Magnet quality

Holding force

Diameter

Pot magnets cylindrical

These pot magnets are suitable for gluing, pressing and shrinking.

Thanks to the shell of these pot magnets, the magnetic field strength increases and they are more resistant to corrosion or chemicals. Pot magnets have a single attraction surface; this prevents the spread of the magnetic field.

Pot magnets cylindrical are available in various sizes and types such as neodymium, samarium cobalt and AlNiCo.

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Neodymium The strongest magnet type

3 variants
Product variant

Neodymium (NdFeB) 6 mm

€ 3,74

PM-BA-N-BR-D6h6x20
Article number GM17301
Stock 28
Height 20 mm
Holding force 10 N
Material housing Brass
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Product variant

Neodymium (NdFeB) 8 mm

€ 4,11

PM-BA-N-BR-D8h6x20
Article number GM17302
Stock 40
Height 20 mm
Holding force 25 N
Material housing Brass
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Product variant

Neodymium (NdFeB) 10 mm

€ 4,77

PM-BA-N-BR-D10h6x20
Article number GM17303
Stock 33
Height 20 mm
Holding force 40 N
Material housing Brass
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What does a neodymium pot magnet consist of?

These super-strong pot magnets are made of the alloy neodymium-iron-boron (NdFeB), which Goudsmit markets under the brand name Neoflux®. The shell - or pot - provides magnetic shielding. Goudsmit supplies neodymium pot magnets with a brass or steel shell. The holding surface has a protective coating to prevent corrosion.

 

Neodymium pot magnet high | Goudsmit Magnetics

What temperature does magnet strength loss occur at?

Neodymium cylindrical and flat pot magnets have an operating temperature of up to 80 °C. When heated to this temperature, the magnet loses 15 to 20% of its magnetic strength. This is not permanent; the force is restored when the magnet returns to the normal ambient temperature.

External magnetic fields may also cause loss of magnetic force. An air gap or non-magnetic materials located between the magnet and workpiece reduce the tensile force.

Neodymium pot magnet high | Goudsmit Magnetics

Loss of holding force

To prevent loss of holding force due to magnetic short-circuit, neodymium magnets with a brass shell may not be pressed directly into iron. Always maintain a certain distance between the brass shell of the pot magnet and the iron. Contact Goudsmit for specific recommendations.

 

Tooling the magnet without loss of tensile force:

The magnet strength remains the same when the magnet system is shortened down to a maximum value of A. See the specified value for the relevant item.

Pot magnet cylindrical | Goudsmit Magnetics

Neodymium (continued) The strongest magnet type

6 variants
Product variant

Neodymium (NdFeB) 13 mm

€ 5,81

PM-BA-N-BR-D13h6x20
Article number GM17304
Stock 45
Height 20 mm
Holding force 70 N
Material housing Brass
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Product variant

Neodymium (NdFeB) 16 mm

€ 7,36

PM-BA-NB-BR-D16h6x20-B
Article number GM17305
Stock 129
Height 20 mm
Holding force 150 N
Material housing Brass
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Product variant

Neodymium (NdFeB) 20 mm

€ 9,69

PM-BA-N-BR-D20h6x25
Article number GM17306
Stock 31
Height 25 mm
Holding force 280 N
Material housing Brass
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Product variant

Neodymium (NdFeB) 25 mm

€ 18,91

PM-BA-N-BR-D25h6x35
Article number GM17307
Stock 57
Height 35 mm
Holding force 450 N
Material housing Brass
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Product variant

Neodymium (NdFeB) 32 mm

€ 37,44

PM-BA-N-BR-D32h6x40
Article number GM17308
Stock 3
Height 40 mm
Holding force 700 N
Material housing Brass
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Product variant

Neodymium (NdFeB) 20 mm

€ 10,66

PM-TI-N-BR-D20(h6)x25xM6x6
Article number GM17326
Stock 0
Height 25 mm
Holding force 280 N
Material housing Brass
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Samarium cobalt High magnetic force at high operating temperature

3 variants
Product variant

Samarium-Cobalt (SmCo) 6 mm

€ 3,32

PM-BA-S-BR-D6h6x20
Article number GM17001
Stock 68
Height 20 mm
Holding force 8 N
Material housing Brass
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Product variant

Samarium-Cobalt (SmCo) 8 mm

€ 3,81

PM-BA-S-BR-D8h6x20
Article number GM17002
Stock 22
Height 20 mm
Holding force 22 N
Material housing Brass
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Product variant

Samarium-Cobalt (SmCo) 10 mm

€ 4,65

PM-BA-S-BR-D10h6x20-HQ
Article number GM17003
Stock 88
Height 20 mm
Holding force 40 N
Material housing Brass
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What does a pot magnet of samarium cobalt consist of?

Samarium cobalt pot magnets offer the unique combination of high magnetic force and high operating temperature. These super-strong pot magnets are made of an alloy of samarium and cobalt. The holding force at room temperature is 5 times higher than that of ferrite pot magnets. With the exception of Neoflux® pot magnets, samarium cobalt pot magnets are the strongest that Goudsmit has in its product range.

Samarium cobalt pot magnet in steel housing | Goudsmit Magnetics

When does loss of magnetic strength occur?

Samarium cobalt pot magnets have an operating temperature of up to 200 °C. When heated to this temperature, the magnet loses 15 to 20% of its magnetic strength. This is not permanent; the force is restored when the magnet temperature returns to the normal ambient temperature. The magnet force of these pot magnets is lower than that of neodymium pot magnets.

