Sintered NdFeB Radial Ring

Name: Sintered NdFeB Radial Ring
Rating: 4.5 (95 reviews)

Radial sintered NdFeB magnetic ring can improve the output charateristics and significantly reduce the loss of motor, it has excellent temperature stability, corrosion resistance and Temporal stabilit

Radial Ndfeb ring magnets is developed successfully based on the study of Sintered NdFeB rare earth permanent magnets in many years , and meets different requirements of permanent magnet servo motor, it is using the shaping method by new multipole radiation orientation, on the hypoxic conditions, it is through the research the compositions of NdFeB materials adapt raidal ring, as well as the phase structure, orientation forming, sintering and heat treatment process and the study of magnetizing method.

The process of anisotropic sintered NdFeB radial ring is stablility through batch testing, and suitable for industrial scale production, this innovative products achieve the same products abroad advanced level. The products of this project can be widely used in all kinds of permanent magnet servo motor, step motor, tachogenerators, have the remarkable economic and social benefits.

OD Outer Diameter	ID Inner Diameter	Thinckness	Height	Coating	BH max
Max 150mm	Min 10mm	Min 2mm	Max 50mm	Ni Zn Epoxy	35-50 MGOe

	Ring jointed by the segments	Radial ring ( A complete ring)
Construction	Several segment magnets joint into a ring，then add a protecting cover	The radial ring assemblize ont the bearing directly, no need to add the protecting cover，then add a protecting cover。
Appearance Precision	Assembling by the protecting cover, bearing and several segment magnets, hawing the lower precision	Radial ring directly determines the shape tolerance, the tolerance of outer and inner diameter can achieve +/-0.3mm, and has the good coaxiality and verticality.
Reliability	In some cases, the segments will break away from the bearing	Simple mechanism and good reliability

Density	ρ	7.6	g/cm3
Vicker Hardness		600	HV
Modulus of Elasticity	E	150	Kn/mm²
Compressive Strength		1000	N/mm²
Tensile Strength		78	N/mm²
Flexural Strength		245	N/mm²
Expansion Coeff.	⊥ ρ.ρ.d	-1	10^-6/K
	∥ ρ.ρ.d	5	10^-6/K
Spec.Elec.Resistance	ρ_cl	1.45	10^-6Ω·m
Spec.Heat Capacity	c	440	J/(kg·K)
Thermal Conductivity	λ	8	W/m·K

Features:
1.The cylindrical shape enables higher precision in external dimensions.
2.As a rotor, can achieve uniform magnetic density flux distribution.
3.Fastening the magnet is simple, enabling assembly-related cost reductions.
4.Highly reliability due to enabling rotor construction from a single magnet.
5.Optional magnetization, including free multiple magnetization, skew-type magnetization possible (Radial anisotropic magnet)
6.Can obtain sine surface inductive flux distribution (multi-pole oriented magnet)

Grade	Remanence Br(Gs)	Coercive Force Hcb(Oe)	Intrisinc Coercive Force Hcj(Oe)	Max. Energy(BH)max	Working Temp. TW* (℃)
35H	11500-12300	10500	15500	30-35(MGOe)	120
40H	12200-13100	11000	15500	34-40(MGOe)	120
45H	12600-13800	12000	15500	37-45(MGOe)	120
38M	11800-12800	9800	13500	32-38(MGOe)	120
35SH	11500-12300	11500	18500	30-35(MGOe)	150
38SH	11800-12800	11500	18500	32-38(MGOe)	150
42SH	12300-13400	11500	18500	35-42(MGOe)	150
35UH	11500-12300	10500	23500	30-35(MGOe)	180
40UH	12200-13100	11000	23500	34-40(MGOe)	180