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On the phone:
M - F 8:30 am EST to 5:00 pm PST
Customer Service: 1-800-418-7903
Technical Support: 1-800-GO-VEXTA (468-3982)
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Chicago: +1-847-871-5931
Los Angeles: +1-310-715-3303
1-800-746-6872
Available Frame Sizes
High-Torque, High-Efficiency Type (1.8°/step)
- Product Lineup
- Search by Specification
- System Configuration
- Step Motor Wiring and Connection
- Technical Articles
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 efficient 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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High Torque Type
This motor combines high torque and a compact size. Three frame sizes, 1.10 in. (28mm), 1.38 in. (35mm) and 1.65 in. (42mm), are available. 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.
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
Need a Motor & Driver System?
Guaranteed Performance
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High Speed 20 ~ 75 VDC |
Compact Driver 24 VDC |
Product Lineup
Type |
Frame Size |
without Encoder |
with Encoder |
Connection |
Lead Wires |
Max. Holding Torque |
 High-Torque |
 0.79 in. (20 mm) |
View | - | Bipolar | 4 | 2.8 oz-in (0.02 N·m) |
| View | - | Unipolar | 5 | 1.98 oz-in (0.014 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 | 42 ~ 78 oz-in |
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| View | View | Unipolar | 6 | 34 ~ 62 oz-in |
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| 2.22 in. (56.4 mm) | View | Bipolar (Series), Unipolar | 6 | 86 ~ 320 oz-in |
View Products = View all PK/PV Series Stepping Motors