PST155 15mm Incremental Potentiometers

Introduction

Bourns’ PST155 series is a range of compact 15 mm incremental rotary potentiometers for position-feedback duties. The series combines a hollow-shaft construction with a mounting-hole pin feature, supporting integration where a control or mechanism already uses a larger rotary shaft. With a specified operational life of 10,000 cycles, PST155 devices are intended for repeated adjustment and feedback functions in equipment that needs consistent rotary position information.

What it does

The PST155 is an incremental rotary potentiometer: as its shaft is turned, it provides position feedback for a connected electrical or control system. Its hollow shaft is a defining mechanical characteristic, allowing the potentiometer to be fitted around a larger shaft rather than requiring a conventional solid-shaft arrangement.

The 15 mm format helps keep the device compact while retaining a robust rotary interface for equipment controls and motion-related mechanisms. Bourns describes the series as providing accurate position feedback, stable electrical performance, and consistent output in demanding operating environments.

A mounting-hole pin is specified for the series, giving designers a defined mechanical mounting feature to consider alongside shaft alignment and panel or assembly geometry.

Applications

Potential uses that follow directly from the PST155 series’ rotary position-feedback function include:

• Automation equipment controls
• Motion-control mechanisms
• Robotics interfaces and assemblies
• HVAC control hardware
• Industrial control equipment
• Commercial equipment requiring rotary adjustment or position sensing

Design considerations

The hollow-shaft design should be evaluated early in the mechanical layout, particularly for compatibility with the diameter and arrangement of the host rotary shaft. Designers should also account for the 15 mm component size and the specified mounting-hole pin when establishing panel, PCB, or mechanical assembly dimensions.

For applications involving frequent adjustment or movement, the specified 10,000-cycle operational life provides a useful baseline for assessing expected service requirements. The component’s incremental position-feedback behavior should also be matched to the requirements of the receiving control electronics and system interface.

Availability and further information

Further technical information is available through the Mouser Electronics source link and the PST155 datasheet link provided on this page.