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Troubleshooting Joint Bearings: Common Issues & Effective Solutions

Common Failures of Joint Bearings and Solutions

1. Product Definition and Function 1.1 Overview of Joint Bearings

  • Definition: A joint bearing is a special bearing with a spherical sliding contact surface that can bear large radial and axial loads.
  • Characteristics:
    • Good self-aligning performance
    • Can adapt to complex working environments
    • Easy installation and low maintenance cost

1.2 Main Functions

  • Applications:
    • Widely used in industries such as construction machinery, agricultural machinery, and automotive manufacturing
    • Especially suitable for applications requiring frequent oscillation or angular movement
  • Functional Value:
    • Reduces friction and wear
    • Improves mechanical equipment efficiency and stability

2. Common Failure Types and Cause Analysis 2.1 Increased Wear

  • Description: Obvious scratches or wear particles on the inner and outer ring surfaces
  • Main Causes:
    • Poor lubrication leading to dry friction
    • Contamination of the lubrication system by foreign particles
    • Long-term overload operation of the bearing

2.2 Sticking Phenomenon

  • Appearance: Poor rotation or even complete seizure
  • Cause Analysis:
    • Hardened or degraded lubricating grease
    • High temperature causing material deformation
    • Internal structure damage

2.3 Abnormal Noise

  • Sound Characteristics: Abnormal noise during operation
  • Causing Factors:
    • Improper clearance between parts
    • Installation errors causing excessive preload
    • Surface roughness not meeting standards

2.4 Excessive Temperature Rise

  • Temperature Change: Operating temperature exceeds normal range
  • Causes of Heat:
    • Improper choice of lubricants
    • Poor heat dissipation conditions
    • Excessive rotational speed

2.5 Corrosion Risk

  • Appearance: Rust spots or corrosion marks on the metal surface
  • Cause Analysis:
    • High environmental humidity
    • Contact with corrosive substances
    • Failure of surface protective layer

2.6 Shortened Lifespan

  • Service Life: Actual service time far below the design lifespan
  • Influencing Factors:
    • Improper design and selection
    • Improper use and maintenance
    • Harsh working conditions

3. Fault Prevention and Solutions 3.1 Correct Selection and Installation

  • Proper Selection:
    • Choose the appropriate model according to operating conditions
    • Ensure load capacity and speed compatibility
  • Standardized Installation:
    • Follow the instructions precisely
    • Control installation accuracy and alignment

3.2 Enhancing Daily Maintenance

  • Regular Inspections:
    • Check lubrication conditions and sealing effectiveness
    • Observe surface conditions and temperature rise
  • Timely Cleaning:
    • Remove external dirt and internal contaminants
    • Replace aging seals

3.3 Optimizing Lubrication Management

  • Selecting Quality Lubricants:
    • Choose the appropriate grease based on working conditions
    • Ensure lubricant quality is reliable
  • Scientific Grease Injection:
    • Control the amount and frequency of lubrication
    • Avoid over or under-lubricating

3.4 Improving Working Environment

  • Control Environmental Parameters:
    • Maintain suitable working temperature and humidity
    • Prevent corrosion from harmful substances
  • Take Protective Measures:
    • Install dust covers or waterproof sleeves
    • Add heat dissipation devices

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