DC gear-motor RP38RC-39605DC

direct currentplanetarygear train

Product Overview
RP38RC-39605DC is a 38 mm planetary gear motor / gearbox manufactured by KWC Motor (Dongguan KWC Machinery Co., Ltd.). Designed primarily for Electric Power Steering (EPS) applications, it is a 12 V DC unit offering up to 18.1 N·m stall torque in selected variants and configurable output shaft options.

Key Facts for Engineering Buyers

• Product category: Planetary Gear Motors & Gearboxes
• Motor family: RP38RC series planetary gear motor / gearbox
• Brand / manufacturer: KWC Motor, Dongguan KWC Machinery Co., Ltd.
• Typical applications: EPS systems, ATV/UTV steering, agricultural auto-steering retrofits, heavy 12 V actuators

Specification Signals

• Diameter (gearbox/main body): ~38 mm (max OD gearbox 42.5 mm)
• Rated voltage: 12.0 V DC (typical)

Customization and Sourcing Notes
KWC Motor supports OEM/ODM customization for voltage (including 24 V on request), speed/torque via winding changes, shaft design (splined or double-D), cable and connector options, gearbox integration and EMC/noise targets. Final pricing and lead time are confirmed after application review, specification agreement and order quantity confirmation.

Core Applications & Solutions

• Electric Power Steering (EPS): Suitable for passenger cars, low-speed EVs and golf carts. Fast response and predictable assist behaviour for steering systems.
• Specialty Vehicles & Agricultural Machinery: Common in ATV/UTV steering, retrofit autopilot steering for agricultural equipment and heavy automatic gates where high locked-rotor torque and shock resistance are required.
• Industrial 12 V Actuation: Applicable where compact, low-speed high-torque 12 V drives are needed.

Performance Specifications
Data source: KWC RP38RC-39605DC datasheet. Test voltage: 12.0 V DC (room temperature).

• Example variants and key figures:
• RP38RC-3960-56-DJ01 — Rated Voltage 12.0 V; No-load Speed 88 rpm; No-load Current 0.5 A; Torque @ Max Efficiency 2.8 N·m; Speed @ Max Efficiency 70 rpm; Stall Torque 18.1 N·m
• RP38RC-3960-56-DJ02 — Rated Voltage 12.0 V; No-load Speed 140 rpm; No-load Current 0.6 A; Torque @ Max Efficiency 2.4 N·m; Speed @ Max Efficiency 100 rpm; Stall Torque 13.7 N·m
• RP38RS-3657-75-103 — Rated Voltage 12.0 V; No-load Speed 145 rpm; No-load Current 1.2 A; Torque @ Max Efficiency 2.7 N·m; Speed @ Max Efficiency 117 rpm; Stall Torque 4.1 N·m

Mechanical Notes
Overall motor length approx. 145.5 mm. Gearbox maximum outer diameter 42.5 mm; main body ~38 mm. Output shaft geometry can be customized to application requirements.

Why Choose a KWC EPS Geared Motor?

• Automotive-oriented design: EMC/EMI suppression options and materials suitable for extended temperature ranges (custom grease options enabling -40°C to +85°C).
• Flexible customization: Winding and ratio options (DJ01/DJ02 variants), shaft types (splined or double-D), waterproof connectors and tailored lead lengths.
• Quality and reliability: Reinforced metal geartrain for shock resistance and 100% outgoing inspection including load and noise testing.

Purchasing FAQ (summary)

• Main application: Primarily EPS; also used in ATV/UTV steering, agricultural retrofit steering and 12 V high-torque actuators.
• Meaning of stall torque 18.1 N·m: Locked-rotor torque capability useful to overcome steering system friction and transient loads.
• 24 V option: Available via winding redesign for truck or industrial power systems; requires specification review.

Characteristics / Technical Specifications

• Model family: RP38RC series
• Example model: RP38RC-39605DC (12 V DC planetary gear motor for EPS)
• Rated voltage: 12.0 V DC
• Diameter: ~38 mm (gearbox max OD 42.5 mm)
• Overall motor length: approx. 145.5 mm
• Stall torque (peak): up to 18.1 N·m (DJ01)
• No-load speed examples: 88 rpm / 140 rpm / 145 rpm
• No-load current examples: 0.5 A / 0.6 A / 1.2 A
• Torque @ max efficiency examples: 2.4–2.8 N·m
• Operating temperature (possible with customization): -40°C to +85°C
• Customization: voltage, winding, shaft type, connector, gearbox integration, EMC/noise targets
• Mechanical notes: customizable output shaft; reinforced metal geartrain
• Quality: 100% outgoing inspection including load and noise tests