CAT E345D Excavator Stick Cylinder Middle Arm Cylinder Assembly 35MPa

Our CAT E345D hydraulic middle arm cylinder assembly is a complete CAT E345D stick cylinder and premium CAT excavator hydraulic cylinder. As a reliable excavator arm cylinder assembly, durable E345D boom cylinder, rugged heavy-duty hydraulic cylinder and standard CAT E345D cylinder assembly, this unit is purpose-engineered exclusively for CAT E345D large excavators. It is constructed with high-strength forged alloy steel for both cylinder barrel and piston rod, and fitted with imported multi-layer combined seals. The assembly delivers outstanding pressure resistance, reliable leakage-free performance and superior impact resistance, maintaining steady hydraulic power during frequent heavy-duty arm extension and retraction cycles. Manufactured fully to CAT OEM specifications, all overall dimensions, pin holes and hydraulic ports match original equipment precisely, enabling straightforward bolt-on installation with no modifications required. It effectively resolves common operational faults including oil leakage, sluggish arm movement and insufficient thrust. This component stabilizes overall hydraulic system performance, minimizes unplanned downtime and reduