Planetary micro-gearbox RP16

coaxialsolid-shaft0 - 0.1 Nm

Product overview
RP16 is a 16 mm planetary gear motor / gearbox by KWC Motor designed for space‑constrained devices such as smart locks, optical instruments and precision medical equipment. It features a metal planetary train with a powder‑metal internal ring gear and multi‑stage ratios from 1:4 to 1:509, with rated torque up to 0.30 N·m and momentary torque up to 0.90 N·m.

Key facts for engineering buyers

• Product category: Planetary gear motor / gearbox
• Model: RP16
• Manufacturer: KWC Motor (Dongguan KWC Machinery Co., Ltd.)
• Typical applications: Smart door locks, optical instruments, precision medical equipment, miniature actuators

Specification highlight

• Outer diameter: 16 mm

Customization & sourcing notes
KWC Motor supports OEM/ODM customization for voltage, speed, torque, shaft type, connector/cable, gearbox integration and acoustic/EMC targets. Lead time and pricing depend on confirmed specifications, quantity and customization scope.

Core applications & solutions
Smart security & electronic locks
Compact 16 mm form factor fits lock bodies for residential fingerprint locks, safe locks and hotel locks. Momentary anti‑tamper torque up to 0.9 N·m supports reliable bolt actuation.

Precision instruments & robotics
Suitable for micro robot joints, infusion/syringe pumps and optical adjustment mechanisms. Multi‑stage planetary options enable fine speed control and smooth torque output.

RP16 gearbox technical specifications
Gear Ratio | Stages | Length L (mm) | Rated torque | Max momentary torque | Efficiency
1/4 ~ 1/6 | 1 | 12.3 ±0.5 | 0.03 N·m (0.3 kg·cm) | 0.09 N·m | 90%
1/16 ~ 1/36 | 2 | 15.9 ±0.5 | 0.12 N·m (1.2 kg·cm) | 0.36 N·m | 81%
1/64 ~ 1/216 | 3 | 19.5 ±0.5 | 0.24 N·m (2.4 kg·cm) | 0.72 N·m | 73%
1/256 ~ 1/509 | 4 | 23.1 ±0.5 | 0.30 N·m (3.0 kg·cm) | 0.90 N·m | 66%

Specification notes
* Gearbox outer diameter: 16 mm.
* Internal ring gear material: powder metal.
* Maximum output shaft radial load: ≤ 5 N.

Quality, materials and options

• Internal ring gear produced by powder metallurgy for high strength and wear resistance.
• Typical bearings: sleeve bearings; radial backlash ≤ 0.08 mm.
• Output shaft options: D‑shaft, threaded shaft, double‑flat shaft.
• Motor compatibility: miniature DC motors 3 V–12 V.
• Available lubrication: wide‑temperature grease (-15°C to +80°C).
• 100% noise and no‑load current testing; RoHS / REACH compliant.

Purchase & development FAQ

• Q: How is pricing determined? Pricing depends on application, specifications, quantity and customization; contact for a quote.
• Q: Are samples and drawings available? Yes — evaluation samples, outlines and specification sheets can be provided on request.
• Q: Can RP16 replace an existing motor-gearing solution? Replacement evaluation is possible — share dimensions, shaft type, voltage, speed and load profile for assessment.

Technical characteristics / specifications

• Model: RP16
• Product category: Planetary gear motor / gearbox
• Manufacturer: KWC Motor (Dongguan KWC Machinery Co., Ltd.)
• Outer diameter: 16 mm
• Internal ring gear material: powder metal (powder metallurgy)
• Gear ratio ranges: 1:4 to 1:509 (shown ranges: 1/4~1/6, 1/16~1/36, 1/64~1/216, 1/256~1/509)
• Stages available: 1, 2, 3, 4
• Length L (mm) by stages: 12.3 ±0.5, 15.9 ±0.5, 19.5 ±0.5, 23.1 ±0.5
• Rated torque by stage: 0.03 N·m, 0.12 N·m, 0.24 N·m, 0.30 N·m
• Max momentary torque: up to 0.90 N·m
• Efficiency by stage: 90%, 81%, 73%, 66%
• Maximum output shaft radial load: ≤ 5 N
• Radial backlash: ≤ 0.08 mm
• Bearings: sleeve bearings
• Motor voltage compatibility: 3 V–12 V
• Output shaft options: D‑shaft, threaded shaft, double‑flat shaft
• Lubrication option: wide‑temperature grease (-15°C to +80°C)
• Quality: 100% noise and no‑load current testing; RoHS / REACH compliant
• Customization: OEM/ODM support for voltage, speed, torque, shaft design, connectors, gearbox integration, control and EMC/noise targets