Ms Preminum Quality 220V 380V 0.5 HP 0, 37 Kw 3 Phase Motor

• Application: Industrial
• Speed: Constant Speed
• Number of Stator: Three-Phase
• Function: Driving
• Casing Protection: Protection Type
• Number of Poles: 4
• Model NO.: MS712-4 0.5HP
• Starting Mode: y-δ Starting
• Certification: ISO9001, CCC, CE
• Brand: Liyuan
• Housing: Aluminum
• Cover: Aluminum
• Terminal Box: PPO
• Fan: PP
• Fan Cover: A3
• Shaft: C45
• Transport Package: Carton or Plywood
• Trademark: LIYUAN
• Origin: Fuan
• HS Code: 8501520000
• Production Capacity: 50000 Pieces/Year

Product Description

Ms Preminum Quality 220V 380V 0.5 HP 0, 37 Kw 3 Phase Motor

Recommendation

 

Product Description

 

Model	kw	HP	Current	Speed	Eff	Power Factor	Tst/Tn	Ist/In	Tmax/Tn
MS-712-4	0.37	0.5	1.15A	1370 rpm	66%	0.74	2.2	6	2.4

Company Profile

 

FAQ

1. Why do large motors use insulated bearing sleeves?
        Compared with small motors, the bearing system of large motors is more complex. It is not meaningful to talk about motor bearings alone. To talk about motor bearings, we should start from the shaft, bearing sleeve, end cover, bearing inner and outer cover related to the bearing, etc. When it comes to components, the coordination with related components is only a mechanical coordination relationship. Ms. Shen believes that external factors such as the operating conditions of the motor should also be considered comprehensively.
   
          In the actual operation and use of the motor, the most common problem is the noise of the bearing. This kind of problem may be related to the quality of the bearing itself on the one hand, and the selection of the bearing on the other hand. Most of the problems It is the bearing problem derived from some inappropriate and unreasonable production process.
   
          We know that noise comes from vibration. To solve the problem of bearing noise, the first thing to solve is vibration. Compared with small motors and ordinary motors, large-sized motors, high-voltage motors and variable-frequency speed-regulating motors also face a problem of shaft current. In order to solve this problem, on the one hand, insulating bearings can be used, but the purchase cost of such bearings is relatively high. High, and some insulated bearings are not yet popular; on the other hand, grounding carbon brushes are used, but this is more troublesome to maintain. In view of this situation, many motor manufacturers have tried to find a way on the bearing sleeve and invented the insulating bearing sleeve, but this kind of insulating bearing sleeve is more complicated to process. The basic principle is to divide the bearing sleeve into two parts, and the bearing The chamber is isolated by means of insulation, which completely cuts off the circuit of the shaft current caused by the shaft voltage, which is a once and for all measure. The figure below is a partial view of an insulated bearing housing.
   
          This insulating bearing sleeve can be divided into an inner sleeve and an outer sleeve, the inner sleeve and the outer sleeve are filled with insulation, and the thickness of the insulating filling layer is 2-4mm. The insulating bearing sleeve separates the inner sleeve and the outer sleeve through an insulating filling layer, and plays the role of blocking the shaft current, thereby protecting the bearing and prolonging the service life of the bearing.
   
          Some motor manufacturers also use insulating plates to achieve this effect, but the insulating performance of the insulating plates will be reduced when they are damp, and there may be gas between the other two cylinders due to the uneven thickness of the insulating plates or the roundness of the cylinders does not meet the requirements. clearance, which may affect the performance of the bearing housing to a certain extent, it is recommended to take necessary remedial measures.