BELPARTS MACHINERY LIMITED
| Condition | New |
| Emission standards | Stage V |
| Quality | Aftermarket High Quality |
| Part name | Hydraulic Arm Cylinder |
| Part number | 31Y1-19050 |
| Warranty | 1 Year |
| Delivery Time | 3-7 Day |
| Application | Excavator |
| Packaging Details | Wooden Case Packing |
| Supply Ability | 100 PCS / Months |
| Shipment | DHL FEDEX TNT EMS UPS / Ses / Air |
| Payment Terms | L/C,D/A,D/P,T/T,TRADE ASSURANCE,WEST UNION,PAYPAL |
| Model | R320LC-7 R320-7 |
| Model Number | R320LC-7 R320-7 |
| Place of Origin | China |
| Brand Name | Belparts |
| Certification | CE |
View Detail Information
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Product Specification
| Condition | New | Emission standards | Stage V |
| Quality | Aftermarket High Quality | Part name | Hydraulic Arm Cylinder |
| Part number | 31Y1-19050 | Warranty | 1 Year |
| Delivery Time | 3-7 Day | Application | Excavator |
| Packaging Details | Wooden Case Packing | Supply Ability | 100 PCS / Months |
| Shipment | DHL FEDEX TNT EMS UPS / Ses / Air | Payment Terms | L/C,D/A,D/P,T/T,TRADE ASSURANCE,WEST UNION,PAYPAL |
| Model | R320LC-7 R320-7 | Model Number | R320LC-7 R320-7 |
| Place of Origin | China | Brand Name | Belparts |
| Certification | CE | ||
| High Light | Hyundai excavator hydraulic cylinder ，R320LC-7 hydraulic arm cylinder ，aftermarket excavator spare parts | ||
Hyundai R320LC-7 Arm Hydraulic Cylinder | PN:31Y1-19050 | Premium Aftermarket Replacement
1. Basic Product Info
High-quality aftermarket stick/arm hydraulic cylinder, OEM part number 31Y1-19050, direct replacement for Hyundai ROBEX R320LC-7 / R320-7 32-ton crawler excavator. Controls arm stretching & retraction for heavy earthmoving, rock excavation, quarry and heavy construction jobs. Produced per original Hyundai drawing with identical pin spacing, mounting dimension and oil port layout for direct bolt-on installation without modification.
| Item | Details |
|---|---|
| Product Name | Hydraulic Arm/Stick Cylinder |
| Fit Model | Hyundai R320LC-7, R320-7 |
| OEM Part No. | 31Y1-19050 |
| Quality | Brand New Premium Aftermarket |
| Warranty | 12 months against manufacturing defects |
| MOQ | 1pc in stock for fast delivery |
| QC Standard | ISO9001 certified, full hydraulic pressure test before shipment |
2. Core Technical Specs
| Specification | Parameter |
|---|---|
| Bore Size | 150mm |
| Piston Rod Diameter | 110mm |
| Working Stroke | 1765mm |
| Rated Working Pressure | 34MPa |
| Factory Test Pressure | 51MPa (1.5×working pressure) |
| Barrel Tube | 25Mn seamless honed alloy steel, anti-deformation heat treatment |
| Piston Rod | 40Cr tempered steel + 28~32μm hard chrome plating, surface HRC67~70 wear-resistant |
| Complete Seal Kit | Import PU+NBR seals, high temp & anti-aging |
| Working Temp | -25℃ ~ +85℃ |
| Service Life | ≥8000 working hours under heavy load |
| Structure | Double lug with quenched copper wear bushing |
3. Product Advantages
4. Supplier Brief
We focus on Hyundai R-7 series excavator hydraulic cylinders over 12 years, full boom/arm/bucket cylinder range for R140LC-7, R320LC-7, R330LC-7, R370LC-7, products widely exported to Africa, Southeast Asia, Middle East construction spare parts market.
5. FAQ
Q1: Can this arm cylinder fit R320LC-5 model?
A: No, R320LC-5 uses different OEM part number with different mounting size, not interchangeable.
Q2: Can I buy matching seal kit separately?
A: Exclusive repair seal kit for 31Y1-19050 available separately with bundle discount, seals not pre-installed by default.
Q3: Anti-rust package for long sea transit?
A: Inner cylinder filled with anti-rust oil, piston rod coated anti-rust grease, wrapped waterproof PE film + solid export plywood case.
Q4: Discount for bulk order or full set (boom+arm+bucket cylinder)?
A: Tiered price discount for bulk purchase, combined shipment reduces total freight cost.
Q5: Warranty policy for oil leakage?
A: Provide clear leakage photos + excavator serial number, free replacement seal kit or remote installation guidance within warranty period.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2013
Total Annual:
$28000000-$41660000
Employee Number:
1200~1300
Ecer Certification：
Verified Supplier
Since 2013 Excavator Hydraulic Parts Manufacturer & Global Supplier Since 2013 Belparts Machinery Limited — Your Trusted Partner in Excavator Hydraulic Parts Who We Are Founded in September 2013 and headquartered in Guangzhou, China's premier engineering machinery hub, Belparts ha... Since 2013 Excavator Hydraulic Parts Manufacturer & Global Supplier Since 2013 Belparts Machinery Limited — Your Trusted Partner in Excavator Hydraulic Parts Who We Are Founded in September 2013 and headquartered in Guangzhou, China's premier engineering machinery hub, Belparts ha...
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