Brushless motor RB-4115-C8 series

BLDC6 V12 V

Product Overview
RB-4115-C8 is a 41 mm brushless DC motor (BLDC) with a low-profile outer-rotor design and a 30 mm flat body. It is designed for medical and precision equipment where compact integration, low noise and reliable performance are required, such as ventilators, oxygen concentrators and small pumps.

Key Facts for Engineering Buyers

• Product category: Brushless DC Motors (BLDC)
• Representative size: 41 mm
• Manufacturer: KWC Motor, Dongguan KWC Machinery Co., Ltd.
• Typical applications: ventilators, oxygen concentrators, medical pumps, compact centrifuges

Specification Signals

• Diameter: 41 mm
• Body length (flat): 30 mm
• Configuration: Outer-rotor, medical-grade options

Target Applications & Solutions

• Ventilators & Oxygen Concentrators: Low-profile outer-rotor provides higher inertia and BLDC low-noise operation to ensure stable, quiet airflow for home and medical ventilators and portable oxygen concentrators.
• Medical Pumps & Centrifuge Devices: Compact form factor simplifies integration into infusion pumps and small centrifuges while offering medical-grade reliability and consistent transient response.

Technical Specifications
Data source: KWC RB-4115-C8 specification sheet. Voltage, speed and shaft length are customizable.

Model | Operating Voltage Range | Nominal Voltage | No-Load Speed | Speed @ Max Efficiency | Torque @ Max Efficiency | Output Power
RB-4115-C8-N-01 | 9.0V – 16.0V | 12.0V | 2600 rpm | 2100 rpm | 663 g·cm | 15.0 W
RB-4115-C8-N-02 | 9.0V – 16.0V | 13.0V | 2800 rpm | 2300 rpm | 714 g·cm | 17.0 W
RB-4115-C8-N-03 | 6.0V – 26.0V | 18.0V | 2600 rpm | 2100 rpm | 663 g·cm | 15.0 W
RB-4115-C8-N-04 | 6.0V – 26.0V | 24.0V | 2600 rpm | 2100 rpm | 663 g·cm | 15.0 W

Customization and Sourcing Notes
KWC Motor supports OEM/ODM customization for operating voltage, speed, torque characteristics, shaft design (length, D-shaft or threaded), cable or connector options, gearbox or encoder integration, and EMC/noise targets. Performance parameters and mechanical interfaces can be adjusted after application review. Pricing is quoted after confirming specifications, quantity and customization requirements.

Comparison Highlights

• Form factor: Low-profile outer rotor (30 mm thickness) versus standard 41 mm motors with longer bodies.
• Torque dynamics: Fast transient response with high stall capability (series capability noted above).
• Operating noise: Ultra-low design targeted for ventilator applications.

Purchasing / Order Information

• MOQ: Flexible; samples available (1–5 pcs); pilot orders typically 100–500 pcs; mass production recommended from 1,000 pcs.
• Packaging: Industrial blister tray with reinforced outer cartons; palletized export packing available for large orders.
• Datasheet / Drawings: Product datasheet and outline drawings available on request.

Characteristics / Technical Summary

• Model: RB-4115-C8
• Motor type: Brushless DC Motor (BLDC), outer-rotor, medical-grade options
• Diameter: 41 mm (max optimized diameter up to φ45.5 mm)
• Body length: 30 mm (flat profile)
• Nominal voltages: 12V, 13V, 18V, 24V (variant dependent)
• No-load and max-efficiency speeds: approx. 2600–2800 rpm no-load; 2100–2300 rpm @ max efficiency
• Torque @ max efficiency: ~663–714 g·cm
• Output power: 15.0–17.0 W depending on variant
• Compliance & testing: RoHS/REACH inspection and noise/current testing per factory process