Alnico Deep Pot Magnets (With Threaded Hole)
Powerful clamping forces ideal for mounting threaded components
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Overview - Alnico Deep Pot Magnets (Zinc Plated)
These Alnico deep pot magnets have a precision ground outer diameter for press fitting into precision milled holes. Like the standard alnico deep pot magnets, they are blind ended deep pot magnets. The precision ground alnico deep pot magnet comprises an Alnico 5 magnet surrounded by a brass retaining ring spacer which are both inside a zinc plated mild steel body ( “cup”) that is blind ended at the rear (no thread or tapped hole at the back). The magnetic pole face is ground to a smooth finish. The outer diameter is ground to a H6 tolerance, making it ideal for press fitting within milled-out holes. Read more about Pot Magnets
Alnico has naturally good corrosion resistance. This allows the precision ground outer diameter alnico deep pot magnet, with its zinc plated steel body, to have good corrosion resistance and allows excellent performance in many oils. The alnico deep pot magnet with precision ground OD is used at ambient temperatures and are great for high temperature use. They are recommended for use in temperatures up to +220 degrees C (+428 Fahrenheit), and can potentially be used at temperatures up to +400 degrees C (+752 Fahrenheit).
When being operated at temperatures above +200 degrees C, the materials making up the pot magnet may start to become loose due to expansion coefficients of the different materials, so it is only recommended for use with caution above +200 degrees C. Alnico has the best temperature coefficient of magnetic induction for any magnetic material so only reduces its magnetic performance slightly as the magnet heats up. This allows the alnico deep pot magnet with a precision ground outer diameter to keep performing very well as the pot magnet heats up (the Br falls the least with rising temperature when using alnico magnetic material).
This type of magnet is perfect for press-fit applications, having its H6 toleranced outer diameter. The precision ground alnico deep pot magnet is used in many applications, including clamping, tooling/fixturing and general clamping. The 'deep' pot design of the alnico deep pot magnet provides stability of magnetic performance and excellent thermal capability. It is possible to produce customised versions of this magnet. For example, the mild steel casing can be chrome or nickel plated. Also, the rear of the pot magnet could have a tapped hole or a thread included – please contact us for prices and lead times (minimum order quantities may apply). For a standard range of alnico deep pot magnets (without a precision ground outer diameter), please see our alnico deep pot magnets.
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