Quality, Reliability, Availability

Reducing Maintenance Costs with Better Parts

In the last 40 years Boundary’s hydraulic shovel undercarriage components have been tested in the most challenging mining regions in the world and demonstrated the highest level of performance.

From the smaller PC3000 to the PC8000, Boundary has replacement components to reduce cost and improve productivity.


Track Shoes

Boundary’s Komatsu track shoes have been optimized for reliability.

Available for the PC3000, PC4000, PC5500 and PC8000. PC8000’s are available in both standard and wide.

Cast in a proprietary alloy to achieve hardness levels exceeding industry standards.

The material has been designed to have an impact value suitable for mining operations in Canada, United States, Chile, Peru, Africa and anywhere else in the world.

100% interchangeable with OEM components.


Drive Tumbler

Manufactured in a proprietary alloy to ensure reliability, wear life and lower cost of ownership.

Available for PC3000, PC5500 and PC8000.

Splines cut and tested with gauge by gearing affiliate United Gear & Machine Works Ltd.

100% interchangeable with OEM.


Front Idler

Optimized material and heat treatment processes to extend life.

Available for PC3000, PC5500, PC7000 and PC8000.

Idler wheel is induction hardened to extend life.

Proven modified manganese bronze bushings.

100% interchangeable with OEM.


Slider Rail System

Boundary has designed a system to replace the top rollers on all of the Komatsu hydraulic shovels. The Slider Rail System (SRS©) has met the demands of the toughest mining environments in the world.

Available for PC3000, PC5500, PC7000 and PC8000.

Sliders are manufactured in a proprietary manganese that is optimized for the sliding application.

The slider system mates with OEM side frames and track shoes to ensure optimal fit.



  • Models We Service

    Komatsu PC8000

    Komatsu PC7000

    Komatsu PC5500

    Komatsu PC4000

    Komatsu PC3000

  • Undercarriage

    Track Shoes

    Front Idlers

    Drive Tumblers

    Lower Rollers

    Slider System

    Pins & Bushings


  • Transmissions

    Final Drive Rebuilds

    Swing Rebuilds

    Pump Drive Rebuilds

  • Cylinders

    Clam Rebuilds

    Stick Rebuilds

    Boom Rebuilds

    Bucket Rebuilds



Large Cylinder Rebuilds

Optimize performance and improve reliability.