High-Precision Magnetic Polishing Machines

Magnetic polishing machines use rotating magnetic fields to drive fine stainless steel pins against complex-shaped parts, reaching internal threads, cross-holes, slots and micro-features that brushes and barrels cannot touch. The result is a bright, burr-free, oxide-free surface with no dimensional change.

These machines are widely used for precision parts in medical devices, watchmaking, jewellery, automotive injectors, aerospace fittings and CNC-machined components. Because the media is non-abrasive steel pin, the process removes only burrs and heat-tint while keeping tolerances intact.

Longyanxing magnetic deburring machines offer adjustable rotation speed, timers, water circulation and filtration, and are available in manual, semi-automatic and fully automatic configurations. Ask us which pin size and cycle time suits your parts.

Frequently Asked Questions

What is a magnetic polishing machine used for?

A magnetic polishing machine uses stainless steel pins driven by a rotating magnetic field to grind and burnish part surfaces. Because the pins behave like a flexible abrasive brush, the process reaches tiny inner holes, cross holes, deep slits and dead corners that conventional tumbling media cannot enter, producing an ultra-fine, mirror-bright finish.

Can magnetic polishing create a mirror finish on stainless steel?

Yes. With the correct pin size, compound and cycle time, magnetic polishing removes the fine cutting marks left by earlier grinding and leaves a bright, near-mirror surface on stainless steel, brass, aluminium, copper and hard alloys, typically without altering critical dimensions.

Does magnetic polishing change part dimensions or hardness?

Material removal is extremely small and uniform, so magnetic polishing is used as a final finishing operation on parts with tight tolerances. It does not alter the base hardness of the material; it only refines the surface, removes micro-burrs and improves surface roughness and brightness.