What Are Our Concerns About Bearings（2）

Q21:Deep groove bearings with inner holes of 60 have those  

Model Size (length, width and height)  

61812 60x78x10  

61912 60x85x13  

16012 60x95x11  

6012 60x95x78  

6212 60x110x22  

6312 60x130x31  

6412 60x150x35  

Q22:Do you have thrust bearings with inner diameter 4 and outer diameter 8?  

SKF has models BA3: D= 3, D=8;  BA4: D= 4, D=10;  According to the national

standard GB/T 273.2, the minimum d=4, D=12;  It can be said that D= 4 and D=8 belong to the series of abnormal sizes. It is recommended to choose similar standard sizes, otherwise they must be designed and developed, which will bring high

costs.

Q23:SKF bearing 6220/C3 set sleeve type?  

The 6220/C3 does not need to be fixed on the sleeve.  

Because his inner hole is straight.  Tighten sleeves should only be used if the inner hole is tapered.  

(Taper means one side is empty.  One side is empty.)  

Using a locking sleeve can make his inner hole smaller.  More easily through the shaft..  

If you are sure to use it.  Then I’m sure your number didn’t run out  

Q24:Who knows SKF bearing price inquiry system. 

Basically nothing!  Even if you do, you need a membership!  Ask for username and password!  Pay for it!  There is no free lunch!  

Even if there are – free – public – online!  Would you believe it?  

This stuff is a trade secret!  Ha ha  

Or the reference price!  

It is ok to have check model!  

Q25:Inquire bearing code  

23024C/W33 and 23024CA/W33 should be SKF bearing models. In 23024, 2 is   self-aligning roller bearing, 3 represents width, 0 is diameter code, 24 is inner     diameter 120MM, C and CA are copper alloy cages, and /W33 represents service   temperature limit below 200 degrees.  

Q26:NSK7216BEAT7DFCA20UC4,B shall be 40 degree Angle contact bearings,EA steel cage,DF shall be face to face in pairs..  

7216BEAT7DFCA20UC4  

Bearing type, inner diameter is 80mm.  

B: Contact Angle =40 degrees  

EA: High performance  

T7: Cage material (here should be three digits, such as T85, T62, etc.)  

DF: Face to face in pairs  

CA20: Special Axial Clearance (CA= Special Axial Clearance, CA20: +20μm)  

UC4: I have never seen this code name before. It usually shows “P4” here.  

I have their samples.  

Q27:5202ZZC3 bearing how can not check the national standard.  What is it?  

Angular contact ball bearing ZZ represents double-sided iron seal, C3 represents large clearance.  The new domestic model is 3202-2Z with an inner diameter of 15 and an outer diameter of 35 and a width of 15.9  

Q28:FAG bearing authenticity identification method  

The FAG bearing authenticity identification method can be divided into several parts:

1.FAG bearing outer packing and bearing steel seal  

Under normal circumstances, the outer packaging design of imported genuine bearings is very clear.  The same is true of FAG bearings.  And the genuine FAG bearing on the steel seal is quite clear.  FAG bearings will be printed with brand words and labels on the bearing body.  The font is very small, is not overheated before pressing the word, so although the font is small, but concave deep, very clear.  The font of counterfeit products is not only fuzzy, because the printing technology is rough, the font floats on the surface.  

2. Rotating sound of FAG bearing  

The left hand holds the bearing inner sleeve, and the right hand rotates the jacket to listen for noises.  Because the production conditions of most counterfeit products are backward, the manual workshop operation is complete, and the pure production environment cannot be guaranteed in the production process.  There are often impurities in the shoddy bearing, so it will make noises when rotating.  This is the biggest difference from the factory brands that strictly follow production standards and are operated by machines.  

3.FAG bearing anti-rust oil  

Because the current anti-rust technology in China is not very perfect, it is easy to leave thick oil stains when the FAG bearing body is anticorrosive. It is sticky and thick in the hand, and the oil stains on the surface are very cloudy.  This should be paid special attention to when buying imported bearings.  And the traces of anti-rust oil can hardly be seen on the original FOREIGN FAG bearings, and the imported bearings smell of a taste, is already treated with anti-rust oil, but you can’t see it.  

4. Chamfering of FAG bearings  

The chamfering of FAG bearings, that is, the intersection of horizontal and vertical surfaces, imitation bearings due to the limitations of production technology, the processing of these corners and corners is not very fine.  

Q29:NK series SKF bearing inner diameter 22 outer diameter 35 width 16  

According to your size, it should be SKF needle roller bearing without inner ring and without flange model: RNAO 22X35X16 is not NK series, if it is NK series needle roller bearing, then you reported the wrong diameter, it should be 32, for reference only.  

Q30:What is the difference between imported SKF bearing model 22324CC/W33 and 23224CC/C4W33?  What’s the difference?  Thank you very much!  

Cc is the structure cc/ C4 is based on the original CC structure C4 clearance standard W33 has three filling gaps