Model of Motor		Output	Voltage	Frequency	Poles	Duty	Rated				Starting Torque		Capacitor/Ve
Model of Motor		Output	Voltage	Frequency	Poles	Duty	Speed	Current	Torque		Starting Torque		Capacitor/Ve
Motor	Motor with gear shaft	W	V	Hz	P	Duty	r/min	A	N.m	kgf.cm	N.m	kgf.cm	μ f/VAC
90YY90AF	90YY90AF-GU	90	1ph110	50	4	CONT	1350	1.40	0.64	6.40	0.50	5.00	20.0/250
90YY90CF	90YY90CF-GU	90	1ph220	50	4	CONT	1350	0.70	0.64	6.40	0.48	4.80	5.0/450
90YY90SF	90YY90SF-GU	90	3ph220	50	4	CONT	1300	0.66	0.66	6.60	2.40	24.0	/
90YY90S3F	90YY90S3F-GU	90	3ph380	50	4	CONT	1300	0.38	0.66	6.60	2.40	24.0	/
90YY90DF	90YY90DF-GU	90	1ph220	50	2	CONT	2800	0.79	0.30	3.00	0.34	3.40	6.0/450

The capacitor capacitance will be different under different voltage.
Wrong capacitor capacitance is the cause of trouble.
You must confirm a correct voltage and select a correct model when your purchase order is placed.
Gear Box Data:

Frequency	Reduction Ratio		3	3.6	5	6	7.5	9	10	12.5	15	18	20	25
50HZ	Output Shaft Speed	r/min	500	417	300	250	200	166	150	120	100	83	75	60
	Allowable Torque	N.m	1.55	1.86	2.58	3.10	3.87	4.64	4.65	5.81	6.98	8.37	8.40	10.5
	Allowable Torque	kgf.cm	15.8	19.0	29.2	31.6	39.6	47.2	47.4	59.3	71.2	85.4	85.7	107
60HZ	Output Shaft Speed	r/min	600	500	360	300	240	200	180	144	120	100	90	72
	Allowable Torque	N.m	1.35	1.62	2.25	2.70	3.37	4.04	4.05	5.06	60.7	7.29	7.32	9.15
	Allowable Torque	kgf.cm	13.8	16.5	23.0	27.6	34.4	41.2	41.3	51.6	61.9	74.4	74.7	93.4

Frequency	Reduction Ratio		30	36	40	50	60	75	90	100	120	150	180	200
50HZ	Output Shaft Speed	r/min	50	41	37	30	25	20	16	15	12	10	8	7.5
	Allowable Torque	N.m	12.6	15.1	16.8	19.6	19.6	19.6	19.6	19.6	19.6	19.6	19.6	19.6
	Allowable Torque	kgf.cm	129	154	171	200	200	200	200	200	200	200	200	200
60HZ	Output Shaft Speed	r/min	60	50	45	36	30	24	20	18	15	12	10	9
	Allowable Torque	N.m	11.0	13.2	14.6	18.3	19.6	19.6	19.6	19.6	19.6	19.6	19.6	19.6
	Allowable Torque	kgf.cm	112	135	149	187	200	200	200	200	200	200	200	200

Motor Dimensions:

Gear Box Dimensions:

you may need

40W YY Induction Gear Motor (40W YN Reversible Gear Motor)

60W(12mm shaft) YY Induction Gear Motor (60W YN Reversible Gear Motor)

140W YY Induction Gear Motor (140W YN Reversible Gear Motor)

120W YY Induction Gear Motor (120W YN Reversible Gear Motor)