Technology

Guide of air filter maintenance

Compressed air system in factory plays an important role. In order to ensure the stable operation during the manufacturing process, the regulary maintenance is nescessary . However, there are many different problems in fact such as: Air compressors, dusty air dryers, high engine room temperatures, unsecured wind convection ... lead to reduce using time of compressor accessories (air filter, oil filter, oil separator ...). On the other hand, the recommended maintenance in some factories is not seriously followed and there are deviations. To extend the life of the machine as well as compressor components and ensure operator safety Air compressors are very important to maintain regularly and technically correct.Air compressors, dusty air dryers, high engine room temperatures, unsecured wind convection ... lead to reduced use time of compressor accessories (air filter, loc oil, oil separator ...). On the other hand, the maintenance (maintenance) recommended by the manufacturer in some factories is not guaranteed and there are deviated. To lengthen longevity of mạchine as well as compressor components and ensure operator safety , air compressors are very important to maintain regularly and technically .

Installation and wiring of desicant air dryer (heatless type)

Installation and wiring of desicant air dryer (heatless type)

Safety when using GRH3 air compressor

Air compressor operation requires competence and experiences. The users may get some serious injuries in some cases. For the safety purpose, read the cautions and warning specified in the manual carefully and fully understand them for proper use.

Swan srew air compresor CS-AD series

Swan screw series CS-AD series air compressors are designed with direct drive , high-performance operation, large air volume, solid mechanical structure design, durability. The control system automatically diagnoses the trouble of achieving perfection and the highest reliability.
Piston maintenance and repair

Piston maintenance and repair

Piston compressors are widely used in industry (manufacturing factory), with high mobility, simplicity , easy repair, cheap price which are suitable for many objects. Therefore, Piston compressors are widely used in daily life such as: motorbike inflation, car drying , pumping car tires...

How to read bearing parameters

Wednesday - 02/01/2019 04:02

When using the bearing, we see the parrameter. The information on the bearing is a range of letters and number which shows information of; type of bearing, dimensions, accuracy, and other parameters  etc. So, How to understand the parameters correctly, this articale may be useful: 

vong bi 2,bearing parameters
Bearing

1.According to  TCVN 3776-83 the bearing parameter will be understood as following: 

- Ball bearing is abbriviated by numbers. Two last numbers show the inner diameter from 20 to 495 mm, these number is as 1/5  as the real dimensions. The number has inner diameter from 10 to 20 mm signed 00 (10mm), 01 (12mm), 02 (15mm), 03 (15mm), 03 (17mm).
For example: The number 150212 on the bearing mean: 1 range bearing  (0), outer ring (5), light load (2), width (1), inner diameter 60 mm (12×5).
- Other examples:
thong so vong bi,bearing parameters
bearing parameters

 

vong bi skf 7, bearing parameters
bearing parameters

2. Meaning of load :

- The third number from right to left. 

1 or 7

Very light load 

2

 Light load only

3

Medium load only 

4

Heavy load only

5

Very heavy load only

6

Medium load same as 3 but it's thicker 

8-9

Really load only; 814, 820, 914

 3. Meaning of classification:

 The 4th number from right to left indecates the bearing 0-9.    

0

The 1 layer ball bearing 

1

The 2 layer ball bearing 

2

1 layer short cylindrical roller  bearing 

3

2 layer short cylindrical roller  bearing 

4

1 layer long cylindrical rollerbearing 

5

Twisted cylindrical bearing 

6

Thrust ball bearing 

7

Tapered roller bearing 

8

Not radial thrust ball bearing

9

Cylindrical roller thrust bearings

4. Structural meaning :

 The number from right to left.  

3

1 row  cylindrical roller thrust bearing, burrless inner thrust ring without 

4

The same as 3  with barrier ring

5

1 groove baking in the outter ring 

6

1 basket stoping oil made of steel sheet

9

 1 row short thrust  cylindrical roller bearing, there is a ring thrusting the ballroller. 

 
For example:
  Read the 60304 bearing paramaters.
-          ID 04x5 = 20mm
-          Load: Medium

-          1 layer ball bearing 
-          1 basket stoping oil made of steel sheet
Note : If there is 3 last number , the last number is ID (D<20mm).
        Ex : 678 , d=8mm, light load, thrust ball bearing 

5. Bearing gap:

Centre shaft dimension 

New spherical ball bearing 

New clindrical ball bearing 

Usable ball bearing 

20-30

0.01-0.02

0.03-0.05

0.1

30-50

0.01-0.02

0.05-0.07

0.2

55-80

0.01-0.02

0.06-0.08

0.2

85-120

0.02-0.03

0.08-0.1

0.3

130-150

0.02-0.03

0.10-0.12

0.3

6. Silver gap  :

Diameter of center shaft

Gap between shaft and silver bearing 

     
       

>1000 v/p

 

Standard

Allowance 

Standard

Allowance 

18-30

0.040-0.093

0.1

0.06-0.118

0.12

30-50

0.05-0.112

0.12

0.075-0.142

0.15

50-80

0.065-0.135

0.14

0.095-0.175

0.18

80-120

0.08-0.16

0.16

0.12-0.210

0.22

120-180

0.100-0.195

0.20

0.150-0.250

0.30

180-260

0.120-0.225

0.24

0.180-0.295

0.40

260-360

0.140-0.250

0.26

0.210-0.340

0.5

360-500

0.170-0.305

0.32

0.250-0.400

0.6

                                                                                                                                  Source: Internet


Minh Phu provides maintenance and repair services for air compressors, in addition Minh Phu also provides spare parts for air compressors with high quality at reasonable prices. For further information, please contact (+84)919 23 28 26. Sincerely thank you for your interest and your trust of our service. How to read bearing parametersi, air compressor bearings , bearing paremeters, bearing replecement of air compressor

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