Common terms and definitions of the hottest rollin

2022-08-11
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Common terms and definitions of rolling bearings (2)

1 Starting torque

the torque required to start the rotation of one bearing ring or washer relative to another fixed ring or washer

2. Rotating torque when one bearing ring or washer rotates, the torque required to prevent the movement of another ring or washer

3. Radial load

the load acting in the direction perpendicular to the axis of the bearing

4. Axial load

the load acting in the direction parallel to the axis of the bearing

5. Static load

the load acting on the bearing when the relative rotation speed of the bearing ring or washer is zero (centripetal or thrust bearing) or when the rolling element has no movement in the rolling direction (linear bearing)

6. Dynamic load

the load acting on the bearing when the bearing ring or washer rotates relatively (centripetal or thrust bearing) or when the rolling element moves in the rolling direction (linear bearing)

7. Equivalent load

it is generally used to calculate the theoretical load. If a loose term is found, on a specific occasion, the bearing will bear the actual load under the action of the theoretical load

8. Basic static radial (axial) load rating

radial static load corresponding to the total permanent deformation of the rolling element and raceway (central axial static load 4. Basic safety precautions during the use of the fatigue testing machine). If the roller and raceway (roller bearing) are or are assumed to be normal busbar (full line contact) under zero load, under the maximum contact stress, the total permanent deformation at the contact between the rolling element and raceway is 0.0001 times the diameter of the rolling element. For single row angular contact bearings, the radial rated load is the radial component of the load that causes the pure radial displacement of the bearing rings relative to each other

9. Basic dynamic radial (axial) load rating

constant radial load (constant central axial load). Under this load, the rolling bearing can be theoretically anisotropic to withstand the basic rated life of 1 million revolutions. For single row angular contact bearings, the radial rated load is the component of the load that causes the pure radial displacement of the bearing rings relative to each other

10. Life (refers to a set of bearings) life

the number of revolutions of a ring or a washer relative to another ring or a washer before the fatigue expansion of the material of a bearing ring or a rolling element for the first time. The service life can also be expressed by the number of operating hours at a given constant speed

11. Reliability

the percentage of bearings that are expected to reach or exceed a specified life of a group of nearly identical rolling bearings operating under the same conditions. The reliability of a set of bearings is the probability that the bearings reach or exceed the specified life

12. Rated life

the predicted value of life based on radial basic rated dynamic load or axial basic rated dynamic load

13. The purchase volume and price of scrap steel by the basic rated life steel plant is still at a low level, which is the rated life associated with 90% reliability

14. Life factor life factor

in order to obtain the basic rated radial dynamic load or the basic rated axial dynamic load corresponding to the given rated life, it is applicable to the correction factor of equivalent dynamic load

15. Bearing with seat plummer block

centripetal bearing is a component combined with seat. There is a base plate for installing screws on the support surface parallel to the axis line of the bearing

16. Plummer block housing for vertical seat

install the seat for rolling bearing

17. Flange housing

a seat with radial flanges and screw holes for installation on the bearing surface perpendicular to the axis of the bearing

18. Adapter sleeve

a sleeve with an axial opening with a cylindrical inner hole, the outer surface of which is conical and the small end has an external thread. It is used to install the bearing with taper hole (with lock nut and lock washer) on the shaft with cylindrical outer surface

19. Withdrawal sleeve withdelawal sleeve

a sleeve with an axial opening of a cylindrical inner hole, whose outer surface is conical and the large end has external threads. It is used to install or disassemble the bearing with taper hole on the shaft with cylindrical outer surface (with nut)

20. Lock nut lock

for a nut with cylindrical outer surface and axial groove, use an outer claw of the lock washer and an annular wrench to lock the nut. Used for axial positioning of rolling bearings

21. Lock washer lockwasher

thin steel plate washer with many external claws. An outer claw is used to lock the nut, and an inner claw is inserted into the axial groove of the tightening sleeve or shaft

22. One end of the eccentric locking collar has a groove steel ring eccentric to the inner hole, which is installed on the equally eccentric extension end of the inner ring of the outer spherical bearing. Rotate the eccentric sleeve relative to the inner ring to fix the inner ring, and then tighten the jackscrew to fix it on the shaft

23. Concentric locking collar

the steel ring installed on the wide inner ring of the outer spherical bearing, with a jackscrew screwed into the hole on the inner ring and in contact with the shaft

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