R210LC-9 R210-9 Hydraulic Arm Cylinder for Hyundai Excavator Spare Parts 31Y1

This robust stick hydraulic cylinder is engineered as a direct bolt-on aftermarket replacement exclusively for Hyundai R210-9 standard frame and long-track R210LC-9 medium crawler excavators, a mainstream 9-series machine widely applied in urban road renovation, residential foundation excavation, river silt dredging and small-to-medium quarry aggregate loading. Serving as the core hydraulic actuator controlling stick extension and retraction, it delivers steady, powerful digging breakout force to sustain long shifts of cyclic medium-heavy earthmoving work. It ranks as a fast-moving inventory spare for Hyundai authorized service garages, mid-scale excavation rental teams and cross-border spare parts exporters focusing on Hyundai 9-series mid-size digging equipment.

Every production link strictly adheres to Hyundai original OEM design blueprints and tight assembly tolerance benchmarks. Critical installation dimensions including connecting lug spacing, pin bore inner diameter, thick wear-resistant copper bushing sizes and hydraulic hose port layout fully match exclusive OEM part number 31Y1-28631. No secondary cutting, grinding or welding modification is required during replacement installation, effectively cutting mechanic labor expenses and eliminating costly construction site downtime triggered by sudden stick cylinder failure.

1. Dual Chassis Exclusive Dimensional Matching Only for Hyundai R210-9 & R210LC-9 9-Series Models
   Part No.31Y1-28631 is tailor-made stick cylinder dedicated solely to Hyundai R210-9 and long-track R210LC-9, incompatible with other Hyundai models such as R220-9, R215-9. All connection geometric parameters fully replicate genuine Hyundai 9-series medium-duty OEM components, seamlessly aligning with original stick linkages and factory hydraulic piping layout. It completely eliminates assembly offset issues that speed up seal aging and trigger persistent oil seepage when generic thin-wall cylinders are forcibly mounted on reinforced medium machine frames.
2. 9-Series Multi-Scenario Reinforced Shock-Resistant Structural Upgrade
   Low-cost universal thin-wall hydraulic cylinders lack targeted structural reinforcement and cannot adapt to frequent bump risks in crowded city construction zones and small quarries. This product upgrades cylinder barrel and cast lug wall thickness customized for the high-frequency medium-load working rhythm of Hyundai R210 series machines. It withstands long-term alternating digging loads and accidental debris impacts, with service life far exceeding ordinary universal aftermarket cylinders only suitable for simple landscaping work.
3. Two Separate Offline Pre-Delivery Quality Screenings to Eliminate Hidden Defect Risks
   Each finished stick cylinder undergoes two independent offline test workflows before exiting production workshops. The full-stroke reciprocating fatigue test simulates months of nonstop municipal foundation and river dredging earthmoving work to validate integral structural bearing rigidity; prolonged high-pressure soaking tightness inspection locates every tiny internal and external oil leakage blind spot. All defective finished goods are fully filtered out prior to warehousing to prevent expensive unplanned construction downtime for small and medium contractors.
4. Superior Cost Efficiency for Fleets Running Hyundai R210-9 Series Excavators
   Genuine Hyundai OEM spare parts for the R210LC-9 series carry steep retail prices plus lengthy international supply lead times. This aftermarket stick cylinder delivers identical structural load capacity, smooth low-vibration stable operation and complete service lifespan as authentic Hyundai factory components at an economical unit cost. It drastically reduces recurring long-term maintenance overhead for independent repair garages and small leasing enterprises managing fleets of Hyundai R210-9 excavators.
5. Flexible Global Logistics Covering Asia, Europe, Africa & Global Construction Markets
   All in-stock items can be dispatched within 3 working days upon payment confirmation. Air freight channels support emergency rush shipments for unexpected machine breakdowns at suburban residential and mountain quarry construction sites; consolidated bulk sea cargo and full FCL container transport provide budget-friendly wholesale delivery plans for machinery distributors supplying mixed construction markets across Southeast Asia, Africa, the Middle East and Latin America.

Our production facility owns over a decade of specialized R&D and mass production experience in hydraulic cylinders for Hyundai 9-series medium excavators, with flagship R210-9 / R210LC-9 as one of our mature core production lines. We operate a fully integrated closed-loop production workflow including heavy-duty precision forging, deep inner honing, integral heat treatment and automated thick chrome plating. Dedicated medium-load mixed urban & quarry site simulation test benches replicate real diversified working conditions to continuously optimize the product’s shock resistance and long-term wear durability. Our general construction-grade aftermarket hydraulic cylinder lineup is exported worldwide all year round, maintaining stable long-term cooperative partnerships and consistent positive customer feedback from global mid-size machinery spare parts distributors, relying on precise exclusive 9-series model matching and unified strict stable quality control standards.