D70x40mm Neodymium Magnet, 70 x 40mm Disc Magnet

Item No.: D70x40mm
Material: NdFeB, Grade N42
Shape: Disc
Dimension: 70mm dia. x 40mm thick
Tolerances: ±0.1mm x ±0.1mm
Weight: 1154.535g
Grade: N42
Coating: Ni-Cu-Ni (Nickel)
Pull Force(lbs): 388.60 lbs (176.64kg)
Surface Field(Gauss): 4967 Gauss
Magnetization direction: Axial (Poles on Flat Ends)
Max Operating Temp: 80°C
Product Drawing: PDF drawing of D70x40mm · JPEG drawing of D70x40mm

Other Grade D70x40mm Neodymium Magnets (70mm dia. x 40mm thick):

Grade Item No. Product Name Pull Force Inquiry
N35 ALB-D70x40mm-N35 D70x40mm-N35 Neodymium Magnets 326.53 lbs (148.42kg) Inquiry
N38 ALB-D70x40mm-N38 D70x40mm-N38 Neodymium Magnets 326.53 lbs (148.42kg) Inquiry
N40 ALB-D70x40mm-N40 D70x40mm-N40 Neodymium Magnets 354.07 lbs (160.94kg) Inquiry
N42 ALB-D70x40mm D70x40mm Neodymium Magnets 388.60 lbs (176.64kg) Inquiry
N45 ALB-D70x40mm-N45 D70x40mm-N45 Neodymium Magnets 412.51 lbs (187.50kg) Inquiry
N48 ALB-D70x40mm-N48 D70x40mm-N48 Neodymium Magnets 437.13 lbs (198.69kg) Inquiry
N50 ALB-D70x40mm-N50 D70x40mm-N50 Neodymium Magnets 449.71 lbs (204.41kg) Inquiry
N52 ALB-D70x40mm-N52 D70x40mm-N52 Neodymium Magnets 462.46 lbs (210.21kg) Inquiry
N42SH ALB-D70x40mmSH D70x40mmSH Neodymium Magnets 388.60 lbs (176.64kg) Inquiry

High Temperature D70x40mm Neodymium Magnets (70mm dia. x 40mm 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.  

D70x40mm Neodymium Magnets (70mm dia. x 40mm 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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