2-Phase Stepper Motors PKP/PK Series Motor Details
Standard Type
You can choose according to specifications and characteristics you are looking for.
| Type |
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| Features |
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Reasonable price |
| Permissible Radial Load □42 mm (Maximum value) |
85 N | 52 N |
| Permissible Axial Load □42 mm | 15 N | 10 N |
| Speed - Torque Characteristics Example □42 mm (Reference value) |
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Advantages of Increased Permissible Radial Load
Permissible radial load has been increased for the mini connector type.
High-Resolution Type
This motor has a basic step angle of 0.9°. This results in a greater positioning accuracy. In addition, the displacement angle when external force is applied to the shaft is smaller than that of the standard type.
Comparison of Displacement Angles Due to Frictional Load (Reference values)
For a friction load of 0.3 N·m
Flat Type
This flat stepper motor can be installed in small spaces. It is useful in various situations such as index tables and robot joints.
Comparison of Flat Type and Standard Type: □42 mm and □28 mm
| Motor Type | Flat type | Standard type |
|---|---|---|
| Frame Size | □42 mm | □28 mm |
| Dimensions | ![]() |
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| Product Name | PKP242D23A2 | PKP223D15A2 |
| Mass | 0.11 kg | 0.11 kg |
| Maximum Holding Torque | 0.1 N·m | 0.095 N·m |
| Motor Length | 17 mm | 32 mm |
Comparison of Flat Type With Encoder and Standard Type With Encoder: □42 mm and □28 mm
| Motor Type | Flat Type With Encoder | Standard Type With Encoder |
|---|---|---|
| Frame Size | □42 mm | □28 mm |
| Dimensions | ![]() |
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| Product Name | PKP242D23A2-R3E | PKP223D15A2-R3E |
| Mass | 0.13 kg | 0.13 kg |
| Maximum Holding Torque | 0.1 N·m | 0.095 N·m |
| Motor Length | 30.5 mm | 47.5 mm |
Harmonic Geared Type
Combined with harmonic gearheads, high-torque, large-inertia drive is possible. Since the load can be mounted directly on the rotating surface, it can be easily accommodated in the narrow space of a robot joint.
Comparison of Low-Profile Harmonic Geared Type and Low-Profile Harmonic Geared Type With Encoder: □51 mm
| Motor Type | Flat Harmonic Geared Type | Low-Profile Harmonic Geared Type With Encoder |
|---|---|---|
| Frame Size | □51 mm | □51 mm |
| Dimensions | ![]() |
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| Product Name | PKP242D23A2-H50 | PKP242D23A2H50R3E |
| Mass | 0.32 kg | 0.34 kg |
| Maximum Holding Torque | 1.8 N·m | 1.8 N·m |
| Motor Length | 29.5 mm | 43 mm |
Geared Type
By using the geared type, the advantages of deceleration, high torque, and high resolution can be obtained. Torque can be increased without changing the frame size even when motor installation space is limited.
Comparison of standard type and CS geared type □42 mm
| Motor Type | Standard Type | CS Geared Type |
|---|---|---|
| Dimensions | ![]() |
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| Product Name | PKP243D15A2 | PKP243D15A2-CS20 |
| Maximum Holding Torque | 0.35 N·m | 2 N·m |
Points for Using CS Geared Type and SH Geared Type
| Type |
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|---|---|---|
| Features |
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CS Geared Type
High-torque, high-strength geared motor. Center shaft shape.
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High Strength
Dimensions Comparison (Units: mm)
Torque Characteristics Comparison
Click here for details on the development (Technical Report)
SH Geared Type
This geared motor is available in a wide variety of gear ratios, wiring methods, frame sizes, etc. Also available with an encoder.







