Causes of Slew Bearing Noise
2 Answers
Slew bearing noise can be caused by uneven mounting surfaces, impurities inside the slew bearing raceway, or insufficient lubrication. Uneven Mounting Surface: If the flatness of the mounting surface does not meet requirements, it can create negative clearance in the raceway, leading to noise. Improper installation, whether too tight or too loose, can also cause slew bearing noise. Impurities Inside the Slew Bearing Raceway: Particles such as sand or metal shavings inside the slew bearing raceway can cause noise. In such cases, the machinery often struggles to operate properly. Insufficient Lubrication in the Slew Bearing: Check if the raceway lacks lubrication. If so, adding lubricant can reduce friction between components.
Last time I researched car bearing issues, I learned that there are quite a few reasons for slewing bearing noise. The main problem lies in insufficient internal lubrication or lack of grease in the bearing. After prolonged use, the grease dries up, causing harsh metal-to-metal friction sounds—something I've encountered several times in my own car. Another factor is component wear; deformed or fractured balls or raceways can produce clicking noises, especially in older cars that have been driven for a long time. It could also be due to installation errors, such as loose screws or deformation caused by external impacts. I recommend promptly checking the lubrication condition at a repair shop and replenishing the grease, while regular maintenance can prevent the noise from worsening. Ignoring it can affect steering stability and increase driving risks.
