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Sensor Targets

Phoenix America Magnetic Targets
Phoenix America Inc. differentiates itself from other sensor and encoder manufacturers by developing and manufacturing it’s own magnetic targets. At the heart of many of the Phoenix America Inc. solutions are the Magnetic Target Wheels and Proximity Targets. Allow the Phoenix America Inc. Engineering team to handle ‘both ends’ of your feedback answer by not only defining a sensor and magnetic target but by manufacturing and shipping them as an optimized total solution. Free up your engineering resources to focus on core competencies, let Phoenix America Inc. take care of your feedback requirements.


Phoenix America Inc.’s radial, multi-pole magnetized target wheels are uniquely constructed of a proprietary mix of magnet materials and engineering thermoplastics. The result is a unitized magnet target wheel which produces a very accurate, homogeneous magnetic field and has very tight mechanical tolerances. This provides for a very low cost product, compared to the traditional, high component count wheels with individual magnet bars glued into place.


Magnet Target Wheel - P10AMagnetic Proximity Sensor Target - P4P90A2Magnet Target Wheel - P58AMagnetic Proximity Sensor Target - P4H90A2

Radial, multi-pole target magnets - large range of pole patterns

The North and South pole spacing accuracy is better than .25 degrees. All standard radial target magnet wheels are magnetized with the pole pattern on the outside diameter with alternating North and South poles.

The maximum number of pulses the sensor can “see” is determined by the air gap, rotor diameter and magnet material. A listing of popular rotor sizes appears on the following pages. Many other pole counts and rotor magnets are available. Please do not hesitate to ask us about other options, sizes and shapes that may be more suitable for your application.

Tight tolerance control, precise pole location, and very consistent magnetic performance make these target wheels well suited for speed, commutation, encoding, counting and tachometry applications. Three standard grades of materials allow for a wide range of air gap capabilities. Adhesive bonding is the recommended mode of mounting, although many customers have satisfactorily attached these targets to their shafts using various other schemes. Please feel free to contact Phoenix America Inc. for application engineering or product assistance.

Ferrous Targets

In applications where the use of a ferrous target is preferable, Phoenix America Inc. can also provide an array of ferrous targets.


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