Do you know how to disassemble the bearings without a hammer?

2023/03/13 15:44

The correct mounting of spherical roller bearing bearing affects the accuracy, life and performance. Therefore, the design and assembly department for the installation of thrust spherical roller bearings should be fully studied. Hope to be installed in accordance with the operating standards. The items of the operation standard are usually as follows.

(1) Check the size and finishing of the associated parts.

(2) Mounting.

(3) Supply lubricant.

(4) Cleaning of the bearing and the associated parts of the bearing.

(5) Inspection after mounting the bearing.

Hope before the upcoming installation, party to open the spherical roller bearing bearing package. Lubricating oil lubrication, ordinary also do not have to clean, but, instrumentation or high-speed with bearings, etc., to wash with clean oil, remove the anti-rust agent coated on the bearing. General grease lubrication, no cleaning, direct filling grease. Furthermore, bearings that have been sealed with grease are used directly without cleaning. The bearing that has removed the antirust agent is prone to rust, so it cannot be placed in disregard. Installed to the shell, the general clearance fit more, the outer ring has a surplus, usually pressed in with a press, or also have cooling after installation of the cold shrinkage fit method. Use dry ice as coolant, cold shrink fit installation occasions, the moisture in the air will condense on the surface of the thrust spherical roller bearing. Therefore, appropriate anti-rust measures are required.

After continuing to run into the use of late, spherical roller bearing bearing vibration and noise began to increase, and sometimes there is a foreign sound, but the vibration increases more slowly, at this time, bearing crag value began to suddenly reach a certain value. We believe that at this time, the bearing that the performance of the initial failure.

At this time, it is required to closely monitor the spherical roller bearing bearing, pay close attention to its changes. Thereafter, the bearing cliff value and began to decline rapidly, and close to the normal value, and vibration and noise began to increase significantly, its increase began to accelerate, when the vibration exceeds the vibration standard (such as ISO2372 standard), the bearing cliff value also began to increase rapidly, when both more than the vibration standard, and cliff value also exceeds the normal value (available cliff relative standard), we believe that the bearing has entered the late stage of failure production, need Timely repair the equipment and replace the bearings.

The bearing shows late failure characteristics to the appearance of serious failure (generally for bearing damage such as holding shaft, burn, sand frame scattering, raceway, bead wear, etc.) time mostly not more than a week, the larger the capacity of the equipment, the faster the speed, the shorter the interval time. Therefore, in the actual bearing fault diagnosis, once found late fault characteristics, should be decisive judgment thrust spherical roller bearing bearing there is a fault, as soon as possible to arrange maintenance.

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