PST155 15 mm Incremental Potentiometers

Introduction

Bourns’ PST155 series is a 15 mm hollow-shaft incremental rotary potentiometer line for position-feedback applications. Its hollow-shaft construction is intended to simplify mechanical integration with larger rotary shafts, while the compact design aims to reduce material use. With a specified operational life of 10,000 cycles, the series is positioned for rotary interfaces requiring repeatable electrical output over service life.

What it does

The PST155 is a rotary potentiometer designed to provide position feedback from shaft movement. Its 15 mm form factor and hollow shaft support installations where the sensing element must fit around or interface directly with a larger rotating shaft.

Bourns specifies 10,000 cycles of operational life for the series, along with stable electrical performance and consistent output throughout its service life. These characteristics make the device relevant where rotary position needs to be measured or translated into an electrical signal for a control system.

Applications

Potential applications that follow from its position-feedback function include:

• Rotary position sensing in automation equipment
• Motion-control assemblies
• Robotic joints or control mechanisms
• Rotary user controls requiring incremental position feedback
• Equipment using larger shafts where a hollow-shaft potentiometer can simplify mechanical coupling

Design considerations

The PST155 series uses a 15 mm format and a hollow-shaft arrangement, so mechanical shaft dimensions and coupling requirements should be reviewed during integration. Its mounting-hole pin configuration also calls for consideration of the host PCB or mechanical mounting layout.

For applications that rely on repeated adjustment or movement, the specified 10,000-cycle operational life should be evaluated against the expected duty cycle. Designers should also confirm the required electrical interface and the specific variant’s characteristics in the applicable datasheet.

Availability and further information

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