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Alnico Magnets

For more than 50 years Storch Magnetics has taken pride in assisting Industry Professionals in proper selection and application of Alnico Magnets. Storch Magnetics provides both standard off-the-shelf and custom Alnico Magnets from prototype to production. Alnico Magnets primary alloy composition consists of Aluminum-Nickel-Cobalt. Alnico Magnets are known for exceptional heat resistance/temperature stability, hard & brittle material while being a low to moderate strength magnet. Storch inventories the following shapes: Bars, Rods, Rails, side Pole Rotors, Rotors, and Horseshoe Magnets.  Precision Magnet Cutting, Grinding, EDM, Fabrication and assembly to your specifications and tolerances quoted upon request.

Alnico Magnets perform well for applications with operating temperatures above 400 degrees F.  The main elements of aluminum, nickel and cobalt are cast to dimensions proven to be of use for many applications such as holding assemblies and sensing devices.

Full length rods and bars can be supplied in shorter lengths. For best results, Alnico lengths should be no less than five times the diameter cross-section.

Features

  • Excellent corrosion resistance
  • Excellent heat resistance & temperature stability

Benefits

  • Operating Temperatures up to 1000°F

Cast Alnico 5 Rod Magnets

Part Number Diameter (“) Length (“)
 A001-0187-5  0.187  5.000 alnico_cast_rod_magnet
 A001-0250-6  0.250  6.000
 A001-0375-6  0.375  6.000
 A001-0437-4  0.437  4.000
 A001-0500-6  0.500  6.000
 A001-0625-6  0.625  6.000
 A001-0750-6  0.750  6.000
 A001-0875-6  0.878  6.000

Tolerance: Dia. +/-.020″, Length +/-.125″, Magnetized thru length, unless 2 poles on 1 face specified.

Ground Alnico 5 Rod Magnets

Part Number Diameter (“) Length (“)
A005-0062-4 0.062 4.000 alnico_ground_rod_magnet
 A005-0093-4  0.093 4.000
 A005-0125-4  0.125 4.000
 A005-0187-6  0.187  6.000
 A005-0218-6  0.218  6.000
 A005-0250-6  0.250  6.000
 A005-0263-6  0.263  6.000
 A005-0312-6  0.312  6.000
 A005-0375-6  0.375  6.000
 A005-0437-6  0.437  6.000
 A005-0500-6  0.500  6.000
 A005-0562-6  0.562  6.000
 A005-0625-6  0.625  6.000
 A005-0687-6  0.687  6.000
 A005-0750-6  0.750  6.000
 A005-0875-6  0.875  6.000
 A005-0937-6  0.937  6.000

Tolerance: Dia. +/-.001″, Length +/-.125″, Magnetized thru length, unless 2 poles on 1 face specified.

Cast Alnico 5 Bar Magnets

Part Number Thickness (“) Width (“) Length (“)
A010-0125-0500 0.125 0.500 4.000 alnico_bar_magnet
 A010-0250-0750  0.250  0.750  6.000
 A010-0500-0750  0.500  0.750  6.000
 A010-0500-1500 0.500  1.500  6.000
 A010-0875-0875 0.875 0.875  6.000
 A010-1000-1000 1.000 1.000  6.000

Tolerance: Thk & Width +/-.020″, Length +/-.125″, Magnetized thru length, unless 2 poles on 1 face specified.

Cast Alnico 5 Ring Magnets

Part Number OD (“) ID (“) Length (“)
A020-0125-0500 2.000 1.500 1.000

Tolerance: Ends ground to +/-.005″, Magnetized thru length, unless 2 poles on 1 face specified.

Alnico 5 Disc Rotor Magnets

Part Number OD (“) ID (“) Length (“)
A023-1500-0375 1.500 0.375 0.375 alnico_disc_rotor

Tolerance: Ends +/-.005″, OD +/-.001″, Magnetism oriented around diameter.

Alnico 5 Rotor Magnets

Part Number OD (“) ID (“) Length (“) # Poles
A025-1000 1.000 0.250 0.750 4 alnico_rotor_magnet
A025-1250 1.250 0.250 0.750 6
A025-2000 2.000 0.500 1.250 8

Tolerance: Back & poles +/-.005″.

Cast Alnico 5 Horseshoes

Part Number Thickness (“) Width (“) Length (“) Hole (“)
A030-1250-1093 0.312 1.250 1.093 0.125 alnico_cast_horseshoe
A030-1500-1312 0.375 1.500  1.312 0.312
A030-1500-1500 0.563 1.500  1.500 none
A030-2000-1750 0.500 2.000  1.750 0.187
A030-2000-2000 0.750 2.000  2.000 none
A030-2500-2500 0.938 2.500  2.500 none
A030-5000-4625 1.250 5.000  4.625 0.468
A030-0719-1094 0.250 0.719  1.094  none
A030-1187-1187 0.375 1.187  1.187  none
A030-1625-1500 0.562 1.625  1.500 none
A030-2000-1375 0.562 2.000  1.375 none
A030-3000-1687 0.750 3.000  1.687 none
Part Number Thickness (“) Width (“) Length (“) Hole (“)
A038-1625 0.843 1.625 0.375 0.250 alnico_cast_horseshoe_2
Part Number Thickness (“) Width (“) Length (“) Hole (“)
A039-0500 0.484 0.500 6.000 none alnico_cast_horseshoe_3

Tolerance: Ground on pole faces, Magnetized as a “U”.

Cast Alnico 5 Round Horseshoe Magnets

Part Number  Diameter (“) Length (“) Hole (“)
A35-0437 0.437 0.437 0.140 alnico_round_horseshoe_magnet_1
A35-0625  0.625 0.625 0.187
A35-0687  0.687 0.687 0.187
A35-0875  0.875 0.875 0.250
A35-1000  1.000 1.000 0.250
Part Number  Diameter (“) Length (“) Hole (“)
A36-0687 0.687 x 0.875 0.625 0.219 alnico_round_horseshoe_magnet_2
Part Number  Diameter (“) Length (“) Hole (“)
A36-1250 1.250 0.750 0.312 alnico_round_horseshoe_magnet_3

Sintered Alnico 2 Horseshoe Magnets

Part Number Thickness (“) Width (“) Length (“)
A234-180 0.187 0.370  0.332 alnico_sintered_horseshoe_magnet_1
Part Number Thickness (“) Width (“) Length (“) Hole (“)
A234-182 0.375 0.750  0.281 0.135 alnico_sintered_horseshoe_magnet_2
A234-183 0.375 0.875 0.375 0.120
Part Number Diameter (“) Length (“) Hole (“)
A235-188 0.400  0.187 0.086 alnico_sintered_horseshoe_magnet_3
Part Number Diameter (“) Length (“)  Channel (“) Hole (“)
A235-193 0.500 0.265 0.140wd x 0.187 0.101 alnico_sintered_horseshoe_magnet_4
A235-194 0.500 0.254 0.119wd x 0.187  0.101

NOTE: Magnets will be shipped MAGNETIZED unless otherwise specified.

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