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faq
question
What are the factors to be considered when selecting motor magnetic steel?
Answer
First, we shall learn the insulation grade of electric motor, determine the magnetic steel grades and specifications, and then select the appropriate magnetic steel based on the general consideration of magnetic steel grades and specifications and the costs of motor copper wire, silicon steel sheet, etc. If the magnetic steel grade is too high, the cost will be too high; if the grade is too low, the motor may be subject to the risk of excitation loss.
question
What is the tolerance of the permanent magnets?
Answer
It’s ± 0.04 mm when galvanized, and ± 0.05 mm under nickel plated.
question
What is the tolerance of high-speed magnetic ring?
Answer
Taking the high-speed magnetic ring produced by our company as an example, D11.5 OD tolerance is ± 0.025, and the ID tolerance is ± 0.02 mm.
question
What are the temperature-resistance factors of the magnetic materials?
Answer
There are many temperature-resistance factors of magnets, magnetic properties (such as coercive force, square degree) as the major factors, and the shape, specification, magnetic circuit state when baking (open, semi-open circuit, closed circuit) as minor factors.
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