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

Product Details
These undercarriage components offer flexible customization, allowing for adjustments to key parameters such as total track length, ground contact width, track shoe thickness, track gauge, and drive mechanisms. They are compatible with various control systems-including hydraulic, intelligent electronic, and remote control-meeting the needs of smart equipment upgrades. A modular assembly design enables rapid installation without modifying the main machine structure, ensuring high efficiency and excellent versatility. The components excel in complex operating conditions-such as muddy sites, underground tunnels, sandy terrain, and uneven farmland-offering stable traction, robust load-bearing capacity, and superior off-road mobility. They serve as premium components for construction machinery manufacturers, equipment integrators, and trading companies.
Our Core Strengths
Backed by a dedicated engineering team and extensive experience in heavy-duty undercarriage manufacturing, we specialize in developing reliable solutions for demanding applications.
Our team works closely with customers to design undercarriage systems that match the actual working conditions of tunneling machines, drilling equipment, crushers, and other heavy-duty machinery. From load capacity requirements to hydraulic travel system configurations, each solution is customized to achieve better performance and adaptability than standard off-the-shelf components.
With years of experience in the heavy equipment manufacturing industry, we have developed proven production capabilities for engineering machinery, drilling rigs, and specialized tracked vehicles. Our expertise allows us to provide practical and efficient solutions for a wide range of applications and operating environments.
The entire production process is supported by advanced CNC precision machining equipment and a strict quality management system with full traceability. Every stage, from component processing to final inspection, is carefully controlled to maintain stable accuracy and consistent performance throughout batch production.
Whether for domestic projects or international markets, we are capable of handling large-volume orders while maintaining dependable quality standards and on-time delivery.

Customized Design Solutions
We offer one-on-one customization of complete Undercarriage for Excavator solutions based on client specifications, including equipment dimensions, operating environments, load capacity, track width, and drive systems. We support OEM and ODM services, helping clients shorten R&D cycles while enhancing the operational stability and market competitiveness of their machinery.

Durable Steel Structure
Constructed from thickened, high-strength alloy steel plates formed via integrated forging and pressing, these components offer exceptional wear, impact, and deformation resistance, capable of withstanding long-term, high-frequency, full-load heavy-duty operations. The frame structure is optimized to handle the specific stresses of excavator operations-including off-center loads and dynamic impacts-ensuring minimal vibration and smooth operation even under full load. The robust high-strength steel structure minimizes component wear, reduces the frequency of maintenance-related downtime, lowers long-term operating costs, and significantly extends the overall service life of the machine.

Technical Specifications (Undercarriage for Excavator Assembly Solutions)
Retractable whole undercarriage




| CODE NAME | A | B | C | D | E | F | G | H | I | J | K | APPLICATION |
| MEFX300 | 3442 | 4247 | 418 | 943 | 978 | 1080 | 372 | 600 | 1340/2340 | 2000/3000 | 2998/3998 | 30Ton Rotary Drilling Rig |
| MEFX380 | 3706 | 4494 | 405 | 850 | 885 | 977 | 348 | 600 | 1311/2311 | 2000/3000 | 3170/4170 | 38Ton Rotary Drilling Rig |
| MEFX400 | 3442 | 4247 | 418 | 943 | 985 | 1094 | 372 | 700 | 1340/2340 | 2000/3000 | 2998/3998 | 40Ton Rotary Drilling Rig |
| MEFX600 | 4144 | 5069 | 473 | 969 | 885 | 996 | 421 | 700 | 1536/2436 | 2400/3300 | 3552/4452 | 60Ton Rotary Drilling Rig |
| MEFX820 | 4671 | 5584 | 478 | 1099 | 1105 | 1219 | 420 | 800 | 1424/2724 | 2350/3650 | 3576/4876 | 82Ton Rotary Drilling Rig |
| MEFX900 | 4852 | 5812 | 486 | 1123 | 1136 | 1286 | 460 | 800 | 1600/2680 | 2510/3590 | 3812/4892 | 90Ton Rotary Drilling Rig |
| MEFX1000 | 5174 | 6140 | 496 | 1145 | 1212 | 1347 | 450 | 800 | 1790/3090 | 2700/4000 | 3969/5269 | 100Ton Rotary Drilling Rig |
| MEFX1000A | 5176 | 6145 | 495 | 1142 | 1257 | 1398 | 445 | 800 | 1094/2394 | 2200/3500 | 3000/4300 | 100Ton Rotary Drilling Rig |
| MEFX1200 | 5582 | 6562 | 486 | 1155 | 1140 | 1296 | 460 | 800 | 1685/3045 | 2720/4080 | 3989/5349 | 120Ton Rotary Drilling Rig |
View More Technical Parameters
Chassis Components
This style includes a strengthened undercarriage frame for improved reliability. It is suitable for heavy-duty drilling tasks and frequent operation.

