Installation and wiring of desicant air dryer (heatless type)

Installation and wiring of desicant air dryer (heatless type)
Compressors equipment maintenance

Compressors equipment maintenance

Each compressor requires well-timed service. Under the service means change the oil, replacement of the oil and air filter, separator, check the belt tension (if it is not the compressor with direct drive), lubrication of the bearings, different type of the valve checking, replacement of the valves if necessary. Also according to the operational manual it is necessary to replace inlet valve repairing kit, minimum pressure valve, thermostat valve and return valve.

Initial Operation & Routine Operation of GRH3 air compressor

Initial Operation & Routine Operation of GRH3 air compressor
How to choose air tank

How to choose air tank

The air reclever tank is an important device in the compressed air system with these following function of: Accumulating gas, stabilizing pressure, Increase idling time, condensating water in the output etc..
Swan air compressor

Swan air compressor

air compressor CS series Horsepower : 15~100 HP Pressure : 8.5~13 kg/cm² output air :1400~10600 l/min

Structure, classification of bearings of air compressors

Wednesday - 02/01/2019 03:47

Structure, classification of bearings (bearings) of air compressors

cau tao vong bi, Bearing 

Bearings consist of outer ring, inner ring, ball roller and retaine. Bearing is made of  chromium carbon and cage is made of hard steel. In order to select a highly approciated bearing, it is necessary to understand the design and characteristics of each of the different types of bearings.


 1.Ball/roller bearing

- Include: outer ring, inner ring, roller and cage.

- Roller has following styles: ball, cyclindrical roller, taper roller, spherical roller, needle roller.

- Classifications:

phan loai vong bi

 +By  Outside diameter :Very very  light, very light, medium, heavy, ...
 +By with : narrow, normal, wide, very wide, ...

Some common rollers :


o lan thong dung

-Bearing house


vo o lan thuong dung


 - Pros and cons of some common bearings

1/ Deep groove ball bearings:
   It is the most common because of various of types: Z   2Z     RS1  2RS1. This type of bearing is under  radial load, axial load and high speed limit

2/ Single row bearing

The gloove of the inner and outer ring are made with contact angle. This bearing is inseparable. The ball number is fitted more than the deep groove ball bearings. This type is under radial, axial force but it canonly bear the axial force in a certain direction. Usually, it is combined 2 kind of bearings, they can bear the axial load caused by the radial load.
3/ Double row bearing.

The structure of this bearing is similar to attaching two round bearings to block the one-angle contact block in a back-to-back connection. These bearings can bear radial loads, moment forces and axial loads on both sides. Cấu trúc vòng bi này tương tự gần như gắn 2 vòng bi tròn đỡ chặn tiếp xúc góc một dãy ghép theo kiểu lưng đối lưng.    Những loại vòng bi này có thể chịu tải hướng tâm, lực moment và tải trọng hướng trục ở cả 2 phía.

4/ Self-aligning ball bearings 
This bearing has two rows of ball connected to the outer ring and sphere. Thanks to this design, bearings can operate in conditions of shaft deflection which is suitable for long shaft.Used in low axial load applications due to the slight support of the shaft of the ball by the groove of outer ring.
5/ Taper roller bearing.
Taper roller bearing structure is one of the simplest structure in all radial bearings. It is used for high speed applications. Because the inner ring, outer ring and shaft are on a straight line, so it can bear a high radial load. N,NJ,NF,NU,RNU NH,NP,NUP,NUH: NN, NNU: It is used for high speed  and accuracy application                                                                                                                                                                                                                           Mr : Phu Nguyen

Related artcles : how to read bearing parameter

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. Bearing structure, Classifications of air compressor bearing,structure and classifications of air compressor bearing

Total notes of this article: 0 in 0 rating

Click on stars to rate this article