Stepping Motors28MMMM PLANETARY
28mm Diameter Planetary Gearbox
The 28mm Diameter Planetary Gearbox is available from Source Engineering Inc. in Santa Clara, CA for OEM stepping motors programs. Contact us for sizing, customization, samples, and volume pricing.
28mm Diameter Planetary Gearbox
Features:
- NEMA 11 Stepping motor
- Gear Ratios from 4:1 up to 139:1
- Rated Output Torque up to 3.9NM (555 oz-in)
Gear Box Data
| Reduction Ratio | X:1 | 3.71 | 5.18 | 13.764 | 19.217 | 26.832 | 51.065 | 71.298 | 99.548 | 138.99 |
|---|---|---|---|---|---|---|---|---|---|---|
| Number of gear trains | # | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 3 |
| Max Permissible Torque | kg.cm | 20 | 20 | 30 | 30 | 30 | 40 | 40 | 40 | 40 |
| Moment Permissible Torque | kg.cm | 40 | 40 | 50 | 50 | 50 | 60 | 60 | 60 | 60 |
| Gear Box Length | mm | 27.2 | 27.2 | 35 | 35 | 35 | 42.7 | 42.7 | 42.7 | 42.7 |
Motor Specifications
| Model | Step Angle | Length (Ld) | Phase Voltage | Phase Current | Phase Resistance | Phase Inductance | Holding Torque | Lead Wire |
|---|---|---|---|---|---|---|---|---|
| ° | mm | V | A | Ω | mH | g.cm | # | |
| 28BYGH32-067-4A/B | 1.8 | 32 | 3.75 | 0.67 | 5.6 | 3.4 | 600 | 4 |
| 28BYGH32-095-6A/B | 1.8 | 32 | 2.66 | 0.95 | 2.8 | 0.8 | 430 | 6 |
| 28BYGH45-067-4A/B | 1.8 | 45 | 4.56 | 0.67 | 6.8 | 4.9 | 950 | 4 |
| 28BYGH45-095-6A/B | 1.8 | 45 | 3.22 | 0.95 | 3.4 | 1.2 | 750 | 6 |
| 28BYGH51-067-4A/B | 1.8 | 51 | 6.20 | 0.67 | 9.6 | 7.2 | 1200 | 4 |
| 28BYGH51-095-6A/B | 1.8 | 51 | 4.35 | 0.95 | 4.6 | 1.8 | 900 | 6 |
Replace □ with A = single shaft; replace □ with B = double shaft
Key Features
- 28mm Diameter Planetary Gearbox: OEM motion component configured for your application
- Custom shafts, windings, and mounts available
- US engineering support with overseas manufacturing cost structure
- Prototype to production volumes
Configuration Options
- Custom shafts, windings, encoders, and cable assemblies on request
- Prototype samples through production volumes
Downloads
Applications
- CNC and machine tools
- 3D printing
- Medical automation
- Semiconductor stages
- Packaging machinery
When to Choose This Model
Choose this stepping motor configuration when you need precise open-loop positioning with NEMA-standard mounting and configurable windings.
Frequently Asked Questions
What is the 28mm Diameter Planetary Gearbox used for?
The 28mm Diameter Planetary Gearbox is used in OEM motion-control applications. Contact us to match torque, speed, and mounting to your design.
Can you customize this model?
Yes. Shafts, windings, ratios, encoders, cables, and mounting interfaces can be customized for OEM programs.
How do I get pricing and lead time?
Request a quote with your quantity, target specs, and timeline. We typically respond within one business day.
Ready to spec your next motion system?
Talk to a Source Engineering application specialist. No obligations, just answers.