Q1:How to determine the size of bearing inside and outside diameter?

A:First know the code name of rolling bearing

(Based on new code name)

Bearing model, the size of bearing can be judged intuitively from the model.

Type code, the bearing structure type can be judged intuitively from the bearing (mainly according to the shape of the rolling body classification).

Outer diameter code, from the bearing type can only be judged series, and what series what size. ISO and bearing main producers have standards, countries basically follow ISO standards. For details, refer to the manual.

The situation of width code and outer diameter series code is basically the same, we also need to check the manual.

Inner diameter code:

Bearing basic codes are: three numbers, four numbers, five numbers, with a slash.

One, three numbers: from right to left, a number represents the size of the internal meridian, the number is a few inner diameter is a few mm. For example, the inner diameter of the 608 bearing is 8mm.

Two, four and five numbers: from right to left, the first two numbers are the inner diameter code.

Among them:

00 indicates that the inner diameter of the bearing is 10mm,

01 indicates that the inner diameter of the bearing is 12mm,

02 indicates that the inner diameter of the bearing is 15mm,

03 indicates that the inner diameter of the bearing is 17mm.

The inside dimensions above 04 are equal to the number from right to left, multiplying the first two numbers by five.

For example, the inside diameter of 6201 is 12mm.

The bearing diameter of 6204 is: 20mm.

Three, bearing model has a slash, the number on the right side of the slash is the size of the inner diameter.

For example, the inside diameter of NK20/16 is 16mm.

The inner diameter size of 230/500 bearings is 500mm.

This is the basic method for calculating the inner diameter of metric rolling bearings.

Inch bearings and some individual factory express methods, there are other methods.

Outside diameter code resolution:

Example: 6205

05 is the inner diameter code. Inner diameter size (mm) =05 times 5=25mm

2 indicates the diameter series code. (For bearings with the same inner diameter series code, diameter series code indicates the size of the outer diameter of the bearing). Same inner diameter, outer diameter 4 > 3 > 2 > 0 > 9 > 8 > 7 (some manufacturers have 7 series, some do not)

That is to say, 6405, 6305, 6205, 6005, 6905 (61905), 6805 (61805), 6705, these bearings are deep groove ball bearings with the same inner diameter and successively smaller outer diameter.

Width code:

Bearing type number from right to left, the fourth number, is the width code. Example: 21315 is a “1” series width. 6205 is the “0” series width (actually 6 (0) 205, width “0” omitted.

0 “1” 2 “3” 4 “5” 6 “…… In the case of the same inner diameter, the same outer diameter, the width size becomes wider in turn.

The type code

Count one from left to right or add one and the second number together

“6” means deep groove ball bearing

“4” means double row deep groove ball bearings

“2” or “1” indicates self-aligning ball bearings (there are four numbers in the basic model 0: indicates double-row self-aligning ball bearings

Example: 2205 1204

The standard model should be 02205. The 0 is omitted.

The standard model should be 01204.

“21”, “22”, “23” and “24” denote self-aligning roller bearings.

“N” denotes cylindrical roller bearing (including short cylindrical roller and part of slender needle roller)

“7” means angular contact ball bearing

“3” means tapered roller bearing (metric)

“51”, “52” and “53” indicate centripetal thrust ball bearings (five numbers for basic models)

“81” means thrust short cylindrical roller bearing

Q2:What is the new bearing model 7815E corresponding to?

A:7815E is an old model,

The new model is 30615 for truck hubs

Q3:How to modify the Solidworks bearing model?

A:When you call up the bearings from toolbox, there will be an option for you to select the bearing model in the parameter bar on the left. You can choose directly there. If you have taken out the bearing and saved it, it is not easy to modify the bearing model. It is suggested to take out the bearings you need from Toolbox again.

Q4:What is the type of front and rear bearings in the car generator?

A:Under normal circumstances, the front bearing of automobile generator is 6303, and the rear bearing is 6202.

According to different standards of bearing manufacturers or different materials, the prefix and suffix may be added to the model, but the basic model of bearings is fixed.

At present, the imported bearings are SKF,KOYO,NSK, etc., and the domestic bearings are human-ben, etc.

Q5:What is electric vehicle rear wheel bearing model?

A:6000ZZ, 6001ZZ, 6002ZZ, 6200ZZ, 6202-2RS 6203ZZ 6300-2RS 6302-2RS

These are the general ones.

Q6:How to calculate the inner diameter according to the inch bearing type?

A:In the bearing model, the number behind the bar is the numerator of the bearing inner diameter size, and the constant denominator is 16. In other words, the inner diameter of the UC206-18 bearing is 18/16 (eighteen-sixteenth) inch =1-1/8 (one and eighth) =28.575mm.

Q7:Which model is 6205 deep groove ball bearing matching bearing seatl?

A:1505 SN205 will work

Q8:What is the meaning of the number in the bearing model?

A:Each number in bearings has different meanings. For example, the 6312 you said is a deep groove ball bearing, 6 means deep groove ball series bearings, 3 means the outer diameter is 3 series, and 12 means the inner diameter size: 12×5=60mm.

General bearing a number or letter represents the bearing type, the last two represent the bearing diameter, the middle number represents the diameter series or width series.

Q9:What are the conditions for selecting bearings for automation equipment?

A:1. According to the working conditions of bearings (including load direction and load type, speed, lubrication mode, coaxiality requirements, positioning or non-positioning, installation and maintenance environment, environmental temperature, etc.), select the basic type, tolerance grade and clearance of bearings;

2. According to the working conditions and stress conditions and life requirements of bearings, bearings are determined by calculation. , or according to the requirements of use, select the bearing model, and then check the life;

3. Check the rated load and limit speed of the selected bearing.