About Us

A Full Service High Precision Magnet Partner For All Your Magnets and Ceramics Requirements

Precision Magnetics, Inc. (PMI) was established as a result of customers request for high quality magnetics materials and components.

PMI focus is to design and / or build mission critical magnets and magnetic assemblies, primarily for the aerospace, military, energy, medical, R & D, semiconductor, and other industrial markets. We have strong capabilities in:

Engineering - permanent magnet circuit design and modeling, design for manufacturability, design to cost, tool design, and manufacturing engineering.

Quality Planning - operations methods sheets, gauging, statistical methods, and training based on ISO 9001-2008 and AS9100 QMS and audited to MIL-I-45208A Standard.

Supply Chain Management - we maintain strong SCM systems and qualify all critical raw material and process suppliers.  Permanent magnet stock materials are sourced from the world's premier manufacturers.

Magnet Fabrication - we fabricate custom magnets to virtually any shape and size using our in-house grinding and EDM facilities.

Machining - both in-house & outsource top-notch high precision machining of components for assemblies. Materials machined on a regular basis include all types of steels, aluminum, inconel, brass, copper, and plastics.
Assembly - we manufacture all types of precision magnetic assemblies.

Inspection and Testing - we utilize state of the art inspection and gauging systems, including vision systems and coordinate measuring machines

Low-Cost-Region Manufacturing - when appropriate we can provide our customers with a cost reduction roadmap by controlled transition of production from USA to China based production in our owned LCR plants.

One-Stop Magnetics Solutions is able to provide you with anything from a standard off the shelf magnet, to custom magnets, custom magnetic assemblies, and sophisticated custom electrical machines.

Quality Management System:

Our Quality System is based on ISO-9001-2008 as well as AS9100 and audited to conform to MIL-I-45208-A Standard.  PMI’s Quality Assurance System integrates all engineering, manufacturing and verification functions through a “Planning for Product Realization” process. This extensive review and approval process allows for customer flexibility while maintaining stringent system controls. An active internal audit process maintains the integrity of all company activities and sub-tier suppliers’ performance..

Our Quality System Audits is based on:

  • Recertification audit are done annually
  • Customer audits and source inspections are conducted on a regular basis.
  • Internal QMS audits are carried out continuously throughout the year through which every element of our QMS is cyclically audited.

Mission Critical Programs:

All Mission Critical programs involving high precision or complex design and manufacturing processes go through our Manufacturing Process Demonstration Review Procedure, including concurrent engineering with the customer, and must complete a Post-preliminary Design Review (PDR) and Post-Critical Design Review (CDR) Assessment and approval milestones.

 Our Quality Policy:

  • The pursuit of the greatest value to its customer base through the PMI application of advanced technological approaches in the processing of component parts and modular assemblies, which also leads to competitive pricing for products.
  • Providing defect-free products, to our customers.
  • Continuous Improvement, in all aspects of the PMI Quality Assurance System.
  • Adherence to the company quality policies and management directives.
  • PMI is committed to understanding and meeting the quality needs and expectations of all our customers, subcontractors, and associates.

 Proprietary Operating Procedures:

PMI has developed its own proprietary comprehensive “close-looped” flow-chart Operating Procedures system which allows the efficient functioning of our QMS systems to meet all of the requirements of the ISO 9001:2008 International Quality System Standard and the AS9100:2004-01 Revision Aerospace Industry-Specific Standard.

Inspection & Testing

PMI utilizes state of the art inspection and gauging systems, including vision systems and coordinate measuring machines

Statistical Process Control & Analysis Tools

PMI utilizes Real time SPC, and statistical analysis of results to guide actions and evaluate process changes.

Environmental Health and Safety 

PMI complies with all local, state and federal environmental regulations.  We are in the process of developing a more comprehensive EHS Management System that will aligns closely with elements prescribed in both ISO 14001 and OSHAS 18001, international standards that specify requirements for all environment, health and safety management system

Resource Desk

Rare Earth Pricing Bulletin - June 15, 2011 - the mismatch between demand and supply of Rare Earth ores continues to cause high volatility and increased prices of Rare Earth magnets.

Magnet Materials Tables of Properties and Technical Data Sheets
Magnet Materials – Technical Resources

Predict the surface flux density of a Permanent Magnet Rotor or Flywheel - with acknowledgements to Dr. Stefano Tizianel, Technical Director at Laboratorio Elettrofisico Eng in Italy, and inventor of the sinewave magnetization fixture, and SAT transverse flux magnetization coil. (Note: In the formula, Distribution is H for Halbach (sine wave) and R for Radial. In "R" condition you can consider the magnet covering the entire pole (Angle=1) or a partial pole (for example, Angle 0.5 if the magnets cover only half a pole, when, in other words, there is a large distance between magnets). The Position is the radius at which the flux density is calculated and plotted. The Position radius should be inside the air gap. (The Stator and Rotor are considered to have infinite permeability, and therefore not saturated.) The Stator and Rotor can be inverted by making Rs smaller than Rr; the value of Rm, must be between Rs and Rr.)
Aging losses - Shin Etsu data sheet showing aging loss over time of N38H material
Hydrogen embrittlement of Rare Earth magnets - presentation by Shin Etsu showing effect of Hydrogen on NdFeB and SmCo magnets
VAC presentation on corrosion on NdFeB magnet material
Shin Etsu notes on Epoxy Coating and Comparison of Coatings for NdFeB magnets

Recommended Reading

Advances in Permanent Magnetism - Parker
Permanent Magnet Design & Application Handbook - Moskowitz
Permanent Magnet Materials & Their Application - Campbell
Introduction to Magnetic Materials - Cullity
Introduction to Magnetism and Magnetic Materials - Jiles
Modern Magnetic Materials - O'Handley
Physics of Magnetism - Soshin Chikazumi
Ferromagnetic Materials Structure and Properties - McCurrie
Ferromagnetism - Bozorth
Magnetism Principles and Applications - Craik


Clinical Applications of Magnetic Carriers - using magnetic nanoparticles for targeted drug delivery
Magnetic shielding solutions - Magnetic Shield Corporation, MuShield, Ad-Vance Magnetics
Treating pain with magnetics - National Center for Complementary and Alternative Medicine, and NIH report
Site with excellent on-line unit of measure conversions

Adhesives Technical Data Sheets

Technical Data Sheets for products often used in bonding magnets

3M 2214 - high fill epoxy good to about 250°F
Araldite 2021 - fast cure checmial resistant adhesive
Eccobond 285 - thermally conductive epoxy
Loctite 324 - quick cure cyanoacrylate adhesive
Loctite 325 - quick cure cyanoacrylate adhesive
Loctite 326 - quick cure cyanoacrylate adhesive
Loctite 331 - medium viscosity, environmental and chemical resistance
Loctite 332 - motor bonding applications
Loctite 334 - motor bonding applications
Loctite 392 - rapid cure for automated assembly
Loctite 7113 - activator for increased cure speed and fillet cure
Loctite E220IC - induction cure epoxy
Loctite guide to magnet bonding
Loctite Adhesives Design Guide for Electric Motors and Generators
MagnTac E645 - lamination stack adhesive
Morgan Everlube 10047 - organic coating for Rare Earth magnets

Fascinating Magnetics!

Magnetic levitation movies - interesting demonstrations using high magnetic fields for levitation
Ferrofluids - see how a ferrofluid behaves in a magnetic field

Coming Soon


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