This small motor is NEMA 11 closed loop stepper motor, equipped with an 1000cpr incremental optical encoder, has a rated current 2.0A and a holding torque of 0.12Nm(17oz.in). What's more, a high precision square planetary gearbox of gear ratio 20:1 is installed to gain high torque output or low speed under limited space. It has great advantage of improved accuracy, higher torque, lower motor heating, lower power consumption, and better response compared to open loop stepper motors.
Motor Specification
Part Number: 28HS51-204D-FG20-E1000
Step Angle: 1.8deg
Holding Torque: 0.12Nm(17oz.in)
Rated Current/phase: 2.0A
Phase Resistance: 1.55ohms
Phase Inductance: 1.5mH
Frame Size: 28x28mm
Body Length: 51mm
Number of Leads: 4
Lead Length: 500mm
Gearbox Specification
Gear Ratio: 20:1
Efficiency: 94%
Backlash at No-load: <=15arcmin
Gearbox Length: 46.5mm
Shaft Diameter: Φ5mm
Shaft Length: 20mm
D-cut Length: 15mm
Encoder Specification
Encoder Resolution: 1000CPR
Encoder Signal Channels: 3
Encoder Type: Incremental
Encoder Length: 14.6mm
No. of Leads: 8
Lead Length: 300mm
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| Motor Specification | |
| Step Angle(°) | 1.8 |
| Bipolar/Unipolar | Bipolar |
| Holding Torque(Nm) | 0.12 |
| Holding Torque(oz.in) | 17.0 |
| Rated Current(A) | 2.0 |
| Frame Size(mm) | 28x28 |
| Body Length(mm) | 51 |
| Gearbox Specification | |
| Gearbox Type | Planetary |
| Gear Ratio | 20:1 |
| Efficiency | 94% |
| Backlash at No-load | 15arcmin |
| Gearbox Length(mm) | 46.5 |
| Shaft Diameter(mm) | 5 |
| Shaft Length(mm) | 20 |
| Encoder Specification | |
| Encoder Resolution(CPR) | 1000 |
| Encoder Signal Channels | 3 |
| Encoder Length(mm) | 14.6 |
| No. of Leads | 8 |
| Lead Length(mm) | 300 |
