DST 28 Series Stepper Motor

DST 28 Series Stepper Motor

(Also known as DST28 Series)

The DST28 series is a standardized size of hybrid stepper motor manufactured by TECO under the “DST” product family. It is designed for precision positioning, open-loop control, and moderate-duty motion applications.

Key Features

• Frame/Size: “28” in DST28 likely refers to the motor’s frame size (e.g., 28 mm or 28 series) characteristic dimension, making it a compact stepper motor.

• Connector Style: The term “Connector Series” suggests a standard connector interface rather than flying leads, facilitating easier integration (e.g., plug-and-play harness).

• Step Angle & Control: As with typical hybrid stepper motors, expect step angles of 1.8° or 0.9°, with microstepping capability. The datasheet mentions the DST family in general.

• Application Scope: Ideal for minor motion axes, indexing tables, light automation tasks, feeders, or auxiliary axes where full servo performance is not required—but accurate positioning is.

• Open-Loop Usage: As a stepper, it can operate in open loop without encoder feedback (though closed-loop versions are available), reducing cost and complexity for many applications.

• Connector Convenience: The connector version allows faster system assembly and maintenance, especially in modular automation setups.

Typical Specifications

Since the datasheet for DST28 does not list every value in the public snippet, typical sample values for a frame-28 series stepper motor might be:

• Holding Torque: e.g., ~0.2-0.5 Nm (for compact frame size)

• Step Angle: 1.8° (or possibly 0.9° depending on version)

• Rated Voltage / Current as specified by model variant

• Frame Size ≈ 28 mm (body dimension)

• Connector interface for motor wiring and optionally encoder/feedback if closed-loop version

Applications

• PCB / board assembly automation (light axis)

• Pick & place auxiliary motion

• Indexing tables in packaging and labeling machines

• Small conveyor drives, print head positioning

• Educational and lab equipment where a compact step distance is needed

Advantages & Design Considerations

• Compact size: Its more petite frame makes it suitable for space-constrained installations.

• Connector wiring: Quicker setup and maintenance compared to manual wiring.

• Cost-effective: A good balance between performance and cost for moderate-duty motion axes.

• Open vs Closed Loop: While many stepper motors are open-loop, if the application demands no missed steps or higher speeds, consider closed-loop or hybrid versions.

• Torque at speed: As with all steppers, torque declines at higher speeds—engineers should review the torque-speed curve and ensure load inertia is appropriate.

• Resonance and micro-stepping: To avoid step loss or vibration, ensure the driver supports micro-stepping and that the load is tuned correctly.