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SERVICES

GEARBOX REBUILDs

Precision Repairs for Large Gearboxes

Boundary, through United Gear, provides gearbox repair for heavy industrial equipment. We focus on consistent performance, longer service life, and reliable operation in demanding conditions.

INTRO

Our repairs are built on how the equipment actually runs. Each gearbox is evaluated beyond the OEM baseline, with practical modifications made where rebuild history, wear patterns, and site conditions show a way to improve reliability. From standard repairs to full rebuilds, the goal is to return each gearbox ready for service.

REPAIR AND RETURN

Gearboxes are fully disassembled, inspected, and rebuilt using a consistent process. 

  • In-house engineering support for design improvements, reliability upgrades, and life extension

  • Certified, experienced tradespeople with deep mining and heavy equipment repair backgrounds

  • Modern repair and manufacturing technology, including gear measuring, CNC machining, and large-scale drivetrain equipment

  • Proven capability to inspect, reverse engineer, repair, and manufacture large-scale gearboxes and critical drivetrain components for shovels, draglines, and processing equipment

  • Ability to produce gearing for obsolete equipment through reverse engineering and in-house manufacturing

  • Third-party inspection and reporting available when required for added transparency

Each unit is returned with clear documentation of its condition and the work completed.

BEFORE
AFTER

PERFORMANCE UPGRADES

Some applications require more than a standard repair. We rebuild gearboxes with improvements based on how they are used in the mines. 

  • Reinforcement of high wear areas

  • Material and component upgrades where required 

  • Adjustments based on operating conditions  

This supports more consistent performance and longer service intervals. 

ENGINEERING AND OPERATIONAL INSIGHT

We work across a full range of gearbox applications in heavy industry.

  • Review of internal condition and wear patterns  

  • Assessment of operating conditions  

  • Recommendations to support performance and service life 

  • Equipment We Support 

    • Works across a full range of gearbox applications in heavy industry. 

  • Mining Equipment 

    • Rope shovels including swing, propel, hoist, and crowd drives 

    • Hydraulic shovels 

    • Drills and support equipment 

  • Material Handling 

    • Apron feeder drives 

    • Conveyor systems 

    • Ship loaders 

  • Industrial Applications 

    • Pulp and paper equipment 

    • Pump drives 

    • General rotating equipment 

All Makes and Models

Servicing gearboxes across major OEMs and configurations.

  • Flender  

  • Sumitomo  

  • Santasalo  

  • Hayward Gordon  

  • Other manufacturers as required 

Built on Real Work 

Every gearbox is documented through the full process, from teardown to assembly to testing. Customers receive clear reporting on condition, findings, and completed work, so they can see exactly what was done and why.

Need support on a gearbox? 

We work with maintenance and operations teams to assess condition, plan the work, and get equipment ready for service. 

talk to our team