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Permanent magnet direct drive motor for mill

Ball mill is the key equipment for crushing materials after they have been broken. It is widely used in the fields of ore, coal, cement, electric power, ceramics, glass, chemical fertilizer, metallurgy, electronics, chemical industry, building materials, magnetic materials, etc.

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Mill series permanent magnet motor

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400-6922168

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Permanent magnet direct drive motor for mill

Application field:
Ball mill is the key equipment for crushing materials after they are crushed. It is widely used in minerals, coal, cement, electric power, ceramics, glass, fertilizers, metallurgy, electronics, chemical industry, building materials, magnetic materials and other fields.

Driving status:
At present, the drum speed of a large number of existing ball mills is mostly between 17r/min～32r/min, and the running speed of the small ring gear is mostly between 120r/min～200r/min. Generally, an asynchronous motor is used to drive the transmission mode of the small ring gear through a belt pulley or reducer. There are defects such as low efficiency, large area, large maintenance, large vibration and noise, poor site environment, poor starting ability, and large starting impact.

Direct drive principle:
● The excitation magnetic field of the asynchronous motor is provided by the stator winding, and a distributed winding with q≥2 is required to ensure the sinusoidal nature of the magnetic field. Due to the limitation of the number of slots, it is difficult to make it multi-pole. The excitation magnetic field of the permanent magnet motor is generated by the permanent magnet. The sinusoidal nature of the magnetic field can be ensured by optimizing the shape of the pole arc, and the multi-pole low-speed direct drive can be realized by using the true fractional slot concentrated winding. Select the speed of the small ring gear as the rated speed of the permanent magnet direct drive motor, eliminating the intermediate speed change link to realize the direct drive of the ball mill.
● Motors can be guided for installation

Selection table of permanent magnet direct drive motor for ball mill

Motor model	Rated power kW	Rated voltage V	Rated current A	Rated speed r/min	Rated torque *kNm**	Starting torque multiple	Maximum torque multiple	Efficiency %	Power factor
YTZ400-45-20	45	380	75	192	2.238	1.8	2.2	95.3	0.96
				168	2.558
YTZ400-55-20	55	380	91	192	2.736	1.8	2.2	95.4	0.96
				168	3.126
YTZ400-75-20	75	380	124	192	3.730	1.8	2.2	95.5	0.96
				168	4.263
YTZ400-90-20	90	380	149	192	4.477	1.8	2.2	95.6	0.96
				168	5.117
YTZ500-110-30	110	380	181	192	5.471	1.8	2.2	95.8	0.96
				168	6.253
YTZ500-132-30	132	380	218	192	6.566	1.8	2.2	95.9	0.96
				168	7.054
YTZ500-160-30	160	380	263	192	7.958	1.8	2.2	96.1	0.96
				168	9.095
YTZ500-185-30	185	380	303	192	9.202	1.8	2.2	96.3	0.96
				168	10.516
YTZ630-210--30	210	380	344	192	10.445	1.8	2.2	96.5	0.96
				168	11.948
YTZ630-245--30	245	380	400	192	12.186	1.8	2.2	96.6	0.96
				168	13.927
YTZ630-280--30	280	380	457	192	13.927	1.8	2.2	96.7	0.96
				168	15.917
YTZ630-320--30	320	380	522	192	15.917	1.8	2.2	96.9	0.96
				168	18.191
YTZ630-400--30	400	380/6K/10K	652/42/25	192	19.896	1.8	2.2	97.1	0.96
				168	22.738
YTZ800-500--30	500	380/6K/10K	822/52/32	192	24.870	1.8	2.2	97.2	0.95
				168	28.423
YTZ800-630--30	630	380/6K/10K	1034/66/40	192	31.336	1.8	2.2	97.3	0.95
				168	35.813
YTZ800-800-30	800	380/6K/10K	1326/84/51	192	39.792	1.8	2.2	97.5	0.94
				168	45.477
YTZ1000-1000-30	1000	6K/10K	105/63	192	49.740	1.8	2.2	97.5	0.94
				168	56.845
YTZ1000-1250-30	1250	6K/10K	132/80	192	62.174	1.8	2.2	97.5	0.94
				168	71.057