Does the AKM2 magnetic drain plug require periodic cleaning to maintain its magnetic particle retention efficiency?

Yes. The AKM2 magnetic drain plug should be cleaned periodically to maintain its ability to attract and retain ferromagnetic particles. Over time the neodymium or alnico magnetic pin collects metallic debris from the hydraulic oil; if not removed, this build-up reduces magnetic effectiveness and can allow abrasive particles to circulate, increasing wear on pumps, valves and other components. Recommended practice: remove the AKM2, wipe the magnetic pin and surrounding bore with a clean, lintâfree cloth (and a mild solvent if needed) until metal filings are gone, then reinstall with its washer. Cleaning frequency depends on system contamination levels and operating hours.inspect during routine oil changes or service intervals and more often in heavily contaminated systems.

How often should the AKM2 magnetic drain plug be inspected for wear or corrosion?

Inspect the AKM2 magnetic drain plug for wear or corrosion at regular service intervals - at least every 3 months or every 250 operating hours, whichever comes first. Additionally, check it whenever hydraulic oil is changed or if system performance drops (increased noise, reduced responsiveness). During inspection: remove and clean the magnetic pin and washer, look for pitting, loss of magnetism, aluminum corrosion on the body or washer, and inspect threads and sealing surfaces. Replace the AKM2 magnetic drain plug if you find significant corrosion, damaged threads, a weakened magnet, or excessive metal buildup that cannot be cleaned.

Can the AKM2 magnetic drain plug be used with non-ferrous hydraulic oils or additives that affect magnetic particle attraction?

Generally no. the AKM2 magnetic drain plug is effective only for ferromagnetic particles and will not capture non-ferrous wear debris or particles whose magnetic response is suppressed by certain additives. Explanation: The AKM2 magnetic drain plug uses a neodymium or alnico magnetic pin to attract and retain ferromagnetic (iron-based) particles suspended in hydraulic oil. Non-ferrous materials (aluminum, brass, copper, bronze, some stainless steels, and many ceramic or polymer particulates) are not attracted by permanent magnets, so they will pass by the AKM2 without being retained. Likewise, some oil additives or contamination can form surface films or chemical complexes around metal particles that reduce their magnetic susceptibility or prevent physical contact with the magnet; in such cases the AKM2âs effectiveness can be diminished. Practical implications: - If your hydraulic system primarily produces ferrous wear, the AKM2 magnetic drain plug provides valuable protection for pumps, valves and actuators. - If wear is non-ferrous or if you use additives known to encapsulate particles (e.g., certain antiwear or dispersant chemistries), rely on supplemental filtration (fine mechanical filters, debris traps, particle counters) and oil analysis rather than the AKM2 alone. - For mixed wear environments, combine the AKM2 with appropriate inline filters and regular oil monitoring to maximize component protection. Conclusion: Use the AKM2 magnetic drain plug as a targeted solution for ferromagnetic contamination; it will not capture non-ferrous particles or fully overcome additive effects that reduce magnetic attraction.

AKM2 magnetic drain plug

All products, Other high-pressure accessories/

Additional information

Material	AL – aluminum

Magnetic drain plug mounted in the lower part of the tank. It has a magnetic pin that attracts and retains ferromagnetic particles floating in hydraulic oil. This protects the moving parts of pumps, distributors, valves, etc. from damage, increasing their lifespan. Material: aluminum (body), neodymium (magnetic pin up to 1″), alnico (magnetic pin 1.1/4″), aluminum (washer).

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
AH-AKM2-04G	Magnetic plug, GZ 1/4" BSP	-	-
AH-AKM2-06G	Magnetic plug, GZ 3/8" BSP	-	-
AH-AKM2-08G	Magnetic plug, GZ 1/2" BSP	-	-
AH-AKM2-12G	Magnetic plug, GZ 3/4" BSP	-	-
AH-AKM2-16G	Magnetic plug, GZ 1" BSP	-	-
AH-AKM2-20G	Magnetic plug, GZ 1.1/4" BSP	-	-

Magnetic drain plug mounted in the lower part of the tank. It has a magnetic pin that attracts and retains ferromagnetic particles floating in hydraulic oil. This protects the moving parts of pumps, distributors, valves, etc. from damage, increasing their lifespan. Material: aluminum (body), neodymium (magnetic pin up to 1″), alnico (magnetic pin 1.1/4″), aluminum (washer).