Counterbore Pot Magnets

Counterbore pot magnets (also called counterbore hole cup magnets, recessed head mounting magnets) feature a precision counterbore hole designed to fully recess the screw head for a smooth, flat surface finish. Combining a high-performance permanent magnet with a heavy-duty steel cup, these magnets provide concentrated magnetic force while enabling clean, professional installation. Ideal for industrial fixtures, tooling, signage, door catches, equipment mounting, and applications where a flush, neat appearance is required.

Neodymium pot magnet with cylindrical throught hole is supplied with standard diameter size of 16mm, 20mm, 25mm, 32mm, 36mm, 42mm, 48mm, 60mm,75mm.

Key Features

· Straight Cylindrical Through HoleSmooth vertical through hole for bolts, screws, pins, or shafts; easy to assemble and adjust.

· High Concentrated Magnetic ForceSteel cup design enhances pull force and prevents magnet fragmentation.

· Durable & Corrosion ResistantNickelcoppernickel (NiCuNi), zinc, black epoxy, or painted coatings for long service life.

· Wide CompatibilityWorks with standard fasteners; suitable for both temporary and permanent mounting.

Specifications

· Magnet Materials: Neodymium (N35–N52) / Ferrite Ceramic

· Housing: Steel cup

· Mounting: Central cylindrical through hole

· Outer Diameter: Ø16 mm – Ø100 mm

· Pull Force: 3 kg – 150 kg

· Coatings: NiCuNi, Zinc, Epoxy, Black Paint

· Max Operating Temp: 80°C (NdFeB); 200°C (Ferrite)

Model	D	D1	D2	H	Pull Force(kg)	Dead Weight(g)
NdFeB-B16	16	3.5	6.5	5	4	6
NdFeB-B20	20	4.5	8	7	6	12
NdFeB-B25	25	5.5	9	8	14	23
NdFeB-B32	32	5.5	9	8	23	36
NdFeB-B42	42	6.5	11	9	32	73
NdFeB-B48	48	8.5	15	11.5	63	114
NdFeB-B60	60	8.5	15	15	95	240
NdFeB-B75	75	10.5	18	18	155	471