16P 16 mm Planetary Gearbox - Technical Datasheet v1.0¶
Status: Public engineering evaluation reference
Release date: 2026-10-06
The SigGear 16P is a 16 mm planetary gearbox platform with one- to four-stage configurations. Performance values below are consolidated from the current canonical product page. Mechanical-interface details are linked to the controlled 2D drawing reference released for this model.
Key Specifications¶
| Parameter | Public value |
|---|---|
| Nominal outer diameter | 16 mm |
| Number of stages | 1-4 |
| Gearbox length range | 17.55–30.45 mm |
| Reduction ratio range | 3.85:1–459.5:1 |
| Rated allowable torque range | 4.0–9.0 kgf·cm |
| Maximum momentary torque range | 8.0–26.0 kgf·cm |
| Efficiency range | 66–90% |
| Backlash at no load | ≤ 1.5° |
| Continuous permissible input speed | ≤ 8,000 rpm |
| Operating temperature range | −40 to 120 °C |
Maximum momentary torque is not a continuous working rating.
Stage, Ratio and Performance¶
| Stages | Gearbox body length L | Available ratios | Rated allowable torque | Maximum momentary torque | Efficiency |
|---|---|---|---|---|---|
| 1 | 17.55 mm | 3.85 / 4.33 / 4.63 | 4.0 kgf·cm | 8.0 kgf·cm | 90% |
| 2 | 21.85 mm | 14.8 / 16.7 / 17.8 / 18.7 / 20 / 21.4 | 5.0 kgf·cm | 10.0 kgf·cm | 80% |
| 3 | 26.15 mm | 57.1 / 64.2 / 68.6 / 72.2 / 77.2 / 81.2 / 82.5 / 86.8 / 92.8 / 99.25 | 7.0 kgf·cm | 20.0 kgf·cm | 73% |
| 4 | 30.45 mm | 219.7 / 247 / 264.2 / 277.9 / 297.2 / 312.55 / 317.75 / 334.2 / 351.5 / 357.4 / 375.9 / 382.1 / 401.9 / 429.8 / 459.5 | 9.0 kgf·cm | 26.0 kgf·cm | 66% |
Published Load / Shaft Limits¶
| Parameter | Public value |
|---|---|
| Radial load, 10 mm from flange | ≤ 1.6 kgf |
| Shaft axial load | ≤ 0.5 kgf |
| Radial shaft play | ≤ 0.04 mm |
| Thrust shaft play | ≤ 0.2 mm |
Only values currently published for 16P are shown. Do not transfer limits from another frame size.
Motor Matching Reference¶
- Adapted DC motor nominal voltage: 3–36 VDC
- Adapted DC motor power: below 10 W
These are motor-matching conditions, not electrical ratings of the mechanical gearbox.
Mechanical Interface and CAD¶
View 16P Mechanical Interface v1.0
Download 16P Simplified STEP - 4-Stage Reference
A simplified public 4-stage STEP reference is released for early packaging and mechanical Design-In. The detailed full-assembly STEP remains configuration-controlled and request-only because it contains internal planetary transmission geometry.
For final CAD, provide the selected ratio, stage count and motor interface.
Request CAD / Controlled Drawing
Selection Information Required¶
Please provide:
- Required output speed or reduction ratio
- Continuous and momentary output torque
- Motor voltage, power and speed
- Motor shaft diameter and length
- Motor mounting-hole pattern and locating pilot
- Output-shaft requirements
- Radial and axial loads
- Duty cycle and ambient temperature
- Backlash, noise and service-life targets
- Prototype and annual quantity
Related Product¶
Engineering Contact¶
Wanrong Wang
International Sales / Sales Engineer, SigGear
wangwanrong@siggear.com