DC motor RS-2838ST series

brushed12 V24 V

Product Overview
RS-2838ST is a 28 mm class brushed DC motor developed for high power-density, battery-powered and consumer-electronics applications. Models in the RS-2838ST family feature a 37.8 mm body length and shaft diameter of 2.3 mm; variants cover wide operating voltages and outputs up to 20.2 W depending on model.

Key Facts for Engineering Buyers

• Product category: Brushed DC Motors
• Motor family: RS-2838ST series
• Manufacturer: KWC Motor (Dongguan KWC Machinery Co., Ltd.)
• Typical applications: high-performance fans, vacuum cleaners, electric hair clippers, RC models, small power tools

Specification Signals

• Diameter: 28 mm
• Body length: 37.8 mm
• Shaft diameter: 2.3 mm
• Operating voltage range (variant-dependent): 2.4 V – 24 V
• Output power: up to 20.2 W (model-dependent)

Target Applications & Solutions

• Battery-powered devices requiring high burst power (e.g., RC models, portable tools).
• High-speed fans, handheld vacuum cleaners and hairdryers—high stall torque enables driving high-resistance impellers.
• Consumer appliances and mass-production applications where compact size and high power density are required.

Customization and Sourcing Notes
OEM/ODM customization available for voltage, speed, torque, shaft design, cable/connector options, gearbox integration, control electronics and noise/EMC targets. Firm pricing provided after confirming application, specifications, quantity and customization requirements.

Customization Options and Mechanical Notes

• Winding optimization for burst-performance or efficiency tuning.
• Mechanical options: dual shafts, knurled shafts, M2.6 mounting holes, optimized ventilation patterns.
• Accessories: pre-soldered leads, capacitors and connectors available on request.

Technical Table (model / operating voltage / nominal voltage / no-load speed / speed @ max. efficiency / output power / stall torque)
Model | Operating Voltage | Nominal Voltage | No-load Speed | Speed @ Max. Efficiency | Output Power | Stall Torque
RS-2838ST-6016 | 2.4V – 4.8V | 3.6V | 20,500 rpm | 17,218 rpm | 20.2 W | 715 g·cm
RS-2838ST-3170 | 6.0V – 15.0V | 12.0V | 15,500 rpm | 13,350 rpm | 18.4 W | 968 g·cm
RS-2838ST-4540 | 3.0V – 9.0V | 7.2V | 16,800 rpm | 14,600 rpm | 16.5 W | 840 g·cm
RS-2838ST-20146 | 12.0V – 24.0V | 12.0V | 8,000 rpm | 6,674 rpm | 3.74 W | 329 g·cm

Additional Technical Notes
Shaft diameter: 2.3 mm; body length: 37.8 mm. Variants with dual shafts, knurled shafts and alternative brush materials are available. Series designed with optimized magnetic circuit and winding for high output at low voltage; suitable for higher current operation (approx. up to 8–10 A depending on version). Materials and production processes conform to ROHS/REACH where applicable.

Purchasing / Application FAQ (selected)

• ST vs SS series: ST is a high-output variant tuned for higher power and torque; ST can provide ~20 W at 3.6 V in specific variants.
• Battery suitability: Low-voltage, high-current variants (e.g., 3.6 V / 7.2 V) are suitable for lithium battery-powered products.
• High current handling: Designed for elevated currents (approx. 8A–10A depending on model) with high-quality brush systems for improved durability.

Technical specifications

• Series: RS-2838ST
• Diameter: 28 mm
• Body length: 37.8 mm
• Shaft diameter: 2.3 mm
• Operating voltage ranges: 2.4V–4.8V, 3.0V–9.0V, 6.0V–15.0V, 12.0V–24.0V (variant-dependent)
• Nominal voltages (examples): 3.6 V, 7.2 V, 12.0 V
• No-load speed (example): up to 20,500 rpm
• Output power (example): up to 20.2 W
• Stall torque (example): up to ~968 g·cm
• Customization: shaft types, brush materials, pre-soldered leads, capacitors, connectors, gearbox integration, winding tuning