Magnets - Multi Purpose

Magnets Multi Purpose covers the general-duty permanent magnets that turn up in almost every electromechanical build: disc, ring, block, and cylinder shapes in neodymium iron boron (NdFeB), ferrite (ceramic), alnico, and samarium cobalt. They go into small DC motors, reed and Hall sensor assemblies, speakers and buzzers, magnetic latches, holding fixtures, encoders, and countless jigs on the production line. Because these parts are commodity items, the listing price rarely tells the whole story. A neodymium disc sold as N52 from an unverified seller often tests closer to N42, and the difference shows up as weaker pull force or a motor that misses its torque target. Experienced buyers check the grade against the datasheet, confirm the coating (nickel-copper-nickel is standard, epoxy or zinc for harsher environments), and look at the maximum operating temperature, since a standard N-grade magnet starts losing strength above 80°C while an SH or UH grade holds up past 150°C. Tolerances matter too. Most general-purpose magnets are supplied at ±0.1 mm, which is fine for a latch but marginal for a tight rotor assembly. The real trade-off in this category is price versus lead time: standard sizes ship from stock within days, but a custom diameter, special coating, or non-standard magnetization direction can mean four to six weeks from the factory. Ferrite costs a fraction of neodymium and tolerates heat better, but you need roughly ten times the volume for the same holding force, so the choice is rarely about price alone. One more practical point: strong magnets need proper shielding and spacing in transit, and sloppy packaging is a quiet red flag about the supplier behind them. Check current stock or send us your spec for a quote at icxing.com.