Factory Production Line
Components are manufactured using laser cutting and CNC precision bending, ensuring tight dimensional tolerances and uniform shapes. Robotic welding processes create even, robust seams, minimizing thermal deformation and ensuring structural integrity. Critical mounting surfaces and locating holes undergo precision machining on gantry centers to meet rigorous assembly standards. Parts undergo shot-blasting for rust removal, followed by automated coating and high-temperature curing, resulting in exceptional corrosion and rust resistance. Final assembly follows standardized procedures; bolts are secured with thread-locking compound and tightened to precise torque specifications, preventing loosening during long-term operation and ensuring reliable, stable performance.

Factory Scene



Established in 2022, Moerfei Engineering Machinery (Shandong) Co., Ltd. is a leading construction machinery manufacturer in China, integrating research and development, production, sales, and service. With 10 years of experience, it is renowned for its technical strength, quality system, and global service. Its headquarters is located in Jining City, Shandong Province, China.
Undercarriage for Excavator Loading & Shipment
Our heavy-duty tracked chassis are fully manufactured and carefully loaded for delivery.
All products undergo strict quality inspection before shipment, securely wrapped to avoid damage during transit.
Custom steel tracked undercarriages are widely applied to drilling rigs, engineering machinery and special off-road equipment.
We support customized dimensions, load capacity and drive solutions, arranging timely delivery for global clients.

The Customer's Evaluation Of Us
Each cooperative customer is equipped with an exclusive after-sales manager, responsible for daily service docking, demand follow-up and problem handling to ensure one-to-one intimate service.

Exhibition


FAQ
Q: What is the minimum order quantity (MOQ)? Is stock available? What is the lead time?
A: The MOQ is one unit, and we support single-unit customization. Standard in-stock items ship within 7–10 days; non-standard custom orders take 15–25 days. Delivery times for large-volume orders can be negotiated.
Q: Can the undercarriage width and total length be modified according to requirements?
A: Dimensions (length/width), track gauge, ground clearance, and mounting flanges can all be customized to non-standard specifications. Upon contract signing, we provide complimentary 2D, 3D, and assembly drawings to facilitate rapid installation and integration for the customer.
Q: Do you support customization of steel undercarriages with different tonnage capacities?
A: We support OEM/ODM customization across the full 3–200 ton range, suitable for heavy machinery such as exploration drill rigs, muck loaders, rotary drilling rigs, and compact excavators.
Q: What is the warranty period for the complete unit?
A: The complete unit comes with a standard one-year warranty. We maintain steady stock of wear parts-such as track chains, drive sprockets, idlers, and track rollers-to ensure reliable supply.
Q: What packaging is used for shipping? How are sea or land freight costs calculated?
A: Units are finished with anti-rust paint and secured with steel or wooden framing to prevent damage from bumps or impacts during transit. We offer trade terms such as FOB, CIF, and DDP, and can accurately calculate sea or land freight costs based on the shipping origin and transport method.
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