Nema 11 Flat Pancake Stepper Motor OK28BP13-2A with 2 Phase 1.8 Deg 2.5Ncm 4 Wires
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This is a 2-phase bipolar stepper motor with a 1.8° step angle and 2.5Ncm detent torque. It features a 0.5A phase current and operates with a rated voltage of 1.55V. With a Nema 11 (28mm x 28mm) frame size, 3mm diameter shaft, and 4-wire connection.
Electrical Specification
Manufacturer Part Number:OK28BP13-2A
Motor Type: Bipolar Stepper
Phase:2
Step Angle: 1.8 deg
Detent Torque: 2.5Ncm (3.54oz.in)
Rated Voltage:1.55V
Rated Current/phase: 0.5 A
Phase Resistance: 3.1 ohms
Inductance: 0.95mH ± 20%(1KHz)
Physical Specification:
Frame Size: 28 x 28 mm
Body Length: 13 mm
Shaft Diameter: Φ3 mm
Number of Leads: 4
Lead Length: 50 mm
Weight:40g;

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| Electrical Specification | |
|---|---|
| Bipolar/Unipolar | Bipolar |
| Rated Current (A) | 0.5 |
| Step Angle(°) | 1.8 |
| No. of Phase | 2 |
| Rated Voltage(V) | 1.55 |
| Holding Torque (Ncm) | 2.5 |
| Holding Torque (oz.in) | 3.54 |
| Physical Specification | |
| Frame Size(mm) | Nema 11(Φ28) |
| Single Shaft/Dual Shaft | Single Shaft |
| Body Length(mm) | 13 |
| Lead Length(mm) | 50 |
| Shaft Diameter(mm) | Φ3 |
| Weight(g) | 40 |


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