Planetary micro-gearbox RP22

coaxialsolid-shaft0 - 0.1 Nm

Product Overview
RP22 is a 22 mm planetary gear motor / gearbox designed for applications such as motorized curtains, precision medical instruments and automation equipment. It uses powder‑metal gears and an optimized bearing support structure to provide higher radial/axial load resistance and long-term stability in continuous operation. Outer diameter: 22 mm; shaft diameter: 4 mm; output-shaft press-fit capacity up to 50 N.

Key Facts for Engineering Buyers

• Product category: Planetary Gear Motors & Gearboxes
• Motor family: Planetary Gear Motor / Gearbox
• Brand / manufacturer: KWC Motor, Dongguan KWC Machinery Co., Ltd.
• Typical applications: electric curtains, smart locks, precision medical devices, automation equipment

Specification Signals

• Diameter: 22 mm
• Shaft diameter: 4 mm

Customization and Sourcing Notes
KWC Motor supports OEM/ODM customization for voltage, speed, torque, shaft design, cable or connector requirements, gearbox integration, control options, and noise/EMC targets. Final pricing requires confirmation of application, specifications, quantity and customization details.

Core Applications & Solutions

• Smart Home & Motorized Curtains: Designed for motorized blinds, tubular motors and automatic door locks. Powder‑metal gear construction supports low-noise operation and tensile loads during curtain lifting/lowering.
• Medical Devices & Automation: Suitable for precision infusion pumps, surgical instruments and compact robotic arms. Axial load capability (max 6 N) supports lead‑screw, push‑rod and small linear actuator applications.

RP22 Gearbox Technical Specifications
Data source: KWC RP22 datasheet. Compatible with 22 mm series brushed or brushless DC motors.
Gear Ratio | Stages | Length L (mm) | Rated Torque | Max Momentary Torque | Efficiency
1/4 ~ 1/6 | 1 | 14.4 ±0.5 | 0.03 N·m | 0.09 N·m | 90%
1/16 ~ 1/24 | 2 | 17.9 ±0.5 | 0.12 N·m | 0.36 N·m | 81%
1/64 ~ 1/107 | 3 | 21.4 ±0.5 | 0.24 N·m | 0.72 N·m | 73%
1/256 ~ 1/509 | 4 | 24.9 ±0.5 | 0.30 N·m | 0.90 N·m | 66%

Mechanical Parameters
Gearbox outer diameter: 22 mm. Shaft diameter: 4 mm. Maximum output‑shaft radial load: 8 N. Maximum axial load: 6 N. Maximum press‑in (press‑fit) force: 50 N.

Why Choose the KWC RP22 Planetary Gearbox?

• Powder‑metal gears and optimized bearing support for improved impact resistance and press‑fit capacity up to 50 N.
• Flexible customization to match 22 mm brushed motors (e.g., RS‑2230) or brushless motors; output shaft options: D‑shaft, threaded shaft, knurled shaft; optional greases for low (‑15°C) or high (+80°C) temperature environments.
• Precision assembly with radial backlash controlled within 0.08 mm; RoHS / REACH compliant.

Purchasing Notes
Recommended maximum motor input speed: keep below 8,000 rpm to avoid accelerated grease depletion and gear wear. Higher‑speed applications may require customized lubrication solutions.

Technical Characteristics / Specifications

• Model: RP22
• Outer diameter: 22 mm
• Shaft diameter: 4 mm
• Available gear reduction ratios: 1/4 to 1/509 across 1 to 4 stages
• Length L by stage: 1‑stage 14.4 ±0.5 mm; 2‑stage 17.9 ±0.5 mm; 3‑stage 21.4 ±0.5 mm; 4‑stage 24.9 ±0.5 mm
• Rated torque by ratio group: 0.03 N·m; 0.12 N·m; 0.24 N·m; 0.30 N·m
• Max momentary torque by ratio group: 0.09 N·m; 0.36 N·m; 0.72 N·m; 0.90 N·m
• Efficiency by ratio group: 90%; 81%; 73%; 66%
• Maximum output‑shaft radial load: 8 N
• Maximum axial load: 6 N
• Maximum press‑in force: 50 N
• Material: powder‑metal gears
• Compatibility: designed for 22 mm brushed or brushless DC motors
• Output shaft options: D‑shaft, threaded shaft, knurled shaft
• Environmental grease options: low‑temperature (‑15°C) or high‑temperature (+80°C)
• Radial backlash: ≤ 0.08 mm
• Regulatory: RoHS / REACH compliant