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Permanent Magnet Stepper Motors

Permanent magnet stepper motors use a permanent magnet (PM) in the rotor and operate on the attraction or repulsion between the rotor PM and the stator electromagnets. The step angle for permanent magnet stepping motors is usually 3.75 degrees, 7.5 degrees, 15 degrees, or 18 degrees, depending on the model. They are generally two-phase, have low torque and volume, and have a small step angle. MOONS' PM stepper motors are widely applied in many innovative applications, including computer equipment, photographic systems, optoelectronic devices, valve control, ATM equipment, CNC machine, automatic winding machines, electronic clocks, and medical equipment.

What is a Permanent Magnet Stepper Motor?

The PM motor is an inner rotor type motor, and the outer surface of the cylindrical rotor is evenly distributed with N and S poles.

What are the differences between PM and VR and Hybrid stepper motors?

Comparison of performance parameters of PM motor and VR, Hybrid stepping motor.

Technical about Rated Current

Rated current of PM stepper is limited by thermal characteristics.

8mm Permanent Magnet Stepper Motors

Miniature Permanent Magnet DC Stepper Motor, Small Size, 8mm Diameter, 2 phase, 18°

Item	Phase	Length (mm)	Rated Current (A)	Holding Torque (mNm)	Holding Torque (Nm)	Holding Torque (oz-in)	Coil Type	Price (USD)	Compare
8PM020S1-02001	2	8.5	0.25	0.4	4.0E-4	0.06	Bi-Polar	$40.00

10mm Permanent Magnet Stepper Motors

Miniature Permanent Magnet DC Stepper Motor, Small Size, 10mm Diameter, 2 phase, 18°

Item	Phase	Length (mm)	Rated Current (A)	Holding Torque (mNm)	Holding Torque (Nm)	Holding Torque (oz-in)	Coil Type	Price (USD)	Compare
10PM020S1-04001	2	8.8	0.2	0.5	5.0E-4	0.07	Bi-Polar	$43.00

15mm Permanent Magnet Stepper Motors

Miniature Permanent Magnet Stepper Motors, Small Size, 15mm Diameter, 2 phase

Item	Phase	Nominal Voltage	Length (mm)	Holding Torque (mNm)	Holding Torque (Nm)	Reduction Ratio	Holding Torque (oz-in)	Coil Type	Price (USD)	Compare
PG15L0050-15P020S0-02	2	5Vdc	22.5	49	0.05	01:50	6.95	Bi-Polar	$28.80
15PM020S0-01002	2	5Vdc	11.35	3.6	0.0036			Bi-Polar	$20.50

20mm Permanent Magnet Stepper Motors

Miniature Permanent Magnet DC Stepper Motor, Small Size, 20mm Diameter, 2 phase, 18°

Item	Phase	Nominal Voltage	Length (mm)	Rated Current (A)	Holding Torque (mNm)	Holding Torque (Nm)	Reduction Ratio	Holding Torque (oz-in)	Coil Type	Price (USD)
20PM020S0-01002	2		14.3	0.33	8.5	0.0085		1.18	Bi-Polar	$23.50
20PM020S0-02501	2		14.3	0.21	8.5	0.0085		1.18	Bi-Polar	$23.50
20PM020L6-00702	2		19.3	0.43	12	0.012		1.67	Bi-Polar	$24.57
20PM020L6-02101	2		19.3	0.25	12	0.012		1.67	Bi-Polar	$24.57
PG22L45.2-20PM020L0-22	2	30Vdc	60	0.5	200	0.2	45.2	28.32	Bi-Polar	$45.00
PG22L71.7-20PM020L0-21	2	30Vdc	55	0.46	420	0.42	71.7	59.47	Bi-Polar	$55.00

