Questions? Email or call us now at 727-351-2505

Sensors which utilize hall effect technology require a magnetic target to determine motion. Phares Magnetic Disks fill that requirement and are easy to install. To simplify installation, magnets are mounted in an aluminum disk which we refer to as a Magnetic Disk.

Phares Magnetic Disks are designed for industrial machine speed monitoring. They improve zero speed switch response time and industrial tachometer update time, especially for slow speed applications. Our 3″ Magnetic Sensor Targets and Magnetic Disks are capable of a maximum of 52 PPR (pulses per revolution)! They are compact and very effective.

Phares Magnetic Sensor Targets and Magnetic Disks are designed for applications where vibration, dirt, dust and grime are present. Magnetic fields are unaffected in these environments and our Hall Effect Sensors and Zero Speed Switches are able to accurately sense a magnetic target under these conditions. Even if a Zero Speed Switch Sensor, Gear Tooth Sensor, or Hall Effect Sensor is slightly misaligned with a Phares Magnetic Target or Magnetic Disk, they are still able to accurately detect the magnetic target and function properly.

Methods of securing a Phares Magnetic Disk to a shaft:

• Bolt the disk to the end of a shaft.
• Slide the disk onto a shaft, securing it with set screws.
• Clamp the disk around a shaft.

For applications where space is limited, individual Magnets, Magnetic Rings, and Split Disks are available.

The table below shows Phares Magnetic Disks which are typically in stock. Custom Magnetic Disk types, diameters, and bore sizes are available, including split disks which are used to clamp around a shaft.

Phares Magnetic Sensor Disks Part Numbers & Description

Need help selecting a Magnetic Disk? Email or call us now at 727-351-2505

3″ Magnetic Sensor Disks

Part No. PE-3DHD-0.25T-AB-0.25 PPR (pulses per revolution): Standard 22, Maximum 44 Dimensions: 3.00″ O.D., 0.25″ I.D. (bore), 0.25″ Thick Orientation: Axial Bore Type: Enlargeable (1.25″ Max.) Installation: Bolt to End of Shaft

Part No. PE-3DHD-0.50T-RB-0.25 PPR (pulses per revolution): Standard 26, Maximum 52 Dimensions: 3.00″ O.D., 0.25″ I.D. (bore), 0.50″ Thick Orientation: Radial Bore Type: Enlargeable to 1.75″ Max. Installation: Bolt to End of Shaft

Part No. PE-3DHD-0.50T-AST-0.25 PPR (pulses per revolution): Standard 22, Maximum 44 Orientation: Axial Dimensions: 3.00″ O.D., 0.25″ I.D. (bore), 0.50″ Thick Bore Type: Enlargeable to 1.25″ Max. Installation: Slide Over End of Shaft, Secure With Set Screws

Part No. PE-3DHD-0.75T-RST-0.25 PPR (pulses per revolution): Standard 26, Maximum 52 Dimensions: 3.00″ O.D., 0.25″ I.D. (bore), 0.75″ Thick Orientation: Radial Bore Type: Enlargeable to 1.75″ Max. Installation: Slide Over End of Shaft, Secure With Set Screws

4″ Magnetic Sensor Disks

Part No. PE-4DHD-0.25T-AB-0.25 PPR (pulses per revolution): Standard 32, Maximum 64 Orientation: Axial Dimensions: 4.00″ O.D., 0.25″ I.D. (bore), 0.25″ Thick Bore Type: Enlargeable to 2.00″ Max. Installation: Bolt to End of Shaft

Part No. PE-4DHD-0.50T-RB-0.25 PPR (pulses per revolution): Standard 36, Maximum 72 Dimensions: 4.00″ O.D., 0.25″ I.D. (bore), 0.50″ Thick Orientation: Radial Bore Type: Enlargeable to 2.25″ Max. Installation: Bolt to End of Shaft

Part No. PE-4DHD-0.50T-AST-0.25 PPR (pulses per revolution): Standard 32, Maximum 64 Orientation: Axial Dimensions: 4.00″ O.D., 0.25″ I.D. (bore), 0.50″ Thick Bore Type: Enlargeable to 2.50″ Max. Installation: Slide Over End of Shaft, Secure With Set Screws

Part No. PE-4DHD-0.75T-RST-0.25 PPR (pulses per revolution): Standard 36, Maximum 72 Dimensions: 4.00″ O.D., 0.25″ I.D. (bore), 0.75″ Thick Orientation: Radial Bore Type: Enlargeable to 3.00″ Max. Installation: Slide Over End of Shaft, Secure With Set Screws

Part No. PE-4D1M-0.875T-RS-1.25 PPR (pulses per revolution): 1 Dimensions: 4.00″ O.D., 1.25″ I.D. (bore), 0.875″ Thick Orientation: Radial Bore Type: Fixed Installation: Slide Over End of Shaft, Secure With Set Screws

Selecting a Magnetic Disk

Selecting a Phares Magnetic Disk is very simple. We just need to know three things:
1) The sensor orientation in relation to the Magnetic Disk (Axial or Radial).
2) The preferred method to secure the Magnetic Disk to the shaft:
Bolt to shaft end.
Slide over shaft end, secure with two set screws.
Clamp around shaft via Split Coupling, secure with two set screws.
(Magnetic Disks keyed upon request.)
3) The bore size (I.D.) required.

Need help selecting a Magnetic Disk? Email or call us now at 727-351-2505