

• Dimensions: Ø22mm × 30.5mm

• Weight: 60g

• Insulation Class: F

Why RF-250 Excels in Smoke Ventilation?

1. Instant Emergency Activation

   • Achieves full speed in seconds, ensuring rapid window opening for smoke extraction.

   • High stall torque (306 g-cm) overcomes initial resistance in window mechanisms.

2. Robust Design for Critical Environments

   • Wide voltage tolerance (6V–28V) guarantees operation during voltage fluctuations.

   • Class F insulation withstands high temperatures in fire scenarios.

3. Smart System Integration

   • Compatible with fire alarm interfaces for automated triggering.

   • Low standby current (0.47A at peak efficiency) reduces energy waste.

4. Compact & Lightweight

   • Minimal space requirements (22mm diameter) for retrofit installations.

   • Aluminum housing enhances heat dissipation in continuous duty cycles.

Typical Applications

• Industrial: Factory skylights, warehouse vents

• Commercial: Shopping mall atriums, office building smoke shafts

• Public Spaces: Hospitals, stadiums, subway stations

• High-Rise Buildings: Complies with international smoke control standards

Performance Comparison

Note: Custom winding options available for specific voltage/speed requirements. Third-party fire safety certifications (UL/EN) can be provided upon request.

For critical life-safety applications, the RF-250's blend of rapid response, compact size, and fault-tolerant design makes it the preferred choice for modern smoke ventilation systems.

As a trusted supplier of small dc gear motor solutions, Lihua Motor manufactures high-quality mini dc motor with gearbox assemblies for industrial and consumer applications. Our small worm gear motor series delivers reliable torque output with customizable speed and voltage options to meet OEM requirements.