Updated crusher line simplifies maintenance, extends wear life
McLanahan’s line of Universal jaw crushers underwent a series of design updates.
Improvements were made to the stationary jaw die. The new die design has a bevel that rests in a matched groove on the lower clamp plate and is secured by upper clamp plates with a groove to match die bevel. Dies are also reversible to utilize more wear metal, improving their life. Clamp plates match both upper and lower die bevels.
This new Universal design features replaceable upper and lower stationary jaw die clamp plates that are lighter, making it easier to install, replace and secure the die. Operators no longer have to rely on heavy key wedge or heel plate-style side-liners to lock the dies in place. In addition, all clamp plates are interchangeable if one side or the top or bottom experiences more wear.
Universal jaw crushers previously featured long, one-piece side liners, the company says. This meant the entire part needed to be replaced when a section was worn. Now, there are three cheek plates per side (top, middle and bottom). This allows liners in high wear areas to be replaced independently of other liners.
Maintenance is simplified by the inclusion of several replaceable parts in the new Universal jaw crusher design, McLanahan adds. The barrel liner, which protects the barrel of the pitman from rock impact and scuffing, is replaceable, as is the smash plate, which absorbs impacts, and wears and deforms before the crusher frame/pitman, prolonging the life of the frame/pitman.
When performing maintenance, the new self-aligning locking wedges are adjusted from the rear of the crusher. This area is usually allotted the most space for maintenance, and operators don’t have to work around drive guards. Universal jaw crushers now come equipped with a safety pin that will lock the pitman in a closed position when maintenance is being performed.