SPARKLING JRC0007 Replacement – Durable Excavator Part

Heavy-Duty Swing Gearbox Reducer for Hitachi JS Excavators
Engineered for JS200, JS210, JS220, JS220LR, and JS235 excavators, the Swing Gearbox Reducer (JRC0007) is the precision heart of your machine’s rotation system. This OEM-compatible reducer delivers unmatched torque transmission and smooth 360° slewing motion under extreme loads. Forged with hardened helical gears and triple-sealed bearings, it resists wear, minimizes backlash, and withstands relentless job site vibrations. SPARKLING MACHINERY’s JRC0007 undergoes rigorous cycle testing to ensure perfect meshing alignment and extended service life – because precise rotation isn’t a luxury, it’s the core of your excavator’s productivity.

   SPARKLING MACHINERY NEW PC27MR PC30MR PC35MR PC45MR PC490 PC55MR 708-3S-14290/708-3S-14250 Piston Subassembly is a dedicated, high-performance hydraulic component exclusively engineered for KOMATSU PC27MR, PC30MR, PC35MR, PC45MR, PC490, and PC55MR crawler excavators—covering mini to heavy-duty models widely used in urban construction, landscaping, mining, and large-scale infrastructure projects. As a core part of the excavator’s hydraulic cylinder system, it converts hydraulic pressure into linear motion to drive key mechanisms (boom, arm, bucket), ensuring powerful and smooth operation during tasks like trench digging, rock breaking, and material loading. This function is vital for maintaining sufficient digging force, optimizing operational efficiency, and avoiding unplanned downtime caused by cylinder performance failures.

   Engineered to meet KOMATSU’s original equipment (OEM) standards and compatible with part numbers 708-3S-14290 and 708-3S-14250, the Piston Subassembly withstands harsh working conditions: high hydraulic pressure (up to 36 MPa), extreme temperature fluctuations (-25°C to 105°C), and continuous vibration from heavy-duty use. It resists oil contamination and mechanical wear, providing long-lasting power transmission reliability for the six KOMATSU excavator models. Backed by strict performance verification, it guarantees seamless compatibility and safe operation for daily tasks.

   SPARKLING MACHINERY NEW 440211-01543 DX490LC-7M (OEM) Radiator is an exclusive OEM-standard cooling core component designed specifically for DX490LC-7M large excavators—commonly used in heavy mining, large-scale construction, and infrastructure projects. As the core of the excavator’s engine cooling system, it efficiently dissipates excess heat generated by the high-power engine during prolonged heavy-load operations (such as rock breaking, bulk material loading, and deep excavation) by transferring heat from coolant to ambient air. This function is critical for maintaining the engine’s optimal operating temperature (85–95°C), preventing overheating-induced power loss, cylinder head warping, or irreversible engine damage, while ensuring consistent productivity in demanding work environments.

   Engineered to meet 100% OEM specifications, it maintains superior heat dissipation efficiency even under harsh conditions—including high ambient temperatures (up to 50°C), continuous excavator vibration, and exposure to dust, gravel, or heavy rain. It resists coolant leakage and core corrosion, avoiding cooling system failures that lead to costly unplanned downtime. Backed by strict OEM-level performance verification, it guarantees reliable heat management to support uninterrupted operation of DX490LC-7M excavators.

   SPARKLING MACHINERY NEW EC120D EC135B EC140B EC140C EC140D 14509331 Expansion Valve is a dedicated thermal control component for VOLVO EC120D, EC135B, EC140B, EC140C, and EC140D crawler excavators (mid-sized equipment for construction, municipal engineering, and landscaping). As a key part of the excavator’s air conditioning system, it precisely regulates refrigerant flow to maintain stable cabin temperature, ensuring operator comfort during long-hour tasks in hot or cold environments.

   Meeting VOLVO OEM standards (part no. 14509331), it endures -30°C to 80°C temperature fluctuations, resists refrigerant corrosion and mechanical wear, and ensures consistent thermal control for the five VOLVO models. Strict performance testing guarantees seamless compatibility and reliable operation.