Brushless motor RB-2838-68 series

BLDC24 V12 V

Product Overview
RB-2838-68 is a 28 mm class Brushless DC Motor (BLDC) from KWC Motor. The design features a 37.6 mm extended body to increase magnetic circuit and winding space, enabling higher torque outputs for compact precision drives.

Key Facts for Engineering Buyers

• Product category: Brushless DC Motors
• Motor family: RB-2838-68 series (BLDC)
• Brand / manufacturer: KWC Motor, Dongguan KWC Machinery Co., Ltd.
• Typical applications: electric curtains, vacuum pumps, power tools, small pumps and home appliances

Specification Signals

• Diameter: 28 mm
• Body Length: 37.6 mm
• Torque: up to ~103.7 g·cm (depending on variant)

Customization and Sourcing Notes
KWC Motor supports OEM/ODM customization for voltage, speed, torque, shaft design, cable or connector options, gearbox integration, control requirements, and EMC/noise targets. Final pricing and performance are confirmed after specifying application, exact requirements, quantity, and any pre-assembly needs. Shaft length, mounting pattern, and EMC countermeasures can be adapted to project requirements.

Target Applications & Solutions

• Smart Home & Home Appliances: motorized curtains, handheld vacuums, blenders, hair dryers and other appliances where compact high-torque drives reduce or eliminate the need for reduction gears.
• Medical & Industrial Power: surgical power tools, medical micro pumps, vacuum pumps, electric valves and handheld electric screwdrivers — suitable where compact size and reliable torque are required.

Technical Specifications
Data source: KWC RB-2838-68 datasheet. Deep customization available for voltage, speed, and shaft length.
Model | Operating Voltage Range | Nominal Voltage | No-Load Speed | Max Efficiency Speed | Max Efficiency Torque | Output (at Max Efficiency)
RB-2838-68-N-01 | 3.5V - 4.2V | 3.7V | 7800 rpm | 6788 rpm | 76.0 g·cm | 5.3 W
RB-2838-68-N-02 | 9.0V - 14.0V | 12.0V | 3570 rpm | 2911 rpm | 50.7 g·cm | 1.5 W
RB-2838-68-N-03 | 19.0V - 26.0V | 24.0V | 6370 rpm | 4845 rpm | 103.7 g·cm | 5.1 W
RB-2838-68-N-04 | 6.0V - 12.0V | 7.2V | 5000 rpm | 4500 rpm | 100.06 g·cm | 4.63 W

Features / Specifications

• Model family: RB-2838-68
• Diameter: 28 mm
• Extended body length: 37.6 mm
• Typical max efficiency torque range: ~50.7 g·cm to ~103.7 g·cm across variants
• Operating voltage ranges: 3.5V–26.0V depending on variant (nominal 3.7V, 7.2V, 12.0V, 24.0V)
• No-load and efficiency speeds vary by variant
• Output at max efficiency: ~1.5 W to ~5.3 W depending on variant
• OEM/ODM customization available: voltage, speed, torque tuning; shaft length and type; mounting patterns; optional pre-assembly of gears, encoders, and lead wires/terminals; EMC and noise targets