Slewing bearing installation guide points

1. Requirements for mounting brackets: The mounting brackets generally adopt a cylindrical structure, and the cylinder wall is aligned with the center of the raceway. In order to prevent partial overload of the slewing bearing and ensure its flexible operation, the mounting bracket should be subjected to internal stress elimination after all welding procedures, and the mounting plane should be machined. The flatness (including the horizontal deviation of the horizontal plane) should be controlled within a certain range. .

2. Before installing the slewing bearing, the mounting surface of the main machine should be inspected first. The supporting member should have sufficient strength. The connecting surface should be machined and the surface should be smooth without debris and burrs. For the inability to machine to achieve the required flatness, a special plastic with a large injection strength can be used as a filler to ensure the accuracy of the mounting plane and to reduce vibration.

3. The ferrule bearing ferrule has a quenching soft belt zone, which has the mark "S" on the end face of the ferrule. The installation position should be such that the soft belt position is placed in the non-load zone or the non-frequent load zone (the plug hole is always Located at the soft belt).

4. When installing the slewing bearing, firstly perform radial positioning, cross-tighten the mounting bolts, and check the rotation of the bearing. To ensure a smooth bearing rotation, the gears should be inspected for engagement before the mounting bolts are tightened. When tightening the bolts, there should be sufficient pre-tightening force, and the pre-tightening force should be 70% of the yield limit of the bolt material. The mounting bolts should be equipped with a tempering flat washer. Spring washers are strictly prohibited.

5. When the slewing bearing is installed, it should be filled with a proper amount of grease, and the slewing bearing should be filled while filling to make the grease evenly distributed.

6. After the installation is completed, put into operation. After 100 hours of continuous operation, check whether the pre-tightening torque of the mounting bolts meets the requirements. Repeat the above inspection for every 500 hours of continuous operation.
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Slewing bearing use precautions

1. The slewing bearing is coated with a small amount of No. 2 or No. 3 lithium grease in the raceway. When it is activated, the user should refill the new grease according to different working conditions.

2. During the use of the slewing bearing, the grease should be regularly filled. Generally, the ball slewing bearing refuels once every 100 hours, the roller slewing bearing refuels every 50 hours, and the special working environment, such as high temperature and humidity, When there is too much dust, large temperature changes, and continuous operation, the lubrication cycle should be shortened. When filling grease, slowly turn the slewing bearing to make the grease fill evenly.

3. For slewing bearings with internal or external teeth, the debris should be removed frequently and coated with the corresponding grease.

4, according to different working conditions, customers can choose different grease according to specific requirements, to meet the working needs with optimal performance.

5. After the slewing bearing is operated for 100 hours for the first time, the pre-tightening force of the bolt should be checked. After every 500 hours of operation, it must be checked once, and sufficient pre-tightening force must be maintained.

6. In operation, pay attention to the operation of the slewing bearing. If abnormal conditions such as noise, shock, sudden increase in power are found, stop the inspection immediately, eliminate the fault, and dismantle the test if necessary.

7. It is forbidden to directly flush the slewing bearing with water to prevent water from entering the raceway, and to prevent the hard foreign matter from approaching or entering the tooth meshing area.

8. Always check the integrity of the seal. If the seal is damaged, it should be replaced in time. It is found that it should be reset in time.
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