In actual applications, many customers working on robotic systems encounter a common issue: after a period of operation, joints start to produce noise, sometimes with slight vibration.

At first, this is often considered a mechanical problem. But in many cases we’ve seen, lubrication plays a big role.

Typical causes include:

• Incorrect grease selection, especially for low-speed precision parts
• Grease degradation over time due to oil separation or evaporation
• Material compatibility issues between metal and plastic components
• 
  

In practice, this kind of issue is not unusual. Many customers overlook lubrication at the early stage.

Choosing a stable, low-volatility grease designed for precision parts usually helps a lot.

If you’re dealing with a similar situation, it’s worth checking the lubrication first.