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

Crawler Undercarriage Assembly for Drill Rig. Mounting interface is yours.
Most suppliers sell you a Crawler Chassis and hope your bolt holes line up. We start from your drawing. Track frame, center frame, travel base-fabricated as one matched steel crawler undercarriage assembly, 3 to 200 tons.
Drill rigs and crushers don't get gentle sites.
Mud, rock, grade. Steel track undercarriages earn their keep when the ground stops cooperating. We match travel drives to your hydraulic flow, not a catalog guess. Center of gravity shifted? We adjust roller positioning and frame geometry before fabrication, not after delivery.
Drawing in. Proposal out.
Send tonnage and bolt layout. Steel systems in the 20 to 80 ton band often reuse proven frame dimensions. Larger goes through dedicated engineering. Replacement rollers and idlers stay available after the sale. The quote costs nothing.
Product Advantages
A crawler undercarriage's value lies in predictable wear, not low component unit price. Site-tailored materials and surface treatments turn guesswork into scheduled replacement, letting you budget maintenance and cut unplanned downtime.
The logic of travel-drive selection is essentially a reconstruction of the machine's "motion profile." Drilling rigs are characterized by slow creeping and prolonged position-holding, so their drive systems must be built around holding torque and micro-motion precision: the hydraulic motor and gearbox must still deliver stable torque at zero or extremely low speed without slipping, the control valve group must ensure centimeter-level inching response, and the braking and holding circuit must guarantee hours of position-holding without drift. On the same undercarriage platform, the drive solution changes with the working conditions, so the machine truly "keeps pace with" the construction rhythm instead of forcing the work to accommodate the machine.
Crawler undercarriage integration risk mainly comes from host machine interfaces. We validate flange, crossmember and hydraulic details at the design stage for bolt‑on‑and‑go delivery, eliminating on-site rework.

Manufacturing Capacity
A crawler undercarriage assembly is only as good as the last process it goes through, and too many suppliers treat inspection as a formality. Ours runs dimensional checks on the assembled frame, not just on individual components - because a track frame that's square on paper can still twist once it's welded.
That habit comes from building steel track undercarriages for rigs and specialty machines long enough to know where problems hide.Selecting an OEM crawler chassis supplier? Our engineers review drawings upfront. Stress relief, NDT and dimensional checks catch hidden risks generic shops miss.

Structural Details
When you're sizing up crawler undercarriage manufacturers for an OEM build, the thing worth checking is how the track frame goes together-before anyone reaches for the paint gun. Box-section weldment, stress-relieved prior to mounting-face machining. The frame holds true for accurate, drop-in alignment. No shimming on site, no "we'll make it fit" conversation in the field.
The running gear is what takes the daily punishment. Sealed rollers and idlers keep grit out of the bearings, and a drive train matched to the actual load soaks up the impact before it chews into wear parts. If you're comparing tracked hydraulic steel track undercarriage suppliers for a long-term program, this is the part of the spec sheet that tells you something real about downtime-not the glossy numbers up front, but how the frame is built and how the running gear is protected.

Technical Parameters

TYPE D/ Rotating shaft type TYPE E/ Prefabricated (upper flange)
| CODE NAME | TYPE | A | B | C | D | E | F | G | APPLICATION |
| MEFH55 | A | 1683 | 2133 | 608.5 | 885 | 400 | 557 | 757 | 5.5Ton Skid Steer Loader |
| MEFZ70 | A | 1792 | 2345 | 301 | 597 | 300 | 228 | 378 | 7Ton Tunneling Machine |
| MEFD90A | A | 2269 | 2806 | 288 | 582 | 400 | 235 | 435 | 9Ton Pipe Laying Machine |
| MEFD100 | E | 3473 | 4023 | 295 | 670 | 300 | 475 | 475 | 10Ton Underground Mobile Equipment |
| MEFZ100 | A | 2190 | 2754 | 292 | 601 | 300 | 227 | 387 | 10Ton Drilling Rig |
| MEFZ110 | D | 2095 | 2705 | 309.5 | 652 | 400 | 360 | 560 | 11Ton Drilling Rig |
| MEFZ120 | B | 2115 | 2626 | 262 | 527 | 300 | 233 | 395 | 12Ton Drilling Rig |
| MEFZ140 | D | 2513 | 3125 | 301.5 | 686 | 400 | 505 | 656 | 14Ton Drilling Rig |
| MEFZ150 | D | 2653 | 3384 | 380.5 | 839 | 400 | 543 | 725 | 15Ton Drilling Rig |
| MEFP150 | A | 3432 | 4061 | 327 | 649 | 300 | 277 | 471 | 15Ton Material Conveyor |
| MEFZ180 | A | 3968 | 4733 | 393.5 | 800 | 500 | 347 | 599 | 18Ton Drilling Rig |
| MEFY200 | A | 3751 | 4540 | 419 | 844 | 500 | 397 | 647 | 20Ton Dam Transport Machine |
| MEFP250 | A | 3311 | 4030 | 332.5 | 738 | 400 | 262 | 462 | 25Ton Mobile Crushing Station |
Compatible Equipment
Fit is everything with a crawler undercarriage assembly. We build the whole running gear in-house-track frames, track groups or rubber tracks, rollers, idlers, sprockets, and travel motors-for drilling rigs, exploration equipment, tracked carriers, compact drills, solar piling machines, and geological survey rigs, sized across a wide range of machine weights. The duty cycle decides the spec, not a stock list.
You should not have to touch your host machine to make our chassis work. Send frame, mounting and hydraulic details. Identical process for retrofit or new builds - zero rework or costly changes to your host machine.

