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Hyundai R320LC-7 / R320-7 Hydraulic Bucket Cylinder | PN:61N9-40010 / 31Y1-19060 | Premium Aftermarket Replacement
1. Basic Product Info
High-quality aftermarket bucket hydraulic cylinder dual OEM codes 61N9-40010 & 31Y1-19060, direct replacement for Hyundai R320-7, R320LC-7 large crawler excavator. It controls bucket opening/closing for quarry rock digging, heavy gravel loading and bulk earthmoving projects. Produced strictly following original Hyundai factory blueprint, identical mounting dimension, pin hole spacing and oil port layout for plug-and-play installation without field machining.
| Item | Details |
|---|
| Product Name | Bucket Hydraulic Cylinder |
| Fit Excavator | Hyundai R320-7, R320LC-7 |
| Dual OEM No. | 61N9-40010, 31Y1-19060 |
| Grade | Brand New Premium Aftermarket |
| Warranty | 12 months against factory defects |
| MOQ | 1 unit in stock available |
| Certification | ISO9001 QC Certified |
2. Core Technical Data
| Spec | Parameter |
|---|
| Bore Size | 150mm |
| Piston Rod Dia. | 102mm |
| Rated Working Pressure | 34.3MPa |
| Factory Hydraulic Test Pressure | 51.45MPa (1.5×working pressure) |
| Barrel Material | ST52 seamless alloy steel, precision inner honing |
| Piston Rod | Medium carbon steel + 30μm hard chrome plating, HRC68-70 anti-impact |
| Standard Seal | Import PU+NBR composite seals, anti-aging & wear-resistant |
| Operating Temp | -25℃ ~ +85℃ |
| Design Service Life | ≥8200 working hours under heavy-duty operation |
| Structure | Double ear lug with quenched copper wear bushings |
3. Product Advantages
- Dual OEM Number Compatibility: Two official part numbers cover original replacement demand for R320LC-7 full serial machines, fully interchangeable with genuine Hyundai spare parts.
- Heavy-load Reinforced Structure: Thickened cylinder barrel and strengthened lug base adapt frequent rock collision in quarry works, effectively avoid rod bending and housing crack.
- 100% Pre-delivery Pressure Test: Every finished cylinder completes full-pressure leakage & reciprocating cycle test before warehousing to eliminate inner/outer oil leakage risk.
- Cost-effective Option: Same working performance as original Hyundai cylinder while cutting 40%~50% procurement cost for repair dealers.
- Flexible Shipment: In-stock items ship within 3 working days; air freight 3–7 days, sea shipment 32–40 days optional.
4. Supplier Brief
We specialize in aftermarket Hyundai -7 series excavator hydraulic cylinders over 12 years, full boom/arm/bucket cylinder lineup for R210, R290, R320, R335LC-7 models, goods widely exported to Africa, Southeast Asia, Middle East spare parts wholesalers.
5. Exclusive Differentiated FAQ
Q1: Can this bucket cylinder fit updated R320LC-7A version?
A: Yes, 61N9-40010/31Y1-19060 fits both standard R320LC-7 and upgraded R320LC-7A models with consistent installation size.
Q2: Do you supply matching repair seal kit for this cylinder?
A: Matching seal kit PN:31Y1-19090 is separately available at discounted price, not pre-installed inside cylinder by default.
Q3: What packaging do you use to prevent rust during long ocean transit?
A: Inner cavity filled with anti-rust oil + whole cylinder coated anti-rust grease + waterproof PE wrap + solid thick plywood case packaging.
Q4: Can I combine boom+arm+bucket cylinder in one order for bulk discount?
A: Mixed order of three sets gets favorable unit price and unified one-time freight to save logistics cost.
Q5: How to claim warranty if oil leaking occurs within warranty period?
A: Provide clear leakage photos + machine serial number, we send free replacement seal set or offer remote technical troubleshooting accordingly.
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