D25x8mm Neodymium Magnet, 25 x 8mm Disc Magnet

Item No.: D25x8mm
Material: NdFeB, Grade N42
Shape: Disc
Dimension: 25mm dia. x 8mm thick
Tolerances: ±0.1mm x ±0.1mm
Weight: 29.452g
Grade: N42
Coating: Ni-Cu-Ni (Nickel)
Pull Force(lbs): 27.76 lbs (12.62kg)
Surface Field(Gauss): 3558 Gauss
Magnetization direction: Axial (Poles on Flat Ends)
Max Operating Temp: 80°C
Product Drawing: PDF drawing of D25x8mm · JPEG drawing of D25x8mm

Other Grade D25x8mm Neodymium Magnets (25mm dia. x 8mm thick):

Grade Item No. Product Name Pull Force Inquiry
N35 ALB-D25x8mm-N35 D25x8mm-N35 Neodymium Magnets 23.32 lbs (10.60kg) Inquiry
N38 ALB-D25x8mm-N38 D25x8mm-N38 Neodymium Magnets 23.32 lbs (10.60kg) Inquiry
N40 ALB-D25x8mm-N40 D25x8mm-N40 Neodymium Magnets 25.29 lbs (11.50kg) Inquiry
N42 ALB-D25x8mm D25x8mm Neodymium Magnets 27.76 lbs (12.62kg) Inquiry
N45 ALB-D25x8mm-N45 D25x8mm-N45 Neodymium Magnets 29.46 lbs (13.39kg) Inquiry
N48 ALB-D25x8mm-N48 D25x8mm-N48 Neodymium Magnets 31.22 lbs (14.19kg) Inquiry
N50 ALB-D25x8mm-N50 D25x8mm-N50 Neodymium Magnets 32.12 lbs (14.60kg) Inquiry
N52 ALB-D25x8mm-N52 D25x8mm-N52 Neodymium Magnets 33.03 lbs (15.02kg) Inquiry
N42SH ALB-D25x8mmSH D25x8mmSH Neodymium Magnets 27.76 lbs (12.62kg) Inquiry

High Temperature D25x8mm Neodymium Magnets (25mm dia. x 8mm thick) are also available:

Neodymium Material Type Maximum Operating Temp Curie Temp
N (N35-N52) 176°F (80°C) 590°F (310°C)
NM (N35M-N52M) 212°F (100°C) 644°F (340°C)
NH (N33H-N52H) 248°F (120°C) 644°F (340°C)
NSH (N30SH-N50SH) 302°F (150°C) 644°F (340°C)
NUH (N28UH-N48UH) 356°F (180°C) 662°F (350°C)
NEH (N28EH-N48EH) 392°F (200°C) 662°F (350°C)
NAH (N28AH-N35AH) 428°F (220°C) 662°F (350°C)

The Thermal Characteristics listed above are values commonly associated with each magnet's grade or material.  Actual performance in your application may vary with other factors, including the shape of the magnet, the Permeance Coefficient or load line, and how it is used in a circuit.  

D25x8mm Neodymium Magnets (25mm dia. x 8mm thick) with other Coating are also available:

Coating Type Overall Thickness Salt Spray Test Pressure Cooker Test
Ni-Cu-Ni (Nickel) 15-21 μm 24 hours 48 hours
NiCu + Black Nickel 15-21 μm 24 hours 48 hours
NiCuNi + Epoxy 20-28 μm 48 hours 72 hours
NiCuNi + Gold 16-23 μm 36 hours 72 hours
NiCuNi + Silver 16-23 μm 24 hours 48 hours
Zinc 7-15 μm 12 hours 24 hours

Each individual layer of Nickel and Copper are 5-7 μm thick. The Gold and Silver Coating layers are 1-2 μm thick. Test results shown to allow comparison between Coating options. Performance in your application under your specific test conditions may vary. Salt Spray testing conducted with a 5% NaCl solution, at 35°C. Pressure Cooker Test (PCT) conducted at 2 atm, 120°C at 100% RH.

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