Square Magnet for Motor

Square Magnet for Motor

Stable magnetic field ensures consistent torque and efficient power conversion in motors
High resistance to demagnetization for long-term durability under motor operating conditions
Excellent temperature stability to maintain performance in high-speed motor environments

High Performance Square Magnet for Motor

Ganci supplies high-coercivity square neodymium magnets for motors, including grades such as N48SH, N52SH, N42UH, and N38EH, designed to meet the demanding requirements of high-performance electric motor applications.

Our square motor magnets deliver high torque, high efficiency, and stable magnetic performance. With high magnetic energy density and tight dimensional tolerances, these magnets enable compact, high-performance motor designs. They are widely used in frameless servo motors, mid-drive motors, industrial automation motors, and other high-efficiency motor systems.

Key Advantages

Stable and reliable magnetic performance
High dimensional consistency for mass production
Uniform magnetic field distribution, supporting smooth motor operation

Applications

Square neodymium magnets are widely used in:

Brushless DC (BLDC) motors
Permanent magnet synchronous motors (PMSM)
Servo motors
Stepper motors
Traction motors
Automotive motors (EPS, pumps, fans)
Industrial automation motors

Customization

We provide fully customized magnet solutions based on customer drawings or specific application requirements, including magnet size, grade selection, surface coating, and magnetization direction. This ensures reliable long-term performance under real operating conditions, rather than standard laboratory test environments.