25mm Permanent Magnet Stepper Motors

Miniature Permanent Magnet DC Stepper Motor, Small Size, 25mm Diameter, 2 phase

Item	Phase	Length (mm)	Rated Current (A)	Holding Torque (mNm)	Holding Torque (oz-in)	Coil Type	Price (USD)
25PM024S0-00601	2	12.5	0.5	10	1.39	Bi-Polar	$22.95
25PM024S0-01602	2	12.5	0.32	11	1.53	Bi-Polar	$22.95
25PM048S8-00601	2	12.5	0.5	16	2.22	Bi-Polar	$22.95
25PM048S8-01601	2	12.5	0.32	16	2.22	Bi-Polar	$22.95
25PM024L6-00801	2	17	0.47	17	2.36	Bi-Polar	$23.99
25PM024L6-01401	2	17	0.35	18	2.5	Bi-Polar	$23.99
25PM048L8-00801	2	17	0.47	25	3.47	Bi-Polar	$23.99
25PM048L8-01401	2	17	0.35	27	3.75	Bi-Polar	$23.99

35mm Permanent Magnet Stepper Motors

Permanent Magnet Stepper Motor, Small Size, 35mm Diameter, 2 phase

Item	Phase	Length (mm)	Rated Current (A)	Holding Torque (mNm)	Holding Torque (oz-in)	Coil Type	Price (USD)
35PM024S8-00502	2	15.3	0.6	22	3.06	Bi-Polar	$24.43
35PM024S8-01201	2	15.3	0.38	22	3.06	Bi-Polar	$24.43
35PM024S8-08001	2	15.3	0.15	22	3.06	Bi-Polar	$24.43
35PM048S0-00508	2	15.3	0.6	48	6.67	Bi-Polar	$24.43
35PM048S0-01203	2	15.3	0.38	46	6.39	Bi-Polar	$24.43
35PM048S8-08001	2	15.3	0.15	46	6.39	Bi-Polar	$24.43
35PM024L8-00502	2	21.3	0.63	42	5.83	Bi-Polar	$25.45
35PM024L8-01202	2	21.3	0.4	42	5.83	Bi-Polar	$25.45
35PM024L8-07501	2	21.3	0.16	36	5	Bi-Polar	$25.45
35PM048L6-00501	2	21.3	0.63	62	8.61	Bi-Polar	$25.45
35PM048L6-01201	2	21.3	0.4	62	8.61	Bi-Polar	$25.45
35PM048L6-07501	2	21.3	0.16	62	8.61	Bi-Polar	$25.45

42mm Permanent Magnet Stepper Motors

Permanent Magnet Stepper Motor, Small Size, 42mm Diameter, 2 phase

Item	Phase	Length (mm)	Rated Current (A)	Holding Torque (mNm)	Holding Torque (oz-in)	Coil Type	Price (USD)
42PM048S8-00501	2	15.3	0.65	74	10.28	Bi-Polar	$25.66
42PM048S8-01209	2	15.3	0.42	64	8.89	Bi-Polar	$25.66
42PM048S8-08001	2	15.3	0.15	64	8.89	Bi-Polar	$25.66
42PM096S4-00501	2	15.3	0.65	54	7.5	Bi-Polar	$25.66
42PM096S4-01201	2	15.3	0.42	54	7.5	Bi-Polar	$25.66
42PM096S4-08001	2	15.3	0.15	54	7.5	Bi-Polar	$25.66
42PM048L8-00302	2	21.3	0.85	95	13.2	Bi-Polar	$26.98
42PM048L8-00703	2	21.3	0.55	95	13.2	Bi-Polar	$26.98
42PM048L8-06001	2	21.3	0.2	102	14.17	Bi-Polar	$26.98
42PM096L8-00301	2	21.3	0.85	78	10.83	Bi-Polar	$26.98
42PM096L8-00701	2	21.3	0.55	78	10.83	Bi-Polar	$26.98
42PM096L8-06001	2	21.3	0.2	78	10.83	Bi-Polar	$26.98

Actuator of Permanent Magnet Stepper Motors

Actuator of PM motor,Compact on-off actuator, suitable for HVAC applications

Item	Stroke (mm)	Over Stroke (mm)	Maximal Force (N)	Price (USD)	Compare
GM0169L307SC-01	7	3.5	80
GM0169L307SC-02	10	3.5	70