N42 Neodymium Counterbore Pot Magnet - 2-1/4 in. dia x 9/16 in. thick x 5/16 in. hole - 306.5lbs Pull

*Measurements have been rounded to the nearest fraction inch - please check the product description for specific measurements.*

Large, strong Neodymium (N42) pot magnets with a counter-bored hole on the magnetic face. Magnetism is concentrated on one face to provide the maximum holding force.

Pack quantity 1: 1 Pot magnet

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$45.36
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Technical Specification
Product Description
Rating:
(1)

Product Code:	F4MB60
Shape:	Pot/Disc
Magnetic Face:	60mm dia
Thickness:	14.5mm
Grade:	N42
Plating:	Ni-Cu-Ni ( Nickel )
Material:	NdFeB
Vertical Pull (Kg):	139
Slide Resistance (Kg):	27
Max Temp (degrees C):	80
Fixing:	8mm Cap Head Screw

60mm diameter x 14.5mm thick with a 8mm diameter counter-bored hole for fixing.
2.36 in. diameter x 0.57 in. thick with a 0.32 in. diameter counter-bored hole for fixing.
+/-0.1mm (0.0004 in.) tolerance.
Each magnet is only magnetic on the counter-bored face.
Each magnet can support 139kg (306.5lbs) pull vertically from the magnetic face when in flush contact with a mild steel surface of equal thickness.
Coated with three layers of nickel, copper and nickel to reduce corrosion and provide a smooth finish.
Can be fixed in place with 8mm (0.3 in.) diameter countersunk screws.

These are the largest of our Neodymium counter-bored pot magnet range. Neodymium pot magnets are made of a powerful Neodymium magnet sunken in to a steel shell meaning that the north pole is on the centre of the magnetic face and the south pole is on the outer edge around it. The steel pot increases the adhesive force of the magnets giving them an incredible hold for their size. An added advantage of pot magnets is that they are resistant to chipping or cracking following constant impact with a steel surface. These magnets are counter-bored on the magnetic face and can be fixed to a surface with an 8mm (0.31 in.) screw, pot magnets are also available with countersinks and threaded studs. These magnets come with a safe-handling warning; because they are so powerful they can be dangerous if not handled carefully.

Showing our 1 review for N42 Neodymium Counterbore Pot Magnet - 2-1/4 in. dia x 9/16 in. thick x 5/16 in. hole - 306.5lbs Pull. Write a review ›

Review Summary - 5 out of 5 based on 1 rating.

August 25, 2014 | Chris Dyson

As described

We use this magnet in sports surface testing equipment in order to lift and drop a 46kg mass onto a surface from a hydraulic ram.

This now replaces an electromagnet that was always on during use and had significantly derated over time. It also saves significant portable battery power which was previously used.

Heed the warnings on the box - we have encased this magnet in a protective housing so that hands and such like cant get near the magnet or its movement height along the ram. It will "jump" the 46kg mass up from about 7mm clear of its surface.

Magnet Expert Ltd