Heavy Duty Steel Crawler Undercarriage Assembly

Murphy Construction Machinery (Shandong) Co., Ltd. is one of the leading manufacturers and suppliers of heavy duty steel crawler undercarriage assembly in China. If you're going to buy the newest heavy duty steel crawler undercarriage assembly, welcome to get pricelist from our factory. All customized products are with high quality and low price.

Steel undercarriage. 3 to 200 tons.
Most buyers don't lose money on the purchase price. They lose it on downtime-a seized roller, a cracked frame, a track that won't stay tensioned. We build the complete assembly around your mounting pattern: Q345B beam, sealed rollers, hardened sprockets. Bolts on without adapters. No re-drilling on your side.

 

Custom geometry, not custom wait.
The structural core stays consistent across the tonnage range. Only your interface is drawn from scratch. That's how a 120-ton drilling rig chassis avoids a six-month lead time. Travel drives matched to your hydraulic flow, not a catalog guess. Whether it's a roadheader in coal or an exploration rig on mountain grade, the engineering logic holds.

 

Send tonnage and bolt layout.
Steel systems in the 20 to 80 ton band often reuse existing frame dimensions. Larger goes through dedicated engineering. Replacement rollers and idlers stay available after the sale. The quote costs nothing-and neither does the first conversation.

Buyers often compare undercarriage on price per unit. The number that matters is cost per hour on their own ground. Even wear on rollers and sprockets extends track life; budget systems often suffer early link breakage.

Custom tracked undercarriage engineered for your duty cycle for stable long-term performance, fewer adjustments and higher uptime.

Well-matched track systems for drill rigs, mini excavators and compact loaders offer stable performance from day one. No constant tension checks. No surprise wear patterns. Just a machine that does its job without the undercarriage becoming a second job.

The load path is calculated before the steel is cut. Whether the host machine is a drilling rig, crusher, or piling unit, the track frame and roller layout are set to carry that specific load through the ground it will actually cross. No generic frame stretched to fit a job it was not designed for.

Steel track undercarriage works best when the whole system is matched. Drive sprocket, idler, track shoe, and travel motor are selected as a set, so the wear surfaces work together rather than against each other. That is what keeps a crawler undercarriage assembly running through long shifts on abrasive ground.

Fit-up is settled before shipment, not on your site. Mounting faces and hydraulic connections are prepared to your host machine's interface, so the tracked chassis arrives as a unit your team can put into service without fabrication work.

A crawler undercarriage assembly is only as good as its fit to the machine above it. We produce the full running gear-track frames, track chains or rubber tracks, rollers, idlers, sprockets, and travel drives-for drilling rigs, exploration units, tracked carriers, compact drills, solar piling rigs, and geological survey machines, matched to a broad range of machine weights. The load case, not the catalog, decides the spec.

Your existing host machine does not need to be modified to take our chassis. Submit frame drawings, mounting layouts and hydraulic points. We engineer the matching undercarriage interface for both new builds and retrofits.

Standard chassis rarely fit site conditions. Provide site details and machine weight; we size track width, ground pressure, clearance, gauge and travel speed to avoid sinkage and overload.

What we list is what we measured, and every order leaves with a technical datasheet and drawings. That gives your team something solid to design around, file, and get signed off.

More product specifications

No two jobsites load a chassis the same way, so we start with your duty cycle and host machine, then work out track frame proportions, roller arrangement, and mounting points as a single package. If the standard range doesn't cover it, our engineers develop a fresh steel track chassis layout and run the structural checks before anything is machined.

Prototype builds and regular OEM ODM undercarriage supply are held to the same process standard, from machining through final inspection. Because the work stays under our own roof, promised dates don't drift, and that consistency is why equipment makers keep coming back.

Custom crawler undercarriage for drill rigs & aerial work platforms. Interfaces machined after welding and stress relief for direct fit, zero on‑site rework.

The travel assembly is where uptime is determined. Rollers, idlers and sprockets operate within sealed housings paired with load‑rated gearing, blocking abrasive dust and reducing impact wear. For buyers evaluating tracked chassis suppliers, this distinction directly impacts machine downtime frequency.

Plenty of suppliers can show you a catalog photo of a crawler undercarriage assembly. Fewer can walk you through the fixture that holds the main frame square during welding, or explain why the hardened depth on a track roller matters more than its shiny finish. We can, because that work happens here.

When you're sourcing a custom steel track undercarriage for a rig, a carrier, or a specialty machine, the real question isn't price per unit - it's who controls the process. Ours stays in-house from plate to paint, so a design tweak on a prototype doesn't trigger a chain of outside vendors. Send your spec, and we'll quote it against our actual floor capacity, not a wish list.

A water-well drilling outfit in East Africa was losing days whenever the ground turned to black cotton soil - their rig would bury itself before reaching depth. We shipped a custom crawler undercarriage assembly with wide flotation shoes and sealed rollers, and the rig now walks onto the pad under its own power. They've come back for additional steel track undercarriage units as their rig count climbs, which is the kind of repeat business that tells you the design holds up.

For a European OEM building tracked drill rigs, we took on a prototype crawler chassis with specific mounting tolerances, validated it through field trials, and then moved into ongoing OEM undercarriage supply. Each reorder arrives with the same bolt pattern and frame geometry, so their line never has to re-jig. If you're looking for an OEM or aftermarket track undercarriage assembly for a rig, carrier or piling unit, send your model, tonnage and ground conditions - we'll come back with a matched spec and a clear quote.

Container space is money, so we plan the loading of every crawler undercarriage assembly before the first strap goes on. Frames are nested and braced against the walls, track assemblies and final drive units get their own blocked zones, and nothing rides loose across the ocean. The goal is simple: you open the doors and the undercarriage is where we put it, undamaged.

We also handle the paperwork side so your freight forwarder isn't chasing us for documents. Packing list, shipping marks, and product details for the crawler chassis go out with the shipment, and we work under FOB or CIF as you prefer. A clean handover at the port saves your team days.

How To Cooperate With Us?

 

Murphy Company opened its doors in 2022, but the people steering it had already clocked well over ten years in construction machinery.

 

Every tracked chassis assembly we design begins the same way-by asking how this host machine will actually behave on site. That answer then shapes everything: track shoe width, chassis size, load capacity, travel speed, and supporting parts are all customized to your requirements. What you walk away with is a tailor-made crawler solution ready for engineering, construction, and mining work of all kinds.

• Phone Number

  + 86 175 6277 7823

• Phone Number
  mefgcjx@126.com

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