External magnetic fields may also cause loss of magnetic force. An air gap or non-magnetic materials located between the magnet and workpiece reduce the tensile force.

Samarium cobalt pot magnet in steel housing | Goudsmit Magnetics

Installation and demagnetization

The steel pot of samarium cobalt pot magnets does not offer magnetic shielding. Therefore, these pot magnets may not be built into steel components without taking special measures. The distance between the steel component and the magnet system must be 1.5 to 6 mm, depending on the size of the pot magnet.

Samarium cobalt pot magnets are very stable and are difficult to demagnetize in a strong alternating current field.

The magnet strength remains the same when the magnet system is shortened down to a maximum value of A. See the specified value for the relevant item.

Pot magnet cylindrical | Goudsmit Magnetics

Samarium cobalt (continued) High magnetic force at high operating temperature

5 variants
Product variant

Samarium-Cobalt (SmCo) 13 mm

€ 6,11

PM-BA-S-BR-D13h6x20
Article number GM17004
Stock 3
Height 20 mm
Holding force 60 N
Material housing Brass
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Product variant

Samarium-Cobalt (SmCo) 16 mm

€ 8,62

PM-BA-S-BR-D16h6x20
Article number GM17005
Stock 21
Height 20 mm
Holding force 125 N
Material housing Brass
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Product variant

Samarium-Cobalt (SmCo) 20 mm

€ 12,59

PM-BA-S-BR-D20h6x25
Article number GM17006
Stock 0
Height 25 mm
Holding force 230 N
Material housing Brass
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Product variant

Samarium-Cobalt (SmCo) 25 mm

€ 26,85

PM-BA-S-BR-D25h6x35
Article number GM17007
Stock 0
Height 35 mm
Holding force 400 N
Material housing Brass
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Product variant

Samarium-Cobalt (SmCo) 32 mm

Price on request

PM-BA-S-BR-D32h6x40
Article number GM17008
Stock 0
Height 40 mm
Holding force 600 N
Material housing Brass
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AlNiCo Very high operating temperature

3 variants
Product variant

AlNiCo 6 mm

€ 3,84

PM-BM-A-ST-D6h6x10
Article number GM16001
Stock 117
Height 10 mm
Holding force 2 N
Material housing Steel
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Product variant

AlNiCo 8 mm

€ 4,22

PM-BM-A-ST-D8h6x12
Article number GM16002
Stock 32
Height 12 mm
Holding force 4 N
Material housing Steel
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Product variant

AlNiCo 10 mm

€ 4,75

PM-BM-A-ST-D10h6x16
Article number GM16003
Stock 21
Height 16 mm
Holding force 8.5 N
Material housing Steel
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What does an AlNiCo pot magnet consist of?

AlNiCo pot magnets are made of an alloy of aluminium, nickel and cobalt. They are encased in a steel pot, with a non-magnetizable material - brass or aluminium - in between.
AlNiCo pot magnets have a very high operating temperature.

AlNiCo pot magnet in steel housing | Goudsmit Magnetics

What temperature does magnet strength loss occur at?

AlNiCo pot magnets have a very high operating temperature of up to 450 °C. When heated to this temperature, the magnet loses 30 to 40% of its magnetic force. This is not permanent; the force is restored when the pot magnet cools down to ambient temperature.

External magnetic fields may also cause loss of magnetic force. An air gap or non-magnetic materials located between the magnet and workpiece reduce the tensile force.

AlNiCo pot magnet in steel housing | Goudsmit Magnetics

Corrosion-resistant

Alnico pot magnets do not corrode and are very suitable for use at high temperatures.

The magnet strength remains the same when the magnet system is shortened down to a maximum value of A.

See the specified value for the relevant item.

AlNiCo pot magnet in steel housing | Goudsmit Magnetics

AlNiCo (continued) Very high operating temperature

10 variants
Product variant

AlNiCo 13 mm

€ 5,44

PM-BM-A-ST-D13h6x18
Article number GM16004
Stock 0
Height 18 mm
Holding force 12 N
Version Flat
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Product variant

AlNiCo 16 mm

€ 6,48

PM-BM-A-ST-D16h6x20
Article number GM16005
Stock 0
Height 20 mm
Holding force 20 N
Version Flat
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Product variant

AlNiCo 20 mm

€ 8,10

PM-BM-A-ST-D20h6x25
Article number GM16006
Stock 14
Height 25 mm
Holding force 40 N
Version Flat
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Product variant

AlNiCo 25 mm

€ 11,87

PM-BM-A-ST-D25h6x30
Article number GM16007
Stock 0
Height 30 mm
Holding force 60 N
Version Flat
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Product variant

AlNiCo 32 mm

€ 23,84

PM-BM-A-ST-D32h6x35
Article number GM16008
Stock 0
Height 35 mm
Holding force 160 N
Version Flat
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Product variant

AlNiCo 6 mm

€ 3,39

PM-BM-A-SG-D6x20
Article number GM16101
Stock 0
Height 20 mm
Holding force 2 N
Version Flat
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Product variant

AlNiCo 8 mm

€ 3,78

PM-BM-A-SG-D8x20
Article number GM16102
Stock 5
Height 20 mm
Holding force 4 N
Version Flat
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Product variant

AlNiCo 13 mm

€ 4,32

PM-BM-A-SG-D13x20
Article number GM16104
Stock 0
Height 20 mm
Holding force 12 N
Version Flat
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