Lower Thrust Bearing Replacement

What is cone crusher Lower thrust bearing?

The cone crusher lower thrust bearing is a component located at the bottom of the cone crusher. It is one of the key parts of the crusher, which supports the entire weight of the crusher during operation. The lower thrust bearing helps to reduce friction between the moving parts of the crusher, ensuring that they operate smoothly and efficiently.

The lower thrust bearing consists of a number of components, including a thrust bearing housing, a thrust bearing, a thrust washer, and a thrust plate. The thrust bearing itself is typically made of bronze or other high-strength metal alloys that can withstand the high pressures and temperatures generated during the crushing process.

The lower thrust bearing is subjected to significant forces and stresses during operation, which can cause wear and tear over time. Therefore, it is important to regularly inspect and maintain the lower thrust bearing to ensure that it is functioning properly and to replace it if necessary. Failure to do so can result in reduced efficiency and performance of the cone crusher, and can even lead to more serious damage and costly repairs.

How to exchange cone crusher lower thrust bearing?

To replace a damaged or worn lower thrust bearing or to add shims to restore proper gear and pinion backlash and/or root clearance, proceed as follows:

1. To gain access to the thrust bearing, it will first be necessary to remove the Bowl, Head, Socket, and Eccentric Assemblies. Refer to the appropriate sections that follow for information on removing these assemblies.
2. Remove the socket head capscrews and spring washers that hold the thrust bearing to the main frame.
3. Thread a ring bolt into each of the two tapped holes in the thrust bearing.
4. Attach a suitable lifting device to the ring bolts and carefully lift the thrust bearing over the main shaft.
5. Check the replacement thrust bearing and the thrust bearing shims that are to be added to be sure there are no burrs or upset edges that would prevent the bearing or shims from lying flat against the main frame with full surface contact.
6. Checking backlash and root clearance to determine the correct amount of shims to be installed. Any additional shims to be added are placed on top of the existing shim stack. If a new thrust bearing is to be installed, remove the ring bolts from the old bearing and install them in the new bearing. Lower the thrust bearing in place making sure that all holes are properly aligned with the holes in the main frame hub. Make sure the bearing is properly seated on the shims.
7. Place a new spring washer over each hole in the thrust bearing. Insert capscrews through the spring washers, lower thrust bearing and shims into the tapped holes in the frame. Then alternately tighten each capscrew a small amount until they are tight.