Double-row slewing bearings are crucial components in many heavy-duty machines, and noise can be a significant indicator of an underlying problem. Troubleshooting the noise involves a systematic approach to identify the cause and implement the correct solution.
Double row slewing bearing noise troubleshooting
1. Identify the Type of Noise and When it Occurs:
Normal Sounds: A new slewing bearing might produce a soft, uniform rolling sound of steel balls. This is usually normal and may fade after some rotation.
Abnormal Loud Noise: This indicates a problem and requires attention.
Grinding, Popping, Clicking, or Cracking: These are strong indicators of issues.
When does it occur?
New Bearing (before/after installation): Could be slight deformation from transport or improper installation.
Bearing in Service (after some use): Likely wear, lubrication issues, contamination, o componentes sueltos.
Under Load vs. Sin carga: Helps differentiate between issues related to stress and more general problems.
2. Initial Checks (General Troubleshooting):
Confirm the Source: Is the noise definitely coming from the slewing bearing? A veces, noises from other steel structures or components can be mistaken for bearing noise. Try stopping the slewing ring’s rotation while other components continue to work to isolate the sound.
Lubricación: This is often the first and easiest thing to check.
Lack of Grease: Insufficient or aged grease can cause rolling elements and separators to rub, creating noise. Timely greasing (every 100-250 horas de operación, or more frequently in harsh conditions) can often eliminate this.
Inspect Purged Grease: When you pump new grease into the bearing, observe the old grease that is purged out. If you see grit, partículas metálicas, or flakes, it indicates wear or contamination.
Incorrect Lubricant: Using the wrong type of grease or one with unsuitable viscosity can also lead to poor lubrication and noise.
Oil Leakage: Check for signs of oil leakage, which can indicate damage to seals or improper lubrication practices.
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