Low Noise Micro Car DC Brushed Coreless Planetary Gear Motor

	ST28P Long Life Low Noise Micro DC Brushed Coreless Customize Planetary Gear Motor
	Dongguan Silent Industry Co., Ltd
DC brush & coreless planetary gearmotor			Φ28mm
ST28P Series/ST28P/Low noise(Helical gear)

The Low Noise Micro Planetary Gear Motor is a specialized mechanical component designed to deliver high performance while minimizing noise. This motor has a unique planetary gearbox design, which provides efficient power transmission while maintaining precise speed control and low noise operation. The compact size of the motor makes it ideal for applications with limited space, such as medical devices, surveillance systems, and robotics. The brushed design of the motor also provides a cost-effective solution, with low maintenance requirements and long service life.

Specifications of DC motor
1	Nominal voltage		12V DC			24V DC
2	No load current		300 mA			61 mA
3	No load speed		7430 RPM			7700 RPM
4	Rated current		3364 mA			1682 mA
5	Rated speed		6597RPM			6831RPM
6	Rated torque		51.38 mNm			49.88mNm
7	Stall current		27630 mA			14424 mA
8	Stall torque		458 mNm			442.1 mNm
9	Max. efficiency		81.0%			84.0%
10	Ambient temperature		’-20°C~+65°C
11	Output bearing		Sleeve bearing
12	Type of brush		Carbon brush
Specifications of gearmotor under 12VDC
Stage	Ratio	Rated current	Rated speed	Rated torque		Max.momentary current	Max.momentary torque	Weight
1	3.7:1	3400 mA	1783 RPM	161.8 mNm		5300 mA	242.7 mNm	254 g
1	4.3:1	3400 mA	1534 RPM	187.2 mNm		5300 mA	280.8 mNm	254 g
1	5.2:1	3400 mA	1731 RPM	226.3 mNm		5300 mA	339.4 mNm	254 g
2	16:1	3400 mA	412 RPM	594 mNm		5300 mA	891  mNm	277 g
2	19:1	3400 mA	347 RPM	705 mNm		5300 mA	1058 mNm	277 g
2	27:1	3400 mA	244 RPM	1000 mNm		5300 mA	1500 mNm	277 g
3	59:1	3400 mA	112 RPM	1862 mNm		5300 mA	2793 mNm	300 g
3	79:1	3400 mA	83 RPM	2493 mNm		5300 mA	3740 mNm	300 g
3	99:1	3400 mA	67 RPM	3124 mNm		5300 mA	4686 mNm	300 g
3	139:1	3400 mA	47 RPM	4386 mNm		5300 mA	6580 mNm	300 g
4	264:1	3150 mA	25 RPM	6000 mNm		4535 mA	9000 mNm	325 g
4	337:1	2520 mA	20 RPM	6000 mNm		3620 mA	9000 mNm	325 g
4	516:1	1750 mA	14 RPM	6000 mNm		2472 mA	9000 mNm	325 g
4	721:1	1350 mA	10 RPM	6000 mNm		2400 mA	9000 mNm	325 g
Specifications of gearmotor under 24VDC
Stage	Ratio	Rated current	Rated speed	Rated torque		Max.momentary current	Max.momentary torque	Weight
1	3.7:1	1700 mA	1844 RPM	157.1 mNm		2580 mA	235.6 mNm	254 g
1	4.3:1	1700 mA	1594 RPM	181.7 mNm		2580 mA	272.6 mNm	254 g
1	5.2:1	1700 mA	1318 RPM	219.7 mNm		2580 mA	329.6 mNm	254 g
2	16:1	1700 mA	427 RPM	279    mNm		2580 mA	418.5 mNm	277 g
2	19:1	1700 mA	360 RPM	684.7 mNm		2580 mA	1027 mNm	277 g
2	27:1	1700 mA	253 RPM	973    mNm		2580 mA	1460 mNm	277 g
3	59:1	1700 mA	116 RPM	1807 mNm		2580 mA	2711 mNm	300 g
3	79:1	1700 mA	86 RPM	2420 mNm		2580 mA	3630 mNm	300 g
3	99:1	1700 mA	69 RPM	3033 mNm		2580 mA	4550 mNm	300 g
3	139:1	1700 mA	49 RPM	4258 mNm		2580 mA	6387 mNm	300 g
4	264:1	1530 mA	26 RPM	6000 mNm		2200 mA	9000 mNm	325 g
4	337:1	1220 mA	21 RPM	6000 mNm		1750 mA	9000 mNm	325 g
4	516:1	820 mA	14RPM	6000 mNm		1200 mA	9000 mNm	325 g
4	721:1	610 mA	10 RPM	6000 mNm		900  mA	9000 mNm	325 g
						Gearbox stages	Length of gearbox X	Length of gearmotor  L
						1	28.7	92.7
						2	35.7	99.7
						3	42.7	106.7
						4	49.7	113.7