Planetary gear-motor RP38

coaxialkeyed bore5 - 10 Nm

Product Overview
RP38 is a 38 mm planetary gear motor / gearbox by KWC Motor designed for industrial automation, robotics and compact actuator applications. Standard ball-bearing output provides improved radial capacity (150 N) and axial support (80 N); rated torque up to 8.0 N·m with short-term peak up to 24 N·m.

Key Facts for Engineering Buyers

• Product category: Planetary Gear Motors & Gearboxes
• Motor family / model: RP38
• Manufacturer: KWC Motor, Dongguan KWC Machinery Co., Ltd.
• Typical applications: industrial automation, robotics, inspection equipment, medical rehabilitation actuators

Customization and Sourcing Notes

• OEM/ODM customization available for voltage, speed, torque, shaft type (D‑cut, keyway, threaded), cable/connector, gearbox integration and control electronics
• Pricing and lead times depend on confirmed specifications, quantities and customization requirements

Core Applications & Solutions

• Heavy-duty industrial automation: conveyors, automatic packaging machines, valve actuators — suitable where increased radial/axial loads and intermittent impact resistance are required.
• Robotics & specialty equipment: inspection robot drives, robotic arm joints, medical devices — momentary 24 N·m impact capacity helps protect mechanisms during collisions or emergency stops.

RP38 Gearbox Technical Specifications (from datasheet)
Gear Ratio | Stages | Length L (mm) | Rated Torque | Max Momentary Torque | Efficiency
1/4 ~ 1/6 | 1 | 30.0 | 0.8 N·m | 2.4 N·m | 90%
1/16 ~ 1/36 | 2 | 39.5 | 3.0 N·m | 9.0 N·m | 81%
1/64 ~ 1/216 | 3 | 49.2 | 6.0 N·m | 18 N·m | 73%
1/256 ~ 1/1296 | 4 | 58.7 | 8.0 N·m | 24 N·m | 66%

Mechanical Parameters
Gearbox outer diameter: 38 mm. Shaft diameter: 8 mm (D‑cut option: 7 mm). Output shaft supported by ball bearings. Maximum radial load: 150 N. Maximum axial load: 80 N. Typical radial backlash: ≤ 0.06 mm. Press-fit verification: shaft can withstand up to 120 N press-in force. Optional wide-temperature grease for −15°C to +80°C.

Characteristics / Technical Specifications

• Model / Series: RP38
• Diameter: 38 mm
• Shaft diameter: 8 mm (7 mm D‑cut option)
• Reduction ratio range: 1:4 to 1:1296 (depending on stages)
• Rated torque: up to 8.0 N·m (stage-dependent)
• Maximum momentary torque (impact): up to 24 N·m
• Maximum radial load: 150 N
• Maximum axial load: 80 N
• Typical efficiencies: 90% (1-stage), 81% (2-stage), 73% (3-stage), 66% (4-stage)
• Length L by stages: 30.0 / 39.5 / 49.2 / 58.7 mm
• Output shaft options: D‑cut, keyway, threaded
• Bearing support: standard ball bearings
• Radial backlash: ≤ 0.06 mm