Multiturn Non-Contacting Magnetic Sensor – AMM20B


Available in a bushing mount configuration with a rotational life of up to 50 million shaft revolutions, the Bourns® Non-Contacting Multiturn Hall Effect Sensor AMM20B Series is well-suited for harsh environments and long life applications within rated limits.

The Model AMM20B sensor is designed to meet the specifications of heavy-duty applications requiring high reliability and precision. The Model AMM20B position sensor features a slim profile package for applications with space constraints and a programmable electrical angle from 1080 to 3600 degrees. Special angles are available upon request.


  • Non-contacting magnetic technology
  • Programmable electrical angle and slope
  • Minimal sensitivity to environment
  • 50 million shaft cycle rotational life
  • RoHS compliant
  • Extremely long life
  • Stable linearity over life
  • Robust design for industrial applications
  • Highly resistant to vibration/shock
  • Highly resistant to fluid/dust ingress
  • Ability to withstand side load on shaft
  • Form, fit and function replacements for multiturn units with older technologies using bushing mount configurations


  • Patient platform positioning
  • Draw wire position
  • Actuator motor position
  • Valve position
  • Camera positioning
  • Steering, lift-and-shuttle and suspension system positioning