Add color to the Chinese blue sky! Meifeng Jialan and the automotive urea core customers talk about environmental protection!

On November 26, 2018, Meifeng Jialan held the second core customer meeting of vehicle urea , from the core customers of urea in East China and South China, the relevant person in charge of the market in Meifeng Jialan, and nearly 30 people in production units. Join the meeting.

Meifeng Jialan holds the car urea core customer meeting site Meifeng Jialan holds the car urea core customer meeting site

At the customer meeting, Meifeng Jialan has in-depth communication with the customers in the business situation of 2018, the market of vehicle urea and the marketing work measures in 2019, indicating that the product quality will be grasped and the urea for fine vehicles will be built. Expand the market, build industry leading brands; deepen cooperation and achieve win-win sharing.

In order to let customers know more about Meifeng Jialan's urea after-sales service support program, Meifeng Jialan also shared the status quo of domestic vehicle urea use, vehicle SCR system failure and after-sales service solutions, showing “quality first, Service-oriented marketing service concept, professional after-sales service is recognized by the participating customers.

The conference commended 2 “Potential Star” customers, 3 “Stars of Sales” customers, and 4 customer representatives to share their experiences in selling Meifeng products, analyze the current situation of the industry, and plan sales in 2019.

Meifeng Jialan holds the car urea core customer meeting site Meifeng Jialan holds the car urea core customer meeting site

In 2018, Meifeng Jialan sub-region held a core customer meeting for automotive urea, aiming to communicate and communicate with core customers in various regional markets, and do their best to promote market expansion. Before the meeting, the relevant person in charge of Meifeng Jialan also communicated one-on-one with customers in various regional markets. Looking back on the cooperation process in 2018, discussing the development trend of the automotive urea industry and jointly looking forward to the marketing work in 2019.

Reading volume: Source: Mei Fung plus blue AdBlue Author: Cold autumn

Thrust Ball Bearings

 

Thrust ball bearings are separable and their limit rotational speed is low.

Structures:

1.51000 type single-direction thrust ball bearings, this type of bearing can only accommodate axial load on one direction and can control the axial movement on one direction of the shaft and housing.

2.52000 type double-direction thrust ball bearings, this type of bearings can accommodate axial load on double direction and can control the axial movement on double direction of shaft and housing.

3. 560000 type thrust angular-contact Ball Bearing, as this structure can carry axial load and radial simultaneously.

Cage materials

When the outside diameter is equal or lesser than250mm, thrust ball bearings generally adopt pressed steel sheet cages, when the outside diameter is more than250mm,it will adopt solid cages.

Minimum axial load

When the Thrust Ball Bearing is operating, if the applied axial load is too small, the axial direction is not tightly pressed, then acted by centrifugal force, the steel ball will slip and displace and destroy the normal operation of the bearings. To avoid the occurrence of such case, an axial load, Famin must be applied when the thrust ball bearings is working. The calculating formula is:

In the equation, Famin      Minimum axial load  (kN)

                 A       Minimum load constant

                 N       Revolution            (r/min)

Minimum load constant A is showing in the bearings dimension table. If the applied axial load is small, a spring must be used to preload the bearing.

Permissible tilt angle

The double supporting surface of thrust ball bearings should be parallel. The axis center line should be square with shell supporting surface, if this is not assured, it can compensate by adopting spherical housing washer and self-aligning washer. 

Tolerance

The tolerance value of thrust ball bearings is showing in the section [the tolerance of rolling bearing".

Dynamic equivalent axial load

Whenα=90°,thrust ball bearings can only carry axial load and its dynamic equivalent axial load is: Pa=Fa

Whenα≠90,  acted by constant and invariable radial and axial loads, the dynamic equivalent axial load is: Pa=XFr+YFa

See Annex Table 1 for the coefficients of X and Y.

Static equivalent axial load

Whenα=90°, the static equivalent axial load is: P0a=Fa;

Whenα≠90°, the static equivalent axial load is: P0a=2.3Frtanα+Fa.

Where: For double-direction bearings, this equation is applicable to the status when the ration of radial load and axial load is an arbitrary value; for single-direction bearings, when Fr/Fa≤0.44ctgα, the equation is reliable; when, the Fr/Fa＞0.67ctgα, the equation can still give satisfactory P0avalue, but not very conservative.

 

Table 1    Value of X and Y

α1)

Single-direction Bearings2)

Double-direction Bearings

e

X

Y

X

Y

X

Y

45º 3)

50º

55º

60º

65º

70º

75º

80º

85º

0.66

0.73

0.81

0.92

1.06

1.28

1.66

2.43

4.8

1

1.18

1.37

1.6

1.9

2.3

2.9

3.89

5.86

11.75

0.59

0.57

0.56

0.55

0.54

0.53

0.52

0.52

0.51

0.66

0.73

0.81

0.92

1.06

1.28

1.66

2.43

4.8

1

1.25

1.49

1.79

2.17

2.68

3.43

4.67

7.09

14.29

α≠90º

1.25tanα×

(1-sinα)

 

tanα×

(1-sinα)

tanα×

(1-sinα)

1.25tanα×

(1-sinα)

 

1.25tanα

Notes: 1) For α`s medium value, use linear interpolation to calculate the values of X, Y and e.

      2) Fa/ Fr≤e is not applicable to single-direction bearings.

      3) For thrust bearings withα>45°, use interpolation method to calculate the value of whenα=45°.

Thrust Ball Bearing

One Row Thrust Ball Bearing,Two Row Thrust Ball Bearing,Angular Contact Thrust Ball Bearing,Aligning Housing Ring Thrust Ball Bearing

Xibei Bearing Co.,Ltd. , https://www.nxzjck.com