Quanzhou Enrui Machinery Secures Partnership with Liebherr for Premium Mini Excavator Components Quanzhou Enrui Machinery Co., Ltd. ("Enrui"), a leading Chinese manufacturer of high-precision

2025-03-26

Quanzhou Enrui Machinery Secures Partnership with Liebherr for Premium Mini Excavator Components
Quanzhou Enrui Machinery Co., Ltd. ("Enrui"), a leading Chinese manufacturer of high-precision undercarriage systems for compact machinery, announced a landmark collaboration with German industrial giant Liebherr Group to supply critical components for its next-generation mini excavators. The partnership marks Enrui’s entry into the premium European market, leveraging its Quanzhou-based R&D capabilities to meet Liebherr’s stringent quality standards.

Technical Synergy: Enrui’s Components Power Liebherr’s 2-5 Ton Models

Enrui will provide undercarriage components (track links, sprockets, carrier rollers) and hydraulic quick couplers for Liebherr’s R 634 and R 926 mini excavator series, deployed in urban construction and renewable energy projects across Europe. These components feature:

High-strength alloy steel (yield strength ≥ 1,200 MPa) for 15% longer service life than standard parts;
Dual-layer anti-corrosion coating (zinc-nickel + polyurethane) passing 1,000-hour salt spray testing;
ISO 16750 certification for reliability in extreme temperatures (-40℃ to 50℃).

"Liebherr’s demand for precision aligns with our 5-axis CNC machining capabilities," said Enrui CTO Chen Wei, noting the company’s 0.05mm tolerance on sprocket teeth—a key requirement for Liebherr’s hydraulic drivetrain systems.

Validation Through Joint Testing

The partnership follows 18 months of rigorous validation:

Alpine Test Site (Austria): Enrui’s tracks withstood 2,500 hours of rocky terrain operation, outperforming competitors by 200 hours;
Arctic Circle Trials (Norway): Low-temperature grease developed with Liebherr engineers ensured smooth operation at -35℃;
EMC Compliance: Components met EU’s 严苛 ECE R10 standards for electromagnetic compatibility.

Localization Strategy: Leveraging Quanzhou’s Industrial Ecosystem

Enrui’s success hinges on Quanzhou’s "precision manufacturing cluster":

Supply Chain Proximity: 90% of raw materials sourced from 50km radius (Sansteel Minguang for steel, Xiamen Tungsten for carbide coatings);
Green Production: 15,000㎡ factory uses solar-powered heat treatment, reducing carbon footprint by 40% vs. traditional processes;
Talent Pool: Collaboration with Huaqiao University’s School of Mechanical Engineering to develop next-gen lightweight alloys.

Global Expansion: From Liebherr to Premium Aftermarket

The agreement opens doors to Liebherr’s global network:

Europe: Enrui components will be integrated at Liebherr’s Kirchdorf an der Iller plant (Germany);
APAC: Supporting Liebherr’s Singapore hub for Southeast Asian urban renewal projects;
Aftermarket Opportunities: Enrui will supply Liebherr’s dealer network with certified replacement parts, targeting Europe’s $4.2 billion mini excavator aftermarket.

About the Partnership

Liebherr Group: A €11.5 billion multinational, renowned for premium construction machinery and aerospace systems.
Enrui Machinery: ISO/TS 16949-certified, with 5 patents in undercarriage design, exporting to 45 countries.