When it comes to customised engineering solutions for the mining and heavy equipment industries, few companies match the depth, expertise, and hands-on ingenuity of HAMR Engineering. From line boring and CNC machining services to the supply and manufacture of advanced mechanical parts, we don’t just fix what’s broken — we build smarter, tougher, longer-lasting components designed for the challenging environments of Western Australia.

Based right here in Kalgoorlie-Boulder, we know what it means to work hard and get the job done right. Whether you're working underground, on site, or in a regional workshop, our fit-for-purpose fabrication, precision machining, and innovative upgrades keep your equipment reliable, safe, and efficient.

Built to Perform — Our Full Spectrum of Custom Fabrication Work

The HAMR Conversion System

At the heart of our innovation is the HAMR Conversion—our flagship upgrade for Sandvik LH514, LH517, and LH621 boggers. Developed through years of practical fieldwork and customer collaboration, the HAMR Conversion pin and collet system delivers longer life, better wear resistance, and reduced downtime.

• Extended lifespan: Some customers are clocking up to 7800+ hours on their HAMR Conversion components. That’s up to 10x better performance than OEM parts.
• Less frame wear: Not only do our conversions protect the pins and bushings, but they also reduce wear across the loader frame itself.
• Cost savings: Fewer replacements, less line boring, and reduced downtime mean major savings.
• Fitter-friendly: The design considers those doing the work. In fact, based on feedback from fitters, we now include QR code-linked install guides in our kits to avoid paper waste and improve usability onsite.

If you're not already using the HAMR Conversion bucket kits—you might be missing out. Our kits are being shipped across WA and internationally to places like Queensland and even Alaska.

Custom Brackets, Mounts & Reinforcement Components

From tilt link mounts to bogger bucket pins, HAMR Engineering manufactures and machines a wide range of high-strength brackets and reinforcement components. Our work includes:

• Tilt link brackets and frame mounts for LH517i and LH621 loaders
• Upper and lower lift cylinder pin kits and conversions
• Centre hitch pin and collet upgrades for improved wear life

If your equipment frame is wearing out before the component does, you need a HAMR upgrade.

Advanced Parts Supply and Engineering Conversions

LH517 & LH621 Bogger Conversions

We’ve become a go-to name in conversion kits for Sandvik boggers, especially the LH517 and LH621 variants. Our in-house designs include:

• Bucket and centre hitch kits
• Tilt link assemblies and lift pin kits
• Swing lever centre pin and collet upgrades

Each of these are designed to improve component service life and reduce frame wear, saving you money on downtime and long-term repairs.

We don’t just design these parts — we 3D print prototypes, test-fit them, and trial them in the field before rollout. That’s the HAMR difference.

Epiroc Pins and Bushings

Need replacement components for your MT65 Epiroc fleet? HAMR Engineering stocks and supplies a full list of high-wear pins and bushes, including:

• 5590017349 Hoist PIN
• 5590012127 Suspension PIN
• 5590015734 Dogbone PIN
• 5590017598 Watts Linkage PIN
• 5590018362 Strut PIN
• 5590017599 Watts Linkage Bush (incl. dust seals)
• 5590017148 Bronze Tray Pivot BUSH

All are manufactured to tight tolerances to ensure OEM fitment and reliable performance.

A Glimpse into Line Boring and Machining Services in Kalgoorlie through HAMR Engineering's Lens Line boring and machining services are essential solutions in ensuring that machinery and components are in optimal working condition, especially in Kalgoorlie's mining and heavy industry sectors. Choosing the right service provider…Read more

Precision Machining, Line Boring & Onsite Services

We’re not just fabricators — we’re line boring and machining specialists. Our in-house and mobile line boring teams help reduce downtime and improve your turnaround.

Custom Metal Fabrication You Can Count On

Our fabrication team delivers it all. If you need a custom part or build that can handle real-world abuse, we’ve got the skills and equipment to make it happen.

Our Fabrication Work Includes:

• LH517 classic rear axle cradle refurbishment – 100% MPI tested, cracked repaired, skimmed, line bored, and finished with high-quality paint.
• Custom haul truck accessories, including pin upgrades for the 773 service truck, fitted without removing the wheels—something other firms said couldn’t be done.
• Dozer blades, dog bones, and bogger mods – All built, tested, and ready to perform.

Mobile Line Boring Services

HAMR Engineering offers onsite line boring throughout the Goldfields and beyond. 

Downtime is costly, especially when remote mining operations rely on quick turnarounds. Our mobile line boring service is designed to reduce wait times and keep your machines moving.

• Fast dispatch to WA mine sites
• Precise machining to OEM or improved specs
• Integration with our custom parts, including HAMR Conversion-ready components

From loader pivots to excavator bores, we can restore your gear to spec fast. With certified line boring technicians and rapid-response schedulling, you get:

• Bore re-machining for worn pivot points
• In-situ welding and machining
• Certified tolerance restoration

CNC Machining

Every good upgrade starts with smart engineering. 

That’s why we use CNC machining, 3D modelling, and even 3D printing to test and verify each component before it ever reaches your site.

Our CNC machines are set up to handle both small- and large-scale production runs. From one-off custom pins to full batch component production, our CNC machining ensures precision and repeatability with tight tolerances.

We also support:

• Custom lathe and mill work
• Threading, grooving, keying
• Component duplication and part upgrades

Whether you need a once-off emergency part or a long-term partner for custom equipment, we’ve got the capability to deliver.

Real Projects. Real Results.

Our customers come to us because we solve problems. Whether it’s delivering four full LH517-BD-RK kits, a new LH517-TL-RJ kit, or building a new centre hitch for a TH663i, we manufacture and ship quickly across the Goldfields and Australia-wide.

Field-Tested, Mine-Approved

Trial installations of our HAMR CONVERSION components have shown incredible results:

• Perfect fitment on first trial installs
• Reduced frame wear in loader applications
• Extended lifecycle of pins, bushes, and collets

This is why entire fleets, from the Goldfields to Queensland, are switching over to our upgrade kits.

Global Reach, Local Pride

We’re proud to be a WA company supporting WA industries—but our reach is global. Whether it’s a dozer blade, a dog bone, or a complete pre-delivery conversion, we’re shipping high-performance parts to clients across the world. 

Supporting the Industry, One Part at a Time — We’ve Got Your Back!

At HAMR Engineering, we don’t just build metal – we build confidence.

• Need a custom frame? We’ll build it.
• Need a hard-to-source pin? We’ll machine it.
• Need on-site line boring? We’ll send the team.

We’re not in the business of quick fixes. We’re here to engineer smarter, longer-lasting solutions for the real challenges faced by miners, mechanics, and maintenance teams across Western Australia.

Whether you’re in the Goldfields, out in the Pilbara, or managing a mine site overseas, HAMR Engineering is ready to help you cut costs, reduce downtime, and improve safety with better parts and service.

• 24/7 workshop operations
• Experienced in Sandvik LHDs, haul trucks, and underground machinery
• Genuine collaboration with fitters, supervisors, and site managers

So if you’re ready to get more out of your fleet, it’s time to GET HAMR’D.

Reach out to sales@hamreng.com.au for pricing, availability, and support.