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Available Frame Sizes
High-Torque, High-Efficiency Type
- Product Lineup
- Search by Specification
- System Configuration
- Step Motor Wiring and Connection
- Technical Articles
Providing Up to 50% More Torque
High Torque Type
The high-torque type motor adopts a new technology and design. A high-torque motor produces approximately 1.2 ~ 1.5 times higher torque than a conventional stepping motor of the same size.
This motor combines high torque and a compact size. Five frame sizes are available: 0.79 in. (20mm), 1.10 in. (28mm), 1.38 in. (35mm), 1.65 in. (42mm) and 2.22 in. (56.4mm). Each specification provides torque equivalent to a motor of the next larger frame size, supporting high-torque operation even in the high-speed range.
For example, high torque type PK246PB [motor frame size 1.65 in. (42mm)] has the same holding torque as the standard type PK266-01B [motor frame size 2.22 in. (56.4mm)]. This means a smaller size motor will maintain the same torque. This allows for downsized and lightweight equipment.
High-Efficiency Type
This motor combines the superior performance of our high torque motor with our latest technology advancements in efficiency to achieve superior overall performance in a stepping motor. Three stack lengths to choose from in a 1.65 in. (42 mm) frame offer holding torque performance 1.2 ~ 1.5 times greater than a conventional stepping motor.
Lower Heat Generation Utilizing the latest in motor technology, the High-Torque, High-Efficiency type stepping motors are able to achieve a significant reduction in the amount of heat generated from the motor.
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Energy Saving Up to 40% less power is consumed at rated current when compared to conventional stepping motor models also at rated current. This high efficiency stepping motor allows for smaller power supplies to be used to power the motor / driver. CO2 emission: up to 15 kg (33 lb) less than a conventional model Amount of CO2: |
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Encoder Option Available
The PK Series stepping motor with encoder offers high torque and precise feedback capability.
- Encoder Feedback Type: Incremental
- Two feedback resolutions: 200 and 400 pulses/rev.
- 2-channel or 3-channel
- Provides closed loop system capability
Product Lineup
Type |
Frame Size |
without Encoder |
with Encoder |
Basic Step Angle | Connection |
Lead Wires |
Max. Holding Torque |
 High-Torque |
0.79 in. (20 mm) | View | - | 0.72° | New Pentagon (Bipolar) | 5 | 3.2 oz-in |
| 1.10 in. (28 mm) | View | - | 6.8 ~ 11 oz-in |
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| 1.65 in. (42 mm) | View | View | 34 ~ 59 oz-in |
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 0.79 in. (20 mm) |
View | - | 1.8° | Bipolar | 4 | 2.8 ~ 5.1 oz-in (0.02 ~ 0.036 N·m) |
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| View | - | Unipolar | 5 | 1.98 ~ 3.6 oz-in (0.014 ~ 0.026 N·m) |
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| 1.10 in. (28 mm) | View | Bipolar | 4 | 9.2 ~ 15.6 oz-in (0.065 ~ 0.11 N·m) |
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| View | Bipolar (Series), Unipolar | 6 | |||||
| 1.38 in. (35 mm) | View | Bipolar | 4 | 28 ~ 52 oz-in (0.2 ~ 0.4 N·m) |
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| View | Bipolar (Series), Unipolar | 6 | |||||
1.65 in. (42 mm) High-Efficiency Type |
View | - | Bipolar | 4 | 42 ~ 78 oz-in |
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| View | - | Unipolar | 6 | 34 ~ 62 oz-in |
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| 1.65 in. (42 mm) | View | View | Bipolar | 4 | 68 ~ 132 oz-in |
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| View | View | Unipolar | 6 | 55 ~ 106 oz-in |
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| 2.22 in. (56.4 mm) | View | Bipolar (Series), Unipolar | 6 | 85 ~ 320 oz-in |
View Products = View all PK/PV Series Stepping Motors