4218315 EX70 SWING BEARING SEAL

Product Description

GET TATA-HITACHI EX70 SWING BEARING SEAL 4218315

HIGH-QUALITY SWING BEARING SEALS FOR EXCAVATORS

APPLICABLE IN VOLVO EXCAVATOR:-

• EX60
• EX70

4218315 EX70 SWING BEARING SEAL

The swing bearing seal of an excavator is a critical component designed to prevent contamination and leakage around the swing bearing, which allows the upper structure of the excavator (the cab, boom, and attachment) to rotate relative to the undercarriage. Proper functioning of the swing bearing seal is essential for the longevity and smooth operation of the swing system.

Purpose of the Swing Bearing Seal

Containment of Lubricants: The seal helps retain lubricants (usually grease or oil) within the swing bearing assembly. Proper lubrication is crucial for reducing friction and wear between the moving parts of the swing bearing.

Prevention of Contamination: It prevents dirt, debris, water, and other contaminants from entering the swing bearing assembly, which can cause premature wear and damage.

Leak Prevention: It helps prevent the leakage of lubricants from the bearing, which could lead to insufficient lubrication and potential failure of the bearing.

Components of the Swing Bearing Seal

1. Rubber Seal*: These are commonly used to create a tight seal between the swing bearing and the housing. They are flexible and can accommodate some movement while still providing an effective barrier.

2. Metallic Components: Some seals incorporate metal parts, such as retaining rings or back-up rings, to provide additional strength and support to the rubber seals.

3. Dust Covers: Often integrated into the seal assembly to protect the rubber seals from abrasive particles and contaminants.

Function and Operation

– **Rotation Allowance**: The swing bearing seal allows the upper structure of the excavator to rotate smoothly while keeping the lubricants in place and contaminants out.

– **Lubrication Maintenance**: It ensures that the lubrication within the swing bearing is maintained over time, reducing friction and wear on the bearing surfaces.

– **Contamination Protection**: By blocking external contaminants, the seal helps prolong the life of the swing bearing and associated components.

Maintenance and Replacement

Inspection: Regularly inspect the swing bearing seals for signs of damage or wear

Cleaning: Keep the area around the swing bearing clean to minimize the risk of contaminants entering through damaged seals.

Replacement: If you notice any issues with the swing bearing seals, such as leaks or visible damage, replace them promptly. Continued use with damaged seals can lead to bearing failure and costly repairs.

Installation: When replacing seals, ensure that you use the correct parts specified by the manufacturer. Proper installation is critical to ensure that the new seals function effectively.

Troubleshooting Common Issues

Inspect and replace the seals if necessary.

– **Contaminant Entry**: If dirt or debris is entering the swing bearing area, it may be due to damaged seals. Clean the area and replace any damaged seals to prevent further contamination.

– **Noise**: Unusual noises from the swing bearing could indicate insufficient lubrication or contamination. Check the seals and lubricate the bearing as needed.

In summary, the swing bearing seal of an excavator is vital for maintaining the efficiency and longevity of the swing bearing assembly. Regular inspection, maintenance, and timely replacement of seals help ensure the smooth operation of the excavator’s swing mechanism and prevent costly damage.

HEAVY EARTHMOVERS PROVIDING BEST QUALITY SPARES ISNCE 1978

4218315 EX70 SWING BEARING SEAL

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