What sizes are available?
These magnets are available in six sizes: 1/4", 3/8", 1/2", 5/8", 3/4" and 1".
99K3101 - 1/4" × 1/10" Rare-Earth Magnet, each
Diameter:
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Until you have actually used rare-earth magnets, you cannot appreciate their strength. The strength of these magnets has to do with the electron array in the neodymium, the rare earth they are made from. This force only increases with the magnet’s size.
There are hundreds of uses for these magnets – from holding keys or wrenches on machines to making fridge magnets. Nickel plated with slightly rounded edges, they can be glued in place with almost any glue (epoxy is the most secure).
The smaller sizes are sold individually. The 3/4" and 1" diameter magnets are so powerful that only people with very strong hands can separate them without using an aid of some kind. The odd one may have a minor chip in it since collisions can happen easily at these power levels. This presents a handling problem for us, so we sell them only in bundles of five, with instructions for simple separation methods.
The magnets achieve maximum attractive force when sandwiched between two pieces of steel.
The 1/4" diameter by 1/10" thick magnet will lift a 2 1/2 lb block of steel; the 3/8" diameter by 1/10" thick magnet will lift a 5 lb block; the 1/2" diameter by 1/8" thick magnet will lift a 9 lb block; the 3/4" diameter by 1/8" thick magnet will lift a 22 lb block; the 1" diameter by 1/8" thick magnet will lift a 30 lb block.
These magnets are available in six sizes: 1/4", 3/8", 1/2", 5/8", 3/4" and 1".
Maximum attractive force is achieved when the magnet is sandwiched between two pieces of steel.
The stated lift capacities are 2 1/2 lb for 1/4", 5 lb for 3/8", 9 lb for 1/2", 22 lb for 3/4" and 30 lb for 1". A lift capacity for the 5/8" size is not specified.
Rare-earth magnets can be separated by sliding them apart.
Related products listed for these magnets include Steel Cups for Rare-Earth Magnets, Steel Washers for Rare-Earth Magnets, Panel Magnet Cups and High-Friction Discs for Rare-Earth Magnets.
Epoxy is the most secure option for gluing these magnets in place. Water-based adhesives, including PVA and other woodworking glues, do not bond reliably to the nickel-plated surface. For mechanical mounting, try our Panel Magnet Cups.
Steel Cups for Rare-Earth Magnets concentrate the magnetic field to one face, increasing pull force in that direction while reducing lateral attraction. Steel Washers increase the effective surface area for gluing. Both are available separately in sizes matched to each magnet diameter.
Dimensions | 1/4" x 1/10” 3/8" x 1/10” 1/2" x 1/8” 5/8” x 1/8” 3/4" x 1/8” 1" x 1/8” |
Materials | Neodymium core (rare-earth); Nickel plating |
Lift capacity | 1/4" – 2 1/2 lb (1.1 kg) 3/8" – 5 lb (2.3 kg) 1/2" – 9 lb (4.1 kg) 5/8” – 3/4" – 22 lb (10 kg) 1" – 30 lb (13.6 kg) |
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Rare-Earth Circular Magnets
Until you have actually used rare-earth magnets, you cannot appreciate their strength. The strength of these magnets has to do with the electron array in the neodymium, the rare earth they are made from. This force only increases with the magnet’s size.
There are hundreds of uses for these magnets – from holding keys or wrenches on machines to making fridge magnets. Nickel plated with slightly rounded edges, they can be glued in place with almost any glue (epoxy is the most secure).
The smaller sizes are sold individually. The 3/4" and 1" diameter magnets are so powerful that only people with very strong hands can separate them without using an aid of some kind. The odd one may have a minor chip in it since collisions can happen easily at these power levels. This presents a handling problem for us, so we sell them only in bundles of five, with instructions for simple separation methods.
The magnets achieve maximum attractive force when sandwiched between two pieces of steel.
The 1/4" diameter by 1/10" thick magnet will lift a 2 1/2 lb block of steel; the 3/8" diameter by 1/10" thick magnet will lift a 5 lb block; the 1/2" diameter by 1/8" thick magnet will lift a 9 lb block; the 3/4" diameter by 1/8" thick magnet will lift a 22 lb block; the 1" diameter by 1/8" thick magnet will lift a 30 lb block.
