Motor's Structure

① FLANGE (FRONT)

• The flange and the housing (frame, braket) are a single body type, and this is proceeded with precision. This plays an important part to attach the motor alone or combine the gearhead.

② STATOR

• The roles of the stator are to generate magnetic field, form the rotation, and make the rotor operate.
• This is made up of an iron core, a magnet wire, a lead wire, an insulator.

③ HOUSING(PAINTING)

• The housing forms motor's exterior covering. Its precise process, aesthetic shape, and structure are excellent. This is an important part to support the shaft in order to make the stator be positioned exactly and the rotor rotate well.
• The material is aluminum die casting , iron drawing, or press. Our standard geared motors are made of aluminum die casting.

④ ROTOR

• It is called a rotor and it converts electrical energy received from the stator into mechanical energy and delivers such energy to the outside through its shaft. The rotor consists of an iron core, end ring and aluminum bar.
• The rotor consists of an iron core, end ring and aluminum bar.

⑤ SHAFT

• It plays a role to deliver mechanical output generated from the rotor to the outside, and should have both electrical performance coupled with mechanical strength. Also, cut strong steel is used for the shaft.

⑥ BALL BEARING

• It plays a role in keeping the rotor in a correct position to ensure stablerotation. The induction motor has a narrow air-gap (a gap between a stator and a rotor) so that a great care should be taken to the bearing when using it. Especially, the standard geared motors have a narrower air gap than the general induction motors.
• The ball bearing consists of inner wheels, outer wheels, vibrating bodies, and retainers. In general, the ball bearing has many types, but the small an medium motors mostly use deep groove ball bearings.

NOTE)

The single track deep groove ball bearing type is the most typical type among roller bearings, which purpose of use is very extensive, and the groove on the inner and outer ring raceways has a slightly larger curvature radius than the radius of the rolling element (ball). This bearing can take loads in any direction, including radial direction loads, axial loads and combined loadsand, moreover, it has less friction torque,which is most appropriate for the purpose requiring high speed spinning, low noise, and vibration.
This type of bearing includes an open type bearing, shielded or sealed type bearing with a rubber seal and abearing in the form of a snap ring is attached to the outside diameter of the outer ring.

• It plays a role in providing power to the stator, and UL STYLE NO.3266, and the UL STYLE NO.3271 AWG NO.20 are used, too.

⑦ LEAD WIRE

• It plays a role in providing power to the stator, and UL STYLE NO.3266, and the UL STYLE NO.3271 AWG NO.20 are used, too.

Unit Protection Structure

• Grades of unit protection structure for dustproof(protection against dust), waterproof(water protection) are regulated by IEC529, IEC34-5 standards.
• Display way for dustproof, waterproof by classification are as follows.

• The classification and test methods for Dustproof, Waterproof is as shown in the table below.

Classification for Dustproof (first number)

IP Indication	Type of Protection for Dustproof
	Degree of Protection	Test conditions.
IP0□	None	None
IP1□	Protection from the hand approaching	Not to be penetrated by foreign object of more than diameter 30mm
IP2□	Protection from the fingers approaching	Not to be penetrated by foreign object of more than diameter 12mm
IP3□	Protection from the tip of the tool etc.	Not to be penetrated by foreign object of more than diameter 2.5mm
IP4□	Protection from the WIRE etc.	Not to be penetrated by foreign object of more than diameter 1.0mm
IP5□	Protection fromdust	Dust will not penetrate that prevents normal operation.
IP6□	Complete Dustproof) Structure	Dust will be fully protected from the infiltration

Classification for waterproof (second number)

IP Indication	Type of Protection for Dustproof
	Degree of Protection	Test conditions
IP□0	None	None
IP□1	Protection from vertical droplets	Drop of droplet of 3~5 L/min from height of 200mm for 10 minutes
IP□2	Protection from water droplets falling vertically in the range of 15 °	Drop of droplet of 3~5 L/min from height of 200mm for 10 minutes in range of 15°
IP□3	Protection from water droplets falling vertically in the range of 60 °	Sprinkle water of 10 L/minute at a height of 200mm for 10 minutes in range of 60°
IP□4	Protection from scattering water in all directions	Sprinkle water of 10 L/minute at a distance of 300 ~ 500mm from all directions for 10 minutes
IP□5	Protection from water to pour from all directions	Pour water of 12.5L/min • 30kPa from a distance of 3m in all directions for 3 minutes
IP□6	Protection from water pouring as like strong waves	Pour water of 100L/min•100kPa from a distance of 3m in all directions for 3 minutes
IP□7	In fixed condition, available to use even sunk in water	For 30 minutes under water
IP□8	Can be used under water	By conference with user and manufacturer side

Note) All of our CE MARK MOTOR are structured in accordance with the IEC529, IEC34-5 Protection Provisions of the unit, and the IP grade of each MOTOR is set forth in the NAME PLATE.