Boom cylinder losing power slowly or showing visible oil seepage on your PC200-7 or PC200-8? A worn 14X-30-51531 boom cylinder rod seal or piston ring allows internal bypass that weakens boom lift force and progressively extends boom cycle time. RITO supplies this replacement boom cylinder to restore full lift force and clean, seal-tight boom operation on your Komatsu PC200-series.
Item NO.:
14X-30-51531Order(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In Stock14X-30-51531 Hydraulic Boom Cylinder for Komatsu PC200-6, PC200LC-6, PC200-7 and PC200-8 excavators. Heavy-duty double-acting cylinder with chrome-plated rod, precision-honed bore and layered seal assembly. Rod chrome thickness and honing quality determine seal life; RITO applies OEM-standard chrome and honing to ensure the new cylinder delivers the full seal service life expected on PC200-series work cycles.
| Part Number | 14X-30-51531 |
|---|---|
| Part Name | Hydraulic Boom Cylinder |
| Compatible Brand | Komatsu |
| Applicable Models | PC200-6, PC200LC-6, PC200-7, PC200-8 Excavator |
| Application | Main boom lift cylinder for Komatsu PC200-6 through PC200-8 excavators |
| Material | High-strength steel body, chrome-plated precision rod |
| Product Color | Yellow (Komatsu standard) or industrial finish |
| Working Temperature | -25°C~+80°C |
| Key Function | Provides hydraulic power for PC200-series boom raising and lowering under full work load |
| Condition | 100% New Aftermarket OEM Quality |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
Rod chrome layer thickness and adhesion tested to OEM specification, providing the surface hardness and corrosion resistance that determines boom cylinder seal service life on PC200-series.
Bore honed to OEM surface finish and dimensional tolerance for correct piston ring sealing and low internal bypass even at full PC200 working pressure.
14X-30-51531 covers PC200-6, PC200LC-6, PC200-7 and PC200-8 boom cylinder specification, addressing four Komatsu PC200 generations with one part number.
Multi-layer rod and piston seal assembly rated for PC200 maximum boom cylinder pressure, with buffer seals that protect the primary rod seal from pressure spikes during heavy lifts.
FAQ
Q: How do I diagnose internal bypass versus external leakage on the PC200-8 boom cylinder?
A: External leakage is visible as oil weeping from the rod seal or end cap. Internal bypass shows as slow boom drift when held stationary under load, or longer cycle time with no visible external oil. Confirm internal bypass by holding the boom at mid-stroke and watching for slow downward drift.
Q: Can I replace only the seal kit instead of the full 14X-30-51531 cylinder?
A: If the rod chrome is undamaged and the bore is within specification, a seal kit is the more economical repair. Replace the full cylinder if the rod shows pitting, score marks or chrome delamination that prevents new seals from sealing.
Q: What is the correct procedure for bleeding the PC200 boom cylinder after fitting 14X-30-51531?
A: Cycle the boom slowly through full extension and retraction five times at low engine speed before applying full load. This purges air from the cylinder and ensures the seal assembly seats correctly before high-pressure operation.
Q: How to confirm 14X-30-51531 is the correct boom cylinder for my PC200-8?
A: Match the existing boom cylinder part number 14X-30-51531 and confirm machine model is PC200-6, PC200-7 or PC200-8. Provide machine serial number for cross-reference.
Q: What quality options are available?
A: We provide original, OEM and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
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