1.Dimension 1) OD ≤150mm, Majority of product less than 60mm 2) ID ≥9mm 3) High(H) ≤100mm,No more than 10 times of thickness
2. Tolerance (mm) 1) OD: Normal: ±0.05, Min: ±0.03 2) ID: Normal: ±0.05, Min: ±0.04; 3) High (H): Normal:±0.1,Min±0.06 4) Concentricity: Normal: ≤0.1,Min: ≤0.05; 5):Surface runout: OD ≤ 30mm, runout ≤0.1mm. OD increase 10mm, runout will increased by 0.1mm accordingly
3. Magnetic Performance Parameters 1)EH Grade: Up to 33 EH 2) UH Grade: Up to 38 UH 3) SH Grade: Up to 42 SH 4) H Grade: Up to 45H 5) M,N grade, up to 45M, 45N.
4. Surface treatment: Epoxy, Ni, NiCuNi, Zn
5. Directions of Magnetization: As per customer’s specific requirement
Application of product: The product can be widely use in all kinds of motors, generator, power tools, automotive EPS motor etc
Advantage of product: 1. Motor assembly is made much easier, installation of one or more rings than gluing arcs into place and no need to add protecting cover, simple and quick. 2. Radial ring directly determines the shape tolerance, the tolerance of outer and inner diameter can achieve ±0.04mm, and has the good coaxiality and verticality. 3. Simple mechanism and good reliability. 4. Improve the motor performance. 5. The radial magnetization increases the ring’s magnetic force, provide a possibility of unique design by truly different magnetic circuit.
Sintered NdFeB rings are available as standard, countersunk ID or radially orientated.
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