20M020D Can Stack Stepper Mini Motor
20M020D
The 20M020D provides up to 1.55 oz-in (10.95 mNm) of holding torque in a 20 mm frame size. The neodymium magnets provide high power density for applications that need moderate torque in a small package. It is available in 5 or 12 volt windings, and in unipolar or bipolar designs.
Product Highlights
- Excellent open loop control - no encoder necessary
- Digitally controlled - easy to use with a micro processor
- Cost effective - compact design, lower integration cost
- Maintenance free - no brushes to replace
- Unipolar and bipolar winding options
Customization Available
- Ball bearings, clutch magnets, dampers
- Coil modifications - resistance and inductance
- Custom shafts - flats, knurling, diameter, length
- Magnets - to yield higher torque or reduced detent levels
- Mechanical integration upon request (housing, front & rear flange, shaft)
- Pinions and gears
- Wiring - connectors, lead length, shrink tubing
Applications
- Clinical Diagnostics
- Valve Actuation
- Pharmaceutical Dispensing
- Robotic Applications
- Antenna Positioning
- Printers and Copiers
- Switching Systems
| Part Number | 20M020D1B | 20M020D1U | 20M020D2B | 20M020D2U |
|---|---|---|---|---|
| Motor Diameter (in) | 0.807 | 0.807 | 0.807 | 0.807 |
| Motor Diameter (mm) | 20.5 | 20.5 | 20.5 | 20.5 |
| Standards Met | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant |
| Step Angle (degree) | 18 | 18 | 18 | 18 |
| Steps per Revolution | 20 | 20 | 20 | 20 |
| Ambient Operating Temperature Range (°C) | -20 to +70 | -20 to +70 | -20 to +70 | -20 to +70 |
| Ambient Operating Temperature Range (°F) | -4 to +158 | -4 to +158 | -4 to +158 | -4 to +158 |
| Nominal Voltage (V) | 5 | 5 | 12 | 12 |
| Rotor Inertia (gcm²) | 0.41 | 0.41 | 0.41 | 0.41 |
| Rotor Inertia (oz-in-sec² 10ˉ⁶) | 0.00224 | 0.00224 | 0.00224 | 0.00224 |
| Weight (g) | 24 | 24 | 24 | 24 |
| Weight (oz) | 0.83 | 0.83 | 0.83 | 0.83 |
| Absolute Accuracy 2 ph. On, Full Step (degree) | ± 1.5 | ± 1.5 | ± 1.5 | ± 1.5 |
| Coil Temperature, Max (°C) | 130 | 130 | 130 | 130 |
| Coil Temperature, Max (°F) | 266 | 266 | 266 | 266 |
| Detent Torque (mNm) | 3.53 | 3.53 | 3.53 | 3.53 |
| Detent Torque (oz-in) | 0.5 | 0.5 | 0.5 | 0.5 |
| Dielectric Withstanding Voltage (VAC) | 450 for 2 seconds | 450 for 2 seconds | 450 for 2 seconds | 450 for 2 seconds |
| Holding Torque, Min (mNm) | 10.95 | 7.77 | 10.95 | 7.77 |
| Holding Torque, Min (oz-in) | 1.55 | 1.1 | 1.55 | 1.1 |
| Inductance per Phase, Typical (mH) | 7.8 | 3.9 | 52.8 | 20.3 |
| Insulation Resistance at 500 VDC (Mohm) | 100 | 100 | 100 | 100 |
| Rated Current per Phase (A) | 0.25 | 0.25 | 0.1 | 0.1 |
| Resistance per Phase, ± 10% (Ohm) | 20 | 20 | 115.2 | 115.2 |
| Winding Phase | Bipolar | Unipolar | Bipolar | Unipolar |
| Leadwire | AWG #28, UL 1429 (80°C, 150 V) | AWG #28, UL 1429 (80°C, 150 V) | AWG #28, UL 1429 (80°C, 150 V) | AWG #28, UL 1429 (80°C, 150 V) |
| Document | Document Type | Language | File Type |
|---|---|---|---|
| 20M020D Specification Page | Specification Page |
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| 20M020D drawing | 2D Drawing |
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| 20M020D 3D drawing | 3D Drawing |
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