DC motor RS-3657ST

brushed12 V36 V

RS-3657ST Product overview
RS-3657ST is an extended-length 36 mm brushed DC motor (555/560 form factor, 57.0 mm body length) produced by KWC Motor. It supports typical input voltages from 12V to 24V (variants available from 3.0V up to 36.0V), delivers up to ~85 W depending on the variant, and provides high stall torque (>3.7 kg·cm in high-torque variants). Typical target applications include automotive electronic parking brake (EPB) actuators, electric tailgates, handheld power tools and high-power vacuum cleaners.

Key facts for engineering buyers

• Product category: Brushed DC motors
• Model designation: RS-3657ST (36 mm diameter, 57.0 mm body length)
• Manufacturer: KWC Motor (Dongguan KWC Machinery Co., Ltd.)
• Typical voltage range: 3.0V–36.0V (model-dependent); common series: 12–24V
• Common uses: automotive EPB, electric tailgates, cordless drills, high-power vacuum cleaners

Specification signals

• Diameter: 36 mm
• Body length: 57.0 mm (extended-length 555/560 form factor)
• Voltage: typical 12–24V (variants 3–36V)
• Output power: up to ~85 W (model dependent)
• Stall torque: examples >3.7 kg·cm (model dependent)

Customization and sourcing notes
KWC Motor supports OEM/ODM customization for voltage, speed, torque profile, shaft design (standard Ø3.175 mm; options: D-shaft, knurled), cable/connector termination, gearbox integration, encoder or control board integration, and EMC/EMI suppression components. Quotation requires confirmed application, electrical/mechanical specifications, quantity and any certification or packaging requirements.

Target applications & solutions
Automotive Electronic Parking Brake (EPB) and tailgates
Variants are engineered to provide high starting/stall torque and reliable repetitive operation required by EPB actuators and electric tailgate drives. Design attention should be given to thermal dissipation, duty cycle and EMC in the vehicle environment.

Power tools & high-power equipment
With extended rotor length and higher power headroom, RS-3657ST variants suit cordless drills, high-suction vacuum cleaners and similar equipment where sustained torque and thermal performance are critical. Choose the appropriate winding and bearings for requested duty and lifetime.

Technical specifications (example variants)
Model | Operating Voltage (Range) | Nominal Voltage | No-load Speed | Speed @ Max. Efficiency | Output Power | Stall Torque
RS-365735T-7030 | 3.0V – 12.0V | 4.8V | 6,300 rpm | 5,490 rpm | 20.6 W | 2835 g·cm
RS-36573ST-6035 | 12.0V – 18.0V | 18.0V | 21,400 rpm | 18,854 rpm | 85.7 W | 3722 g·cm
RS-365755T-5016 | 6.0V – 12.0V | 12.0V | 18,000 rpm | 15,224 rpm | 58.2 W | 2432 g·cm
RS-365755T-2774 | 12.0V – 36.0V | 24.0V | 7,800 rpm | 6,758 rpm | 20.9 W | 2252 g·cm

Notes
Shaft diameter standard: 3.175 mm. Body length: 57.0 mm. D-shaft, knurled shaft and embedded EMC components (varistor/capacitor) available on request. High-voltage and high-torque optimizations are possible for specific variants.

Characteristics / Technical specifications (summary)

• Model family: RS-3657ST (36 mm diameter, extended 57 mm body)
• Voltage range: model dependent, typical series 12–24V
• Output: up to ~85 W depending on variant
• Speeds and torques: model-dependent; examples provided above
• Shaft: Ø3.175 mm standard; D-shaft and knurled options
• Customization: voltage/speed/torque tuning, shaft & connector design, gearbox/encoder integration, EMC suppression
• Testing & quality: 100% stall/load-curve testing; ROHS/REACH compliant materials