Prouduct Description
Hydraulic Boom Cylinder for Doosan S470-5 Excavator
Part Number:400309-00640 400309-00641 44000318 40030900640 40030900641
| Part Name |
Boom Hydraulic Cylinder |
Apply for | for Doosan S470-5 S470lc-5 Excavator |
| Model | S470-5 S470lc-5 | Warranty | 1 Year |
| Part Number | 400309-00640 400309-00641 44000318 40030900640 40030900641 | OEM | YES |
| Tube Material | 25 Mn Steel | Seal | NOK and SKF |
Company Profile
With over 16 years of expertise in the excavator parts industry, GLPARTS specializes in manufacturing hydraulic cylinders (arm, boom, bucket) and supplying a full range of excavator components, including hydraulic pumps, control valves, gear pumps, motors, diesel engines, solenoid valves, oil seals, and hydraulic cylinder tools.
We serve clients in more than 100 countries, such as the United States, Australia, Indonesia, and Brazil, earning a strong reputation for reliability and consistent quality. From raw material selection to final testing, we enforce strict quality control to ensure outstanding durability and performance.
Backed by a skilled team and fast delivery capabilities, GLPARTS is committed to providing not just parts, but complete solutions — built to perform, made to last.
Partner Brand
We supply a wide range of excavator parts compatible with major brands including Doosan, Komatsu, Caterpillar, Hyundai, Kobelco, Hitachi, Sumitomo, Volvo, Liugong, and XCMG. Whether for maintenance, replacement, or system upgrades, our parts ensure reliable fit, performance, and durability across various models and applications.
Why Choose US
| Feature | Description |
| Precision Manufacturing | Advanced CNC machining for tight tolerances and smooth cylinder operation |
| Superior Material Selection | Cylinder tubes of high-grade 25Mn steel, hardened alloy steel rods for wear resistance |
| Enhanced Surface Treatment | Rods with high-frequency quenching and hard chrome plating for corrosion resistance and durability |
| Leak-Proof Sealing | Imported NOK/SKF seals, leakage rate < 1% |
| Automated Welding Technology | Fully automatic welding for uniform, high-strength welds, better than manual work |
| 100% Quality Inspection | Each unit tested for pressure, performance, and finish before shipment |
More Cylinders We Can Provide
| Part Number | Description | Model |
| 400305-00465 | Excavator Arm Cylinder | DX225, DX255LC-5 |
| K1011027, K1011028, K1011044 | Excavator Bucket Arm Boom Cylinder | DX255LC |
| 2440-9238G, 2440-9239G | Excavator Boom Cylinder | DH300L-V |
| K1001340A | Excavator Boom Cylinder | DX520LC, DX480LC |
| 440-00016E, (440-00016) | Excavator Bucket Cylinder | DX500LC-V SOLAR, DX470LC-V |
| 400305-00029B | Excavator Arm Cylinder | DX350, DX350LC-3 |
| K1006192, K1006202, K1006919, K1006920 | Excavator Bucket Arm Boom Cylinder | DX340 |
| 440-00016A, (440-00016) | Excavator Bucket Arm Boom Cylinder | DX500LC-V SOLAR, DX470LC-V, DX450LC-V |
| K1001341, K1001340, K1001344 | Excavator Bucket Arm Boom Cylinder | DX480LC, DX520LC |
| 440-00411C, 440-00411B, 440-00411A, 400310-00388 | Excavator Bucket Arm Boom Cylinder | DX140, DX160 |
