37mm dc gear motor: 1.Rated Voltage:3-24V 2.Speed:3-1500RPM 3.Allowable Torque:10kg.cm 4.eccentric shaft motor MODEL:GM37-3530 1.Low noise,low current and no spark 2.Motor with encoder,12 pulse signal

3.size:37mm diamter gearbox,5.5mm D eccentric shaft,

4.reduction ratio and gearbox length:

1/6.25,1/10 L=19

1/18.8,1/30 L=22

1/43.8,1/56.3,90 L=24

1/131.3,1/168.8,1/270 L=26.5

1/393.8,1/506.3,1/810,1/976 L=29

5.37mm gearbox can also match with dc motor 520 & 528 & 3530 & 3527,and bldc motor TEC3650 & 3640

6. samples can be provided for your test first;

MODEL		VOLTAGE		NO LOAD		AT LOAD					STALL
		OPERATING RANGE	NOMINAL	SPEED	CURRENT	SPEED	CURRENT	TORQUE		OUTPUT	TORQUE		CURRENT
			V	rpm	A	rpm	A	N.m	Kg.cm	w	N.m	Kg.cm	A
GM37-3530	0650-10	3-9	6.0	490	0.12	430	0.22	0.02	0.24	0.65	0.1	1.2	1.9
	0650-30	3-9	6.0	160	0.12	147	0.22	0.06	0.63	0.65	0.3	3.2	1.9
	0650-90	3-9	6.0	55	0.12	47	0.22	0.16	1.6	0.65	0.8	8.0	1.9
	0650-169	3-9	6.0	29	0.12	25	0.22	0.28	2.8	0.65	1.4	13.9	1.9
	0650-270	3-9	6.0	18	0.12	16	0.22	0.45	4.5	0.65	3.0	30	1.9
	0650-506	3-9	6.0	9.5	0.14	8	0.22	0.59	5.9	0.65	3.0	30	1.9
	0650-810	3-9	6.0	6	0.14	5	0.22	0.75	7.5	0.65	3.0	30	1.9
	12100-10	6-15	12.0	970	0.25	930	0.4	0.02	0.24	2.9	0.24	2.4	5.5
	12100-30	6-15	12.0	330	0.25	310	04	0.06	0.63	2.9	0.63	6.3	5.5
	12100-90	6-15	12.0	110	0.25	103	0.4	0.16	1.6	2.9	1.6	16	5.5
	12100-169	6-15	12.0	59	0.25	55	0.4	0.28	2.8	2.9	2.9	29	5.5
	12100-270	6-15	12.0	37	0.25	35	0.4	0.45	4.5	2.9	3.0	30	5.5
	12100-506	6-15	12.0	20	0.25	18	0.4	0.59	5.9	2.9	3.0	30	5.5
	12100-810	6-15	12.0	12	0.25	11	0.4	0.75	7.5	2.9	3.0	30	5.5

   

window curtain use 12v dc gear motor 37gb