Cone Crusher Bowl Liner

What is the cone crusher bowl liner?

A cone crusher bowl liner is a component that is fixed to the top of a cone crusher chamber and is designed to protect the chamber’s inner walls from the wear caused by the crushing process. The bowl liner is made of wear-resistant steel and is shaped like a bowl, hence its name.

During the crushing process, the bowl liner is subjected to intense wear from the material being crushed and the constant friction between the liner and the mantle. Over time, this wear can cause the liner to become thinner and may even result in cracks or breaks. When this happens, the bowl liner needs to be replaced to ensure that the crusher continues to operate at its optimal performance.

The bowl liner is an essential component of the cone crusher and its role is crucial in maintaining the efficiency and performance of the crusher. It helps to protect the crusher chamber from damage and to ensure that the material being crushed is processed effectively.

Bowl liner removal

Remove the bowl liner as follows:

Remove the adjustment cap from the bowl.
Thoroughly clean the threads on the adjustment ring, clamping ring, and bowl, removing all traces of dirt, rust, and old grease.
Lift the feed hopper from within the bowl. This will give access to the wedges which hold the bowl liner to the bowl. The wedges are located on top of the bowl adapter ring dowelled to the bowl.
Remove the cotter pins that hold the lock plates to the wedges. Then lift out the lock plates, this will expose the spherical nuts and permit the wedges to be loosened. Using an open-end wrench, unscrew the spherical nuts on the square head bolts. These nuts hold the wedges against the bowl liner. With a hammer and a blunt chisel, drive the wedges out.
Lift the bowl off the liner. Occasionally the backing material, if the bowl was improperly prepared, may lock the liner in the bowl. If the bowl sticks to the liner, ram vertically on the top of the liner to break loose the backing material.
Chip off any backing material which might remain on the bowl. Usually, the backing material will adhere to the liner and little, if any, chipping is required on the bowl.

Bowl liner installation

Install the bowl liner as follows:

Place the bowl liner on suitable wooden blocking. Be sure the blocking will permit the bowl to seat fully on the liner. Apply a light coating of lubricating oil to the INSIDE OF THE BOWL to prevent the backing material from sticking to the bowl.
Lower the bowl and adjustment cap in position on the bowl liner with the bowl adapter ring in place in the bowl. To insure self-tightening, position the bowl over the bowl liner so that the wedges will contact the highest point of the helix on the bowl liner.
Pre-assemble each of the square head bolts, spherical nuts, and wedges. Make sure that the spherical surface of the nut is against the wedge.
Place each wedge assembly on top of the bowl adapter ring and into a cored pocket around the inside of the bowl. The wedge assembly should also fit between stop blocks welded to the top of the adapter ring. These stop blocks prevent the wedges from moving sideways as the liner self-tightens. Such movement of the wedges could cause the bowl liner to become loose.
Using an open wrench, turn the spherical nut behind each wedge until the wedge engages in the helix on the bowl liner.
Alternately tighten each nut, in a criss-cross pattern, until all the wedges are tight against the helix portion of the bowl liner. The wedges must be securely tightened and properly seated in the bowl. Check that the bowl liner bears tightly, against the bowl by using a feeler gauge all around the liner seat. Clearance should be no more than 0.025 mm (0.010″). Should any openings exist due to wear on this area of the bowl, pack these openings with clay, caulking, or glazing compound to keep the backing from leaking out during pouring.
Prepare backing material. Then pour the backing material, filling the entire cavity behind the bowl liner.
Recheck all the wedges and spherical nuts for tightness after the backing has hardened.
Install the lock plates over the spherical nuts and fasten the lock plates to the wedge using a long cotter pin. The lock plates will keep the spherical nuts from vibrating loose and causing the bowl liner to become loose in the bowl.
Weld a 12 mm x 12 mm x 40 mm (1/2″ x 1/2″ x 1-1/2″) long steel bolt stop to the bowl, just above the head of the square head bolt. The stop will keep the bolt from «slipping» upwards during the operation of the Crusher, which could cause the bowl liner to become loose.
Replace the fiberglass insulation covering the bowl liner wedge assemblies, to keep dust and dirt from packing around the wedge assemblies and making future liner removal difficult.
Reinstall the feed hopper over the dowels in top of the bowl.
Lubricate the bowl, clamping ring, and adjustment ring threads. This is most important to insure free rotation of the bowl within the adjustment ring.
Reassemble the remaining components.

Cone crusher bowl liner by Qiming Casting

Qiming Casting is a professional manufacturer of high manganese steel wear-resistant castings in China, producing various types and brands of cone crusher bowl liners for popular brands. Based on different working conditions, Qiming Casting supplies different material bowl liners, such as: