Instructions for using MB split copper insulated self-aligning roller bearings

The usage method of MB split copper insulated self-aligning roller bearings mainly includes installation, usage precautions, and maintenance. The following will elaborate in detail:

1、 Installation method

Thermal expansion method installation:

Heating oil pool: Place the bearing in an oil pool filled with high ignition point oil for heating, and the temperature is usually controlled between 93 ℃ and 121 ℃, not exceeding 121 ℃. The bearing stays in the oil for 20 or 30 minutes, allowing it to fully expand and easily fit onto the shaft. When heating, the bearing should not come into direct contact with the heat source. A mesh plate should be placed 5cm away from the bottom, and a small support block should be used to separate the bearing from the mesh plate.

Induction heating: Especially suitable for the installation of small bearings on assembly production lines. The heating speed is fast, but the temperature also needs to be controlled within 93 ℃. The bearing temperature can be measured using thermoelectric crayons and other methods.

Installation and fixation: After the bearing is heated, it is vertically placed on the shaft shoulder and fixed with locking washers, locking nuts, or clamps. After the bearing cools down, the locking nut or clamp plate should be tightened.

Heart rod pressure method installation:

Applicable scenarios: For small-sized bearings, a core rod press and mounting tube can be used to press the bearing onto the shaft or into the seat hole.

Installation steps: Apply light engine oil on the shaft to reduce the force required for press fit, carefully place the bearing on the shaft to ensure it is perpendicular to the main shaft axis. Use a heart rod press to press the bearing into place.

Clearance adjustment:

Measure the starting radial clearance: Use a thin feeler gauge to measure the starting radial clearance of the bearing.

Installation and adjustment: Apply thin engine oil on the spindle cone and slide the bearing onto the spindle. After locking the nut, the inner ring expands to achieve an interference fit. Regularly measure the radial clearance until the appropriate reduction is achieved (not exceeding the recommended reduction).

2、 Precautions for use

Tolerance and fit: After the bearing is pressed into the bearing chamber, it should rotate flexibly without any obstruction. If there is obvious rotational inflexibility, it may be due to excessive shaft size or improper tolerance control. It should be ensured that the tolerance and roundness of the shaft are controlled within a reasonable range.

Assembly method: Bearings are high-precision products, and special molds should be used during assembly to avoid random tapping. When pressing the shaft, only a small circle can be subjected to force, and when pressing a large circle, only a large circle can be subjected to force.

Preventing foreign objects during assembly: During assembly, bearings should avoid foreign objects entering the interior, such as iron filings, grease, etc. Cleaning treatment should be carried out before assembly to ensure the cleanliness of the bearings and bearing chambers.

3、 Maintenance and upkeep

Lubrication and Cleaning: Bearings should be regularly lubricated during use to reduce friction and wear. At the same time, the surface and interior of the bearing should be regularly cleaned to remove oil stains and impurities.

Inspection and replacement: Regularly check the wear, clearance changes, and defects such as cracks and fractures of the bearings. If any abnormalities are found, new bearings should be replaced in a timely manner.

Storage and preservation: Bearings should be stored and preserved to avoid adverse effects such as moisture, corrosion, and high temperatures. It should be stored in a dry, ventilated, and non corrosive gas environment.

In summary, the use of MB split copper insulated self-aligning roller bearings includes correct installation methods, precautions, and maintenance. During use, the operating procedures should be strictly followed to ensure the normal operation of the bearings and extend their service life.