Causes and Solutions for Stiff Spindle Rotation in Hydraulic Cone Crusher

The main shaft of a hydraulic cone crusher typically adopts a fixed-shaft design, with the main shaft and lower frame secured by a tapered interference fit. This structure can more stably withstand high loads and shocks, especially when processing hard materials. Its structural strength and bending resistance are superior to traditional cantilever beam main shafts. What are the causes of stiff spindle rotation in a hydraulic cone crusher, and what are the solutions?
 

1. Lubrication Issues. The main shaft and bearings require adequate lubrication to ensure smooth rotation. Check the lubrication system for proper operation, add the appropriate lubricant, and ensure the lubricant is of appropriate quality and viscosity.

2. Bearing Issues. The main shaft and bearings of the hydraulic cone crusher may be worn or damaged, causing stiff rotation. Check the bearings and replace any damaged bearings if necessary.

3. Impurities or Contaminants. Impurities or contaminants may enter the bearings or lubrication system, interfering with the normal rotation of the main shaft. Ensure the environment around the hydraulic cone crusher is clean to prevent the ingress of impurities.

4. Blockage in the crushing chamber. If material or gravel in the crushing chamber clogs the main shaft, it may cause sluggish rotation. Clean the crushing chamber to eliminate the blockage.

5. Overtightening. If the bolts securing the main shaft and bearings of the hydraulic cone crusher are overtightened, it may cause sluggish rotation. Loosen the bolts to reduce the tightening force.