
Large Cylinder Rebuilds
Cylinder Rebuilds for Large Mining Equipment
Boundary supports large-cylinder rebuilds for hydraulic shovels through our affiliate Bridge Machine. From Komatsu PC and Hitachi EX machines to selected auxiliary equipment, the focus is on rebuild work that helps get critical equipment back into service.
MACHINES WE SUPPORT
Komatsu hydraulic shovels
PC3000 – PC9000
Hitachi hydraulic shovels
EX2500 – EX8000
Auxiliary equipment
Various Komatsu, Hitachi, CAT and Terex dozers and haul trucks
OUR REBUILD PROCESS

Review the Application
We begin by understanding the machine, cylinder function, operating conditions, and service history. That helps define the rebuild scope and identify the issues that matter before work begins.

Tear Down and Inspect
Each cylinder is disassembled and inspected to evaluate wear, damage, and overall condition. The goal is to understand what can be repaired, what needs replacement, and what the rebuild needs to address before the cylinder returns to service.

Machine, Hone, and Repair
Required repair work is carried out using the machining, honing, welding, and shop support needed for large-cylinder rebuilds. This is where the condition of the component is turned into a defined repair plan.

Rebuild and Final Check
Once repairs are complete, the cylinder is rebuilt and reviewed before return to service. The focus is on a rebuild that fits the application and supports reliable operation in the field.
BACKED BY A QUALITY-DRIVEN PROCESS
Large-cylinder rebuilds need more than shop capacity. They need consistency. Through Bridge Machine, founded in 1980, Boundary supports rebuilds with an experienced, process-driven approach built for repeatable results.

TALK TO US ABOUT YOUR REBUILD
If you are planning work on a Komatsu PC, Hitachi EX, or selected auxiliary machine cylinder, Boundary can help review the application and scope the rebuild.
