Model No: MD0408

4mm 0408 DC Coreless Motor Permanent Magnet Construction

Nominal voltage: 1.0~3.7 V DC
No-load speed : 24000~99000 rpm/min
Stall torque: 0.029~0.153 mNm
Stall current: 0.063~0.652 A
Diameter: 4.0 mm
Length: 8.0 mm

Typical Application:
Camera Module
Aircraft Rudder
PTZ

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1	Model	MD0408	-007	-016	-010	-003	-011
2	Rated Voltage	V DC	3	3.7	3.7	3.6	3
3	No-Load Speed	RPM	78000	60000	60000	51000	40000
4	No-Load Current	mA	120	60	40	40	20
5	Stall Torque	mNm	0.097	0.084	0.043	0.048	0.034
6	Stall Current	A	0.38	0.195	0.109	0.106	0.063
7	Rated Speed	RPM	43398	35412	31529	27363	23501
8	Rated Current	A	0.204	0.096	0.062	0.06	0.031
9	Rated Torque	mNm	0.043	0.034	0.02	0.022	0.014
10	Rated Output Power	W	0.2	0.13	0.07	0.06	0.03
11	Maximun Efficiency	%	32	36	29	30	36
12	Maximun Output Power	W	0.2	0.13	0.07	0.06	0.04
13	Terminal Resistance	Ω	7.9	19	34	34	47.3
14	Current Constant	A/mNm	3.278	1.983	2.081	1.822	1.611
15	Torque Constant	mNm/A	0.305	0.504	0.481	0.549	0.621
16	Speed Constant	RPM/V	31304	18939	19868	17400	15386
17	Friction Torque	mNm	0.019	0.014	0.01	0.01	0.006
18	Speed/torque gradient	RPM/mNm	810691	713698	1405388	1077985	1172566

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DC Coreless Motor Customization Options：

Motor Housing: Diameter, Length
Motor Shaft: Diameter, Length, Output Direction, Quantity
Bearing Type: Ball Bearings / Sleeve Bearings
Number of Commutator Segments: 3 / 5 / 7 / 9 / 11 / 13
Brush Type: Precious Metal Brushes / Carbon Brushes
Power Connection: Lead Wires / Connector / Terminal Pins / Other
Mounting Type: Shell / Flange / Other
Position Sensor: Hall / Magnetoelectric / Photoelectric
Gear Reducer: Planetary Gearbox

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