Introduction of Motor IP Grade :The Meaning of First Number

Motor IP (INGRESS PROTECTION) grade system is drafted by IEC (INTERNATIONAL ELECTROTECHNICAL COMMISSION ).IP grade is composed of two numbers, the first number represents for anti-invasion grade of external objects and dust, the second the number shows that the sealing degree of anti- invasion of moisture and water, if the number is greater, the degree of protection will be higher.
0: no special protection
1: it can prevent external objects with solid diameter larger than 50 mm entering into the casing.
2: it can prevent external objects with solid diameter larger than12 mm entering into the casing.
3: it can prevent external objects with solid diameter larger than 2.5 mm entering into the casing.
4: it can prevent external objects with solid diameter larger than 1 mm entering into the casing.
5: protection against dust, it can prevent dust from entering to affect the normal operation of the product, and prevent dust contacting the inner casing or parts.
6: sealing against dust, it can completely prevent dust from entering into the casing and prevent the dust contacting the inner casing or parts.

Common Troubleshooting Methods of Vibration Motor

1. after connect the power supply, motor is unable to start, please check:
(1) if power supply is lack of phase;
(2) if motor is loss of phase;
(3) if protective cover is damaged or rub eccentric block.
2. after start-up, there is big motor noise or motor heats, please check:
(1) if the contact surface roughness of vibration machine and motor foundation is in line with the installation requirements;
(2)if the anchor bolts are not tighten up ;
(3) if the vibration acceleration is in line with the requirements;

3. after the adjustment of eccentric block, amplitude changes abnormally please check:
If eccentric block on both ends of the rotor axis is symmetrical;
4. when two vibrating motors of vibration machine vibrate at the same time, if its phase does not conform to the requirements, please adjust the phase sequence of the single unit, don't adjust the total phase sequence of two vibrating motors.

How to Identify Counterfeit and Genuine Bearings of Vibration Motor

Due to the special structure principle of vibration motor, the quality and lifespan of vibration motordirectly affected by bearings, of course will be embodied in the price level of vibration motor. So it is really necessary to choose a good bearing manufacturer, the following methods will help us identify counterfeit bearings:
1. Packaging
Formal original packing of genuine bearing is comparatively normative which includes inner and outer packaging with unified standard and clear writing. However, the counterfeit bearing packaging material is inferior, printing is rough.
2. Color
Specific parts of genuine bearing present a certain color, for example: chamfer is black, if there is any other colors, it may be counterfeit bearings.

 

3. Appearance 
The writing letters of genuine bearing outer packing adopt special carving or spraying technology design, however, the counterfeit bearing printing is blurry.
4. Material 
Material selection of the genuine bearing is standard steel material, however counterfeit bearing adopts cheap ,fake inferior and unqualified material in order to reduce the manufacturing cost, the weight is light.
5. Processing technology
Genuine bearing manufacturing process is fine which can rotate smoothly However counterfeit bearing manufacturing process is poor with coarse surface ,it can not rotate smoothly.

The Risks of Conveyor Belt Running Deviation

The belt running deviation is rather harmful during the operation. According to the actual operation of belt conveyor, the deviation effects on the operation and production of belt conveyors are mainly in the following aspects:
1. Failure breakdown emergency stop device
The failure breakdown emergency stop device with protective purposes is installed on the belt conveyor. When the belt deviation occur and near the failure breakdown emergency stop device, it will causes the device to stop the machine immediately, and hence causes the conveying process to stop. This will affect the efficiency of production line, and hence increase the cost of production. Some serious cases might lead the project unable to finish on time, or even causes the undesirable contract disputes.

2. Reduce the life-span of main components
Firstly, the breakdown of roller, bearings and other mechanical components, such as belt running deviates frompulley will cause the increasing of the force of roller, and hence it will increase the probability of failure. Secondly, it leads the belt to be worn out in a shorter period. The belt running deviation cause the materials spread onto the return belt. It will cause the belt and roller encapsulate to wear and tear abnormally as the materials can’t be fully removed from the return belt. Thus, the life-span of belt and roller will be shorten. Thirdly, it leads the tear and wear from the edge of belt, if the edge of belt collides with frame for a long time during the operation, it will cause the severe wear of belt edge and thus affects the life-span of belt which will leads to the increase of maintenance cost and also the operation cost. When the serious belt deviation occurs, it causes belt tearing directly. Belt deviation might lead to serious overturning of belt, causing the increasing of unilateral force ,hence it will lead to belt transverse fracture. 

Eight Factors will Affect the Quality of Conveyor Roller

Conveyor roller is widely used in various types of industries, however, most customers lack of the knowledge for choosing the suitable conveyor roller. Let’s show you what are the factors that affecting the quality of roller.

 

1. Roller radial runout (the index directly affects the stability of the conveying materials)
2. Flexibility (the index affects the life-span of the roller and belt, as well as the driving power of the machine)
3. Dust resistance performance(the index affects the life-span of roller)
4. Shock resistance performance (the index affects the life-span of roller)
5. Rotational resistance (the index affects the life-span of tape)
6. Axial carrying capacity (the index affects the life-span of roller)
7. Water resistance performance(the index affects the life-span of roller)
8. Axial string momentum (the index affects the life-span of roller directly)