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Ntn Roller Bearing Fails In Use And Precautions For Daily Maintenance

Ntn Roller Bearing

After the installation of NTN bearing, in order to check whether the installation is correct, operation inspection shall be carried out. Ntn Roller Bearing Small machinery can be rotated by hand to confirm whether it rotates smoothly.

The inspection items include poor operation caused by foreign matters, scars and indentation, unstable torque caused by poor installation and poor processing of mounting base, excessive torque caused by too small clearance, installation error and sealing friction, dll.. If there is no abnormality, the power operation can be started.

Large machinery cannot rotate manually, so the power shall be cut off immediately after no-load start, and the machinery idles. Check Ntn Roller Bearing whether there is vibration, kebisingan, contact of rotating parts, dll.. after confirming that there is no abnormality, enter the power operation.

Power operation, starting from no-load and low speed, slowly increase to the rated operation under the specified conditions. During the test run, the inspection items are Ntn Roller Bearing whether there is abnormal sound, the temperature change of roller bearing, the leakage or discoloration of lubricant, dll..

If any abnormality is found, stop the operation immediately, check the Ntn Roller Bearing machinery, and remove the bearing for inspection if necessary.

The temperature can generally be inferred from the external temperature of the bearing seat. But it is more accurate to measure the temperature of NTN bearing outer ring directly by oil hole.

The bearing temperature rises gradually from the beginning of Ntn Roller Bearing operation, and the temperature is usually stable after 1 ~ 2 hours. If the roller bearing is not installed properly, the temperature will rise sharply, resulting in abnormal high temperature.

The reasons are too much lubricant, too small bearing clearance, poor installation, excessive friction of sealing device, dll.. In the case of high-speed rotation, the wrong Ntn Roller Bearing selection of structure and lubrication mode is also the reason.

Ntn Roller Bearing Fails In Use And Precautions For Daily Maintenance

1) Wash the bearing with kerosene,

press it into the bearing seat, fill the roller of the bearing outer ring with shell No. 3 lithium grease to two-thirds full, apply it evenly with clean hands, install the NTN bearing Ntn Roller Bearing gland, and press the bearing gland with the fastening bolt coated with bolt locking glue;

2) The bearing is a cylindrical roller bearing with separable inner and Ntn Roller Bearing outer sleeves. The bearing shall be sleeved on the rotating shaft and in place;

3) Install the bearing seat on the casing. If there is a grease filling hole, it must be aligned with the position. Tighten the bearing seat with the fastening bolt coated with bolt locking glue;

4) The inner and outer eccentric blocks are installed on the rotating shaft and in place. If there is a shaft key, install the shaft key into the keyway, then install the outer eccentric block, and install the shaft on the rotating shaft with a retaining ring;

5) Tighten the fastening bolts of the fixed eccentric block, rotate the Ntn Roller Bearing adjustable eccentric block to reach the angular position before removal, and tighten the fastening bolts. After the above assembly, the rotating shaft shall have certain axial series movement;

6) Install the protective covers at both ends of the vibration motor and fasten them with screws.

The effect of imported bearings on the installation form and other aspects of vibration motor has changed to a certain extent, and the form considered from different angles has also changed to a certain extent. Slowly, we have a certain understanding of the installation situation in all aspects.

Use factors mainly refer to whether the installation, adjustment, penggunaan dan pemeliharaan, maintenance and repair meet the technical requirements. The installation condition is one of the primary factors in the use factors.

The improper installation of NTN bearing often leads to the change of the stress state between the parts of the whole set of roller bearing, and the bearing operates in an abnormal state and fails early. Check NTN and adjust the vibration and load of the bearing according to the technical requirements during installation and maintenance,

and immediately find out the cause of the abnormal vibration and load of the bearing, and restore it to normal operation according to the technical requirements. Sebagai tambahan, it is also important to analyze and test the quality of grease and the surrounding medium and atmosphere.

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