PC308USLC-3E0 PC308US-3E0 Hydraulic Boom Cylinder for Komatsu Excavator Spare Parts 707-01-0H930 Aftermarket High Quality
High-grade aftermarket boom cylinder OEM No.707-01-0H930, direct replacement for Komatsu PC308US-3E0 & PC308USLC-3E0 short tail swing excavator, controls boom lifting/lowering for tight-space construction, urban trenching and narrow-site loading work. Fully produced per original OEM blueprint with identical mounting hole spacing, pin dimension and oil port layout for direct bolt-on installation without machining modification.
| Item | Spec |
|---|---|
| Product Name | Hydraulic Boom Cylinder |
| Fit Machine | PC308US-3E0, PC308USLC-3E0 |
| OEM Part No. | 707-01-0H930 |
| Product Grade | Brand New Premium Aftermarket |
| Warranty | 12 months against manufacturing defects |
| MOQ | 1 unit available from stock |
| Certification | ISO9001 QC certified |

| Parameter | Standard Data |
|---|---|
| Bore Diameter | 140mm |
| Piston Rod Diameter | 100mm |
| Rated Working Pressure | 31.4MPa |
| Factory Hydraulic Test Pressure | 47.1MPa(1.5×working pressure) |
| Barrel Material | ST52 seamless alloy steel, precision inner honing |
| Piston Rod | Medium carbon steel with 28~35μm hard chrome plating, HRC68-70 anti-wear |
| Seal Set | Imported composite PU+NBR seals, high temp & anti-aging |
| Working Temperature | -25℃~+85℃ |
| Design Service Life | ≥8000 working hours |
| Mounting Type | Double lug with quenched wear-resistant copper bushings |
- Full OEM interchange: Same overall size as original 707-01-0H930, compatible with serial No.30001-up PC308USLC-3E0 machines, plug and play.
- Compact heavy-duty design: Specially optimized for short-radius US-series excavator narrow working condition, anti-bending under frequent bump and heavy digging load.
- Strict full inspection: Every finished cylinder passes air tightness and full-pressure leakage test before warehouse delivery to eliminate inner & outer oil leak risk.
- Cost-effective choice: Same working performance as genuine Komatsu spare part while saving 40%~55% purchase cost versus OEM original parts.
- Flexible delivery: In-stock items ship within 3 working days; air freight 3-7 days, sea shipment 30~38 days optional.
Our factory specializes in aftermarket Komatsu US short-tail excavator hydraulic cylinders for over 12 years, complete boom/arm/bucket cylinder range for PC308US-3E0 series, goods widely exported to Africa, Southeast Asia, Middle East construction spare parts wholesalers.
Q1: Can this boom cylinder install on regular long-track PC300LC-3 model?
A: Not available. 707-01-0H930 is exclusive for short-swing PC308US-3E0 series; boom installation distance and overall length differ greatly from standard PC300LC-3.
Q2: Does this cylinder come with matching original-spec seal kit?
A: Pre-installed full set seals inside cylinder; matched spare repair seal kit PN:707-99-59320 can be supplied separately at discounted price.
Q3: How do you protect cylinder against rust during long sea transportation?
A: Inner cavity anti-rust oil filling + whole cylinder anti-rust grease coating + waterproof plastic wrap + thick solid plywood case packaging.
Q4: What’s your solution if oil leakage appears within warranty period?
A: Send clear photos of leakage position and machine serial number, we arrange free replacement seal set or technical guidance accordingly.
Q5: Can I mix order boom + arm + bucket cylinder together for combined discount?
A: Yes, combined bulk order of three sets cylinders gets extra preferential unit price and unified one-time shipping cost saving.
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