Precautions for using CC type double row self-aligning roller bearings

The precautions for using CC type double row self-aligning roller bearings involve multiple aspects, and the following are some key points:

1、 Preparation before installation

Cleaning and drying: Bearings should be thoroughly cleaned and ensured to be completely dry before installation. This helps prevent impurities from entering the interior of the bearing and affecting its performance.

Lubrication: Bearings should be coated with an appropriate amount of grease or oil as needed before installation. Lubricating grease should be selected from products with superior properties such as impurity free, antioxidant, rust proof, and extreme pressure. For bearings with sealed structures, if lubricating grease has already been filled, there is no need to add it again.

2、 Precautions during installation

Tolerance and roundness control: After the bearing is pressed into the bearing chamber, it should rotate flexibly without any obstruction. If there is obvious inflexibility in rotation, it may be due to inappropriate dimensions or tolerances of the shaft, and adjustments should be made. At the same time, it is necessary to control the roundness of the shaft to avoid bearing damage caused by poor roundness.

Special tools and correct methods: Self aligning roller bearings are high-precision products, and special tools should be used during installation to avoid arbitrary tapping or excessive force. When pressing the shaft, it should be ensured that only the small circle is subjected to force; When pressing the large circle, it should be ensured that only the large circle is subjected to force. In addition, when using pneumatic or hydraulic installation, ensure that the upper and lower molds are in a horizontal state to avoid tilting and damaging the bearing groove.

Preventing foreign objects from entering: During installation, special attention should be paid to preventing foreign objects such as iron filings and grease from entering the interior of the bearing. If lubricating grease needs to be applied in the bearing chamber, the amount should be controlled to avoid excessive accumulation.

3、 Usage and maintenance

Regular inspection and lubrication: During use, the lubrication and operating status of the bearings should be checked regularly. If insufficient or deteriorated lubricating grease is found, it should be replenished or replaced in a timely manner. At the same time, attention should be paid to checking the sealing performance of the bearings to prevent external impurities from entering.

Avoid overloading and abnormal vibration: Although CC type double row self-aligning roller bearings can withstand large radial and impact loads, they should also avoid long-term overloading operation or being affected by abnormal vibration. This helps to extend the service life of the bearings.

Temperature control: Bearings generate a certain amount of heat during operation, so it is important to pay attention to controlling the operating temperature of the bearings. If the temperature is found to be too high, the machine should be stopped in time for inspection and corresponding cooling measures should be taken.

4、 Other precautions

Storage and protection: Bearings should be stored in a dry, ventilated, and non corrosive gas environment during the storage process. Avoid prolonged exposure to damp or high temperature environments that may cause rusting or damage to bearings.

Replacement and scrapping: If severe wear, cracks, fractures, or other defects are found in the bearings, they should be replaced with new bearings in a timely manner. Do not continue working with damaged bearings to avoid safety accidents.

In summary, the precautions for using CC type double row self-aligning roller bearings involve multiple aspects such as preparation before installation, precautions during installation, use and maintenance, as well as storage and protection. Only by strictly following these precautions for operation and maintenance can the normal operation of bearings be ensured and their service life be extended.