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Generally speaking, the way to measure the magnetic force of permanent magnets can be quantitatively managed in the following forms:

1. Total magnetic flux (unit: Weber/Maxwell)

2. The surface Gauss value (unit: Gauss/mT)

3. Attractive force (unit: kgf/N)

4. Torque size (motor output)

5. Speed level (motor output)

These parameters vary by the type of magnet, material grade, shape, size, magnetic circuit type and operating temperature, and effective distance. The types of permanent magnets are different according to the material. The common ones are NdFeB, ferrite, SmFeN, SmCo, AlNiCo, etc. Magnets of the same material will also show different grades due to the content of elements. Magnet manufacturers process magnets of specified sizes (round, square, ring, magnetic tile) according to the manufacturer's order, so the difference in size also determines the difference in magnetic force. At the same time, magnets of the same size, because the design of the magnetic circuit type is different (magnetization direction, number of magnetization poles, magnetization angle。

NdFeB bonded magnets

Dimensions size:φ1~φ150

shapes:ring,cylinder,block,ball,special shape

Tolerances：ISO 2768-mK

Residual lnduction：0.3-0.78T

Coercive Force ：192-480kA/m

Intrinsic Coercive Force：480-1280kA/m

Max.Energy Product：16-104kJ/m3

Permeabilily：1.2μH/m

Temperature Coefficient of B(%/℃) -0.11

Curie Temperature：320℃

Max.Operating Temperature：80-160℃