How to understand the algorithm of addition, subtraction, multip

1. Gold coins can't be exchanged for experience

2.

bus line: Metro Line 11 → line 5 → No. 398, the whole journey is about 55.6km

1. Walk about 320m from Shenzhen Bao'an International Airport to the airport station

2. Take Metro Line 11, pass 3 stops to Qianhaiwan station

3. Take line 5, pass 21 stops to Buji station

4. Walk about 250m to Shenzhen East Station

5. Take No. 398, After 17 stops, get to the west gate station of South China City

6. Walk about 500 meters to Huasheng outlets shopping center

3. Take line 5 from Shenzhen North subway station to Buji station, transfer to line 3 to Dafen station, take exit A1 to Dafen subway station bus station, take No. 322 or 398 or 977 to South China City West Gate station, get off and walk to Huasheng outlets shopping center

4. Outlets is originally a station, you can take 618 in the export processing zone next to the station to outlets. You can also take 882 (high-class bus, Olympic bus, Chongqing Bus Co., Ltd., Southwest University of political science and Law (old campus) - Olympic Garden (East Gate), the starting price is 2 yuan, the whole journey is 4.5 yuan, tickets are sold) down line and get off at outlets Station.

5.

bus line: Line 3 → M300, the whole journey is about 27.7 km

1. Walk about 860 meters from Shenzhen to Futian station

2. Take line 3, pass 14 stops, and reach Dafen station

3. Walk about 160 meters, and reach Dafen metro station ②

4. Take M300, pass 12 stops, and reach Huanan chengximen station

5. Walk about 250 meters, Arrive at Huasheng outlets, South China City

6. Unknown_Error

7. Equivalent dynamic load:
P = fr
when fa / FR is less than or equal to e
P = XFR + yfa
when fa / FR is greater than e
the coefficients e, X and Y depend on the relationship of f0fa / C0, where F0 is the calculation coefficient (in the proct list provided by the bearing supplier), FA is the axial load and C0 is the rated static load<
f0fa / C0
e
x
y
0.172
0.19
0.56
2.30
0.345
0.22
0.56
1.99
.
.
.
.
.
.
.
.
.
.
.
I'll give you a lot of details.
equivalent static load:
P0 = 0.6fr + 0.5fa
If P0 is less than fr, All the above are deep groove balls.
by the way, which city are you from?

8. 1.
the theory of deep groove ball bearing is not subject to axial force, but it will be subject to slight axial force in the process of practical application, because it has a certain centering effect. After the axial force disappears, it will return to the original position.
the magnitude of the axial force should be related to the actual working environment, and the force of the ball bearing after the axial force is equivalent to the contact angle, It is similar to angular contact ball bearing. The axial force has a lot to do with the clearance and radius of the bearing itself
2.
especially the clearance, the larger the clearance is, the larger the range of the ball's movement in the axial position is, that is, the larger the axial clearance is, the greater the axial force it can bear, but the clearance can not be blindly large
3.
in a word, I can tell you that the axial force is far less than the radial force. As for the specific calculation, because the contact angle can not be predicted, there is no way to know
if the bearing bears the radial load and needs to continue to bear the axial load at the same time, the selection of deep groove ball bearing is unreasonable, because continuous axial force will rece the service life of deep groove ball bearing, Angular contact ball bearing or tapered roller bearing can be selected according to the rotating speed and other instries and mines. Four point contact ball bearing, double row tapered roller bearing or double row angular contact ball bearing can also be selected if axial force is required in both directions.

10. You can check the ship properties, select the prerequisites and know what skills to learn!