Properties

Magnetic Properties of Normal Process Magnets

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Type	Grade	Remanence		Intrinsic Coercivity		Magnetic Coercivity		Max. Energy Product (BH)max		Max. Working Temperature
		Br		Hcj		Hcb		(BH)max		L/D=0.7
		T	KGs	kA/m	kOe	kA/m	kOe	kJ/m³	MGOe	℃
N	N35	1.17~1.22	11.7~12.2	≥955	≥12	≥868	≥10.9	263~287	33~36	80
	N38	1.22~1.25	12.2~12.5	≥955	≥12	≥899	≥11.3	287~310	36~39
	N40	1.25~1.28	12.5~12.8	≥955	≥12	≥907	≥11.4	302~326	38~41
	N42	1.28~1.32	12.8~13.2	≥955	≥12	≥915	≥11.5	318~342	40~43
	N45	1.32~1.38	13.2~13.8	≥955	≥12	≥923	≥11.6	342~366	43~46
	N48	1.38~1.42	13.8~14.2	≥955	≥12	≥923	≥11.6	366~390	46~49
	N50	1.40~1.45	14.0~14.5	≥876	≥11	≥955	≥12	382~406	48~51
	N52	1.43~1.48	14.3~14.8	≥876	≥11	≥876	≥11	398~422	50~53
	N54	1.45~1.50	14.5~15.0	≥876	≥11	≥876	≥11	414~438	52~55
	N56	1.48~1.52	14.8~15.2	≥876	≥11	≥836	≥11	414~454	52~57
M	35M	1.17~1.22	11.7~12.2	≥1114	≥14	≥868	≥10.9	263~287	33~36	100
	38M	1.22~1.25	12.2~12.5	≥1114	≥14	≥899	≥11.3	287~310	36~39
	40M	1.25~1.28	12.5~12.8	≥1114	≥14	≥923	≥11.6	302~326	38~41
	42M	1.28~1.32	12.8~13.2	≥1114	≥14	≥955	≥12	318~342	40~43
	45M	1.32~1.38	13.2~13.8	≥1114	≥14	≥995	≥12.5	342~366	43~46
	48M	1.37~1.43	13.7~14.3	≥1114	≥14	≥1027	≥12.9	366~390	46~49
	50M	1.40~1.45	14.0~14.5	≥1114	≥14	≥1033	≥13	382~406	48~51
	52M	1.43~1.48	14.3~14.8	≥1114	≥14	≥1043	≥13.1	398~422	50~53
	54M	1.44~1.49	14.4~14.9	≥1114	≥14	≥1043	≥13.1	398~438	50~55
	56M	1.48~1.53	14.8~15.3	≥1114	≥14	≥1003	≥12.6	422~454	53~57
H	35H	1.17~1.22	11.7~12.2	≥1353	≥17	≥868	≥10.9	263~287	33~36	120
	38H	1.22~1.25	12.2~12.5	≥1353	≥17	≥899	≥11.3	287~310	36~39
	40H	1.25~1.28	12.5~12.8	≥1353	≥17	≥923	≥11.6	302~326	38~41
	42H	1.28~1.32	12.8~13.2	≥1353	≥17	≥955	≥12	318~342	40~43
	45H	1.32~1.37	13.2~13.7	≥1353	≥17	≥973	≥12.3	342~366	43~46
	48H	1.37~1.42	13.7~14.2	≥1353	≥17	≥995	≥12.5	366~390	46~49
	50H	1.40~1.45	14.0~14.5	≥1353	≥17	≥1003	≥12.6	382~406	48~51
	52H	1.42~1.48	14.2~14.8	≥1353	≥17	≥1035	≥13	390~422	49~53
	54H	1.45~1.51	14.5~15.1	≥1353	≥17	≥1035	≥13	406~438	51~55
SH	35SH	1.17~1.22	11.7~12.2	≥1592	≥20	≥876	≥11	263~287	33~36	150
	38SH	1.22~1.25	12.2~12.5	≥1592	≥20	≥907	≥11.4	287~310	36~39
	40SH	1.25~1.28	12.5~12.8	≥1592	≥20	≥939	≥11.8	302~326	38~41
	42SH	1.28~1.32	12.8~13.2	≥1592	≥20	≥963	≥12.1	318~342	40~43
	45SH	1.32~1.38	13.2~13.8	≥1592	≥20	≥979	≥12.3	342~366	43~46
	48SH	1.37~1.43	13.7~14.3	≥1592	≥20	≥1011	≥12.7	366~390	46~49
	50SH	1.39~1.44	13.9~14.4	≥1592	≥20	≥1043	≥13.1	366~406	46~51
UH	28UH	1.04~1.08	10.4~10.8	≥1990	≥25	≥764	≥9.6	207~231	26~29	180
	30UH	1.08~1.13	10.8~11.3	≥1990	≥25	≥812	≥10.2	223~247	28~31
	33UH	1.13~1.17	11.3~11.7	≥1990	≥25	≥852	≥10.7	247~271	31~34
	35UH	1.17~1.22	11.7~12.2	≥1990	≥25	≥860	≥10.8	263~287	33~36
	38UH	1.22~1.25	12.2~12.5	≥1990	≥25	≥890	≥11.3	287~310	36~39
	40UH	1.25~1.28	12.5~12.8	≥1990	≥25	≥939	≥11.8	302~326	38~41
	42UH	1.28~1.32	12.8~13.2	≥1990	≥25	≥963	≥12.1	318~342	40~43
	45UH	1.32~1.38	13.2~13.8	≥1990	≥25	≥979	≥12.3	342~366	43~46
EH	28EH	1.04~1.08	10.4~10.8	≥2388	≥30	≥780	≥9.8	207~231	26~29	200
	30EH	1.08~1.13	10.8~11.3	≥2388	≥30	≥812	≥10.2	223~247	28~31
	33EH	1.13~1.17	11.3~11.7	≥2388	≥30	≥836	≥10.5	247~271	31~34
	35EH	1.17~1.22	11.7~12.2	≥2388	≥30	≥876	≥11	263~287	33~36
	38EH	1.22~1.25	12.2~12.5	≥2388	≥30	≥899	≥11.3	287~310	36~39
	40EH	1.25~1.28	12.5~12.8	≥2388	≥30	≥923	≥11.6	302~326	38~41
	42EH	1.28~1.32	12.8~13.2	≥2388	≥30	≥931	≥11.7	318~342	40~43
AH	28AH	1.04~1.08	10.4~10.8	≥2624	≥33	≥787	≥9.9	207~231	26~29	230
	30AH	1.08~1.13	10.8~11.3	≥2624	≥33	≥819	≥10.3	223~247	28~31
	33AH	1.13~1.17	11.3~11.7	≥2624	≥33	≥843	≥10.6	247~271	31~34
	35AH	1.17~1.22	11.7~12.2	≥2624	≥33	≥876	≥11	263~287	33~36
	38AH	1.22~1.25	12.2~12.5	≥2624	≥33	≥896	≥11.3	287~310	36~39
	40AH	1.25~1.28	12.5~12.8	≥2624	≥33	≥923	≥11.6	302~326	38~41

Notes

* Ganci Materials can produce magnets of special performance according to customers’ requirements.

