DSH 56 Series Stepper Motor
The DST 56 Series is a hybrid stepper motor line from TECO, with a “56” indicating the approximate frame size (56 mm class). These motors are designed for automation axes that require moderate-to-high torque and precise incremental positioning, typically used when simplicity and cost-effectiveness are preferred over complete servo systems.
Key Features & Specifications
Frame size: ~56 mm, larger than smaller frame motors (e.g., DST42) but still compact enough for many machine axes.
Stepper motor construction: Hybrid two-phase stepper motor offering discrete step motion (e.g., 1.8° step angle typical) as per catalogue norms.
Wiring options: Available with different lead configurations (4-lead bipolar or 6-lead unipolar), depending on the variant.
Technical parameters: The Datasheet shows winding resistance, inductance, and rotor inertia for the DST56 series.
Applications
Medium-duty automation axes such as indexing tables, rotary feeders, conveyors, and machine peripherals.
Motion control tasks that require accurate stepping and moderate torque, but where complete servo systems may be over-spec or too costly.
Machines where open-loop stepper control is acceptable and simplicity, cost, and size matter.
Design & Selection Considerations
Torque vs speed trade-off: As with all stepper motors, available torque decreases at higher speeds; review the torque vs speed curve for the specific DST56 model.
Inertia matching: Ensure the motor’s rotor inertia matches the load inertia; exceeding the motor’s inertia may cause lost steps or resonance.
Driver compatibility: Use a stepper driver that supports the correct wiring style and current/voltage specification of the DST56 variant.
Control strategy: While many systems can use it in open-loop mode, if accurate feedback or high-speed dynamic motion is required, you might need to consider closed-loop alternatives.
Mechanical integration: A frame size of ~56 mm means you should check mounting dimensions, shaft size, coupling, and cooling requirements to ensure reliable performance.
The DST56 Series Stepper Motor by TECO offers a solid, cost-effective stepping motor solution for moderate torque, moderate size automation applications. It falls into the mid-frame class (56 mm) in the stepping motor lineup, offering a good balance between compact size and increased torque. When properly matched to load, driver, and speed requirements, it provides reliable, precise incremental motion control.