Customization Capacity
We design crawler undercarriage assemblies from the load path outward. Your machine's weight distribution and working conditions tell us how the track frame should be proportioned, where the rollers belong, and how the mounting interface should sit - all resolved with structural checks before a custom track frame goes into production.
Capacity is planned, not promised. Prototype chassis and repeat OEM crawler chassis orders are scheduled on the same shop floor, with machining, assembly, and inspection steps visible at every stage. That's how delivery dates stay realistic and long-term supply stays steady.

Project Cases
A trenching crew in the Australian outback was chewing through track chains on hard, rocky spoil, and every breakdown meant a crew standing idle. We built them a heavy-duty steel track undercarriage assembly with hardened shoes, and the machine now keeps trenching through ground that used to stop it. The same contractor has since ordered more crawler undercarriage units for new machines, which tells you more than any sales pitch.
A Southeast Asian OEM making compact tracked carriers needed a reliable crawler chassis that wouldn't need constant rework on the line. We delivered a prototype, ran it through real site conditions, and now supply the same crawler undercarriage system in regular batches. Mounting points stay consistent, so their assembly team stopped chasing tolerance issues. If you need a custom crawler undercarriage assembly or a proven OEM track undercarriage for a rig, carrier or piling rig, send your model and working weight - we'll match the spec and quote it straight.

Customize various types of chassis
Our steel track chassis comes in a variety of specifications and models, completely customized according to the equipment you are using, so there will be no mismatch. You only need to tell us the load, operating conditions, and technical requirements of the equipment, send us the drawings, and we can quickly match the track assembly that is truly suitable for your equipment. We are the original manufacturer of construction machinery chassis in China, helping you avoid the price difference of middlemen, providing quotes and technical solutions completely free of charge

Customization Process
Packaging & Shipping
Two things ruin a crawler undercarriage assembly in transit: movement and moisture. We deal with both before the container doors close. The frame gets blocked against the walls, the track assembly and travel drive are fixed in their own zones, and moisture barrier film goes on every machined surface. Nothing rubs, nothing rusts.
Loading follows your container dimensions, so the space works in your favour instead of against it. Documents travel with the crawler chassis-packing list, marks, specs-and FOB or CIF terms are both fine on our side. When the container lands, your team opens it and gets to work, not to repairs.

Contact Us
How To Cooperate With Us?
Murphy Company first opened in 2022, yet the people at the helm had already spent well over a decade in construction machinery.
Every tracked chassis assembly we design starts the same way-by asking how this host machine will actually behave on site. That answer drives every decision: track shoe width, chassis size, load capacity, travel speed, and supporting parts are all customized to your requirements. What you take away is a tailor-made crawler solution ready for engineering, construction, and mining work of all kinds.
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Phone Number
+ 86 175 6277 7823
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Phone Numbermefgcjx@126.com


FAQ
Q:Are you a manufacturer or a trader?
A:We are a manufacturer with over 10 years of experience, specializing in the design and production of steel track undercarriages.
Q:What is your minimum order quantity (MOQ)? Do you accept sample orders?
A: The MOQ varies by product; for tracked undercarriages/undercarriage systems, it is 1 unit. We welcome sample orders and small-batch trial orders-these can be discussed on a case-by-case basis. We understand that you may wish to verify product quality before committing to a large-scale purchase.
Q: What is your lead time? What shipping methods do you support?
A:Lead times depend on the product type and order quantity: 10–25 days for standard products, and 30–50 days for customized products (depending on the level of complexity). We support various logistics options, including sea, air, and rail freight. We also offer a range of trade terms, such as FOB and CIF.
Q: How to Order?
A: To ensure that the steel-tracked undercarriage is a perfect fit for your equipment, please provide the following details:
1. Track type (rubber or steel):
2. Payload capacity of the undercarriage:
Note: This refers to the weight of the machine, excluding the weight of the undercarriage itself.
3. Length of the tracked undercarriage (mm):
4. Width of each track assembly (mm):
5. Height of the tracked undercarriage (mm):
6. Total width of the tracked undercarriage (mm):
7. Operating flow rate for each side (L/min):
8. Operating pressure (MPa):
9. Travel speed (km/h):
10. Gradeability (climbing ability):
Q: What payment terms can we accept?
A: Normally 30% deposit is required in advance, 70% balance shall be settled before shipment.
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