Magnetic Properties of Grain Boundary Diffusion Process Magnets

Grade	Remanence		Intrinsic Coercivity		Magnetic Coercivity		Max. Energy Product (BH)max		Max. Working Temperature
	Br		Hcj		Hcb		(BH)max		L/D=0.7
	T	KGs	kA/m	kOe	kA/m	kOe	kJ/m³	MGOe	℃
G52H	1.41~1.47	14.1~14.7	≥1353	≥17	≥1050	≥13.2	398~422	50~53	≤120
G54H	1.45~1.48	14.5~14.8	≥1353	≥17	≥1090	≥13.7	406~438	51~55	≤120
G45SH	1.32~1.37	13.2~13.7	≥1592	≥20	≥1003	≥12.6	342~366	43~46	≤150
G48SH	1.37~1.43	13.7~14.3	≥1592	≥20	≥1035	≥13	366~390	46~49	≤150
G50SH	1.40~1.45	14.0~14.5	≥1592	≥20	≥1035	≥13	382~406	48~51	≤150
G52SH	1.43~1.45	14.3~14.5	≥1592	≥20	≥1050	≥13.2	406~430	51~54	≤150
G54SH	1.45~1.48	14.5~14.8	≥1592	≥20	≥1059	≥13.3	406~438	51~55	≤150
G40UH	1.26~1.31	12.6~13.1	≥1990	≥25	≥907	≥11.4	302~326	38~41	≤180
G42UH	1.28~1.34	12.8~13.4	≥1990	≥25	≥907	≥11.4	318~342	40~43	≤180
G45UH	1.30~1.36	13.0~13.6	≥1990	≥25	≥1003	≥12.6	342~366	43~46	≤180
G48UH	1.37~1.43	13.7~14.3	≥1990	≥25	≥1035	≥13	366~390	46~49	≤180
G50UH	1.40~1.45	14.0~14.5	≥1990	≥25	≥1035	≥13	382~406	48~51	≤180
G52UH	1.42~1.45	14.2~14.5	≥1990	≥25	≥1035	≥13	390~422	49~53	≤180
G38EH	1.22~1.27	12.2~12.7	≥2388	≥30	≥907	≥11.4	287~310	36~39	≤200
G40EH	1.26~1.31	12.6~13.1	≥2388	≥30	≥907	≥11.4	302~326	38~41	≤200
G42EH	1.28~1.32	12.8~13.2	≥2388	≥30	≥907	≥11.4	318~342	40~43	≤200
G45EH	1.30~1.36	13.0~13.6	≥2388	≥30	≥1003	≥12.6	342~366	43~46	≤200
G48EH	1.37~1.43	13.7~14.3	≥2388	≥30	≥1035	≥13	366~390	46~49	≤200
G50EH	1.39~1.44	13.9~14.4	≥2388	≥30	≥1043	≥13.1	374~406	47~51	≤200
G35AH	1.16~1.23	11.6~12.3	≥2786	≥35	≥812	≥10.2	263~287	33~36	≤220
G38AH	1.22~1.25	12.2~12.5	≥2786	≥35	≥907	≥11.4	287~310	36~39	≤220
G40AH	1.26~1.31	12.6~13.1	≥2786	≥35	≥907	≥11.4	302~326	38~41	≤220
G42AH	1.28~1.34	12.8~13.4	≥2786	≥35	≥907	≥11.4	318~342	40~43	≤220
G45AH	1.33~1.38	13.3~13.8	≥2786	≥35	≥1003	≥12.6	334~366	42~46	≤220

Product Dimension

Shape	Diagram	Dimension(mm）		Max. Dimension(mm）
Block		L	≤180	L	≤220
		W	≤120	W	≤150
		H	≤60	H	≤80
Cylinder		D	≤150	D	≤220
Cylinder		H	≤60	H	≤80
Ring		D	≤120	D	≤160
		d	≤80	d	≤100
		L	≤45	L	≤45
Segment		L	≤180	L	≤220
		W	≤120	W	≤150
		T	≤60	T	≤80
		α	0~180°

Surface Treatment

Coating type	Color	/µm Thickness	SST/h	PCT/h	Working Temp/°C	Performance
Zn	Blue/White	5-10	≥48h		<160°C	Good corrosion resistance
Color Zn	Multiple colors	5-10	≥72h		<160°C	Good corrosion resistance
NICUNI	Silver white	10-30	≥72h	≥96h	<200°C	Very good corrosion resistance, thermal resistance and moisture resistance
PVD Aluminum	Silver white	5-25	≥96h	≥240h	<390°C	Very good corrosion resistance, thermal resistance and moisture resistance
Phosphate	–	–	–	–	<250°C	Low corrosion resistance performance
Epoxy	Black/Grey	10-30	≥480h	≥96h	<180°C	Excellent corrosion resistance, non-conductive
Multi-layer coating	–	–	≥1000h	≥480h	–	Excellent corrosion resistance

Notes

This performance might vary according to different dimension of product.
Multi-layer coating is a combination of different type of coatings, and its color, thickness and working temperature might vary from different combinations.
PCT test conditions: 121 degrees Celsius, 100% humidity, 2atms.

Magnetization

Square Magnet Magnetization

Thickness Magnetization

Disc Magnet Magnetization

Thickness Magnetization

Arc Magnet Magnetization

Thickness Magnetization

Applications

Our multi-Section Arc Magnets are widely used across a broad range of applications, including：

Robot Application

Electric Motorcycle Application

Consuming Electronic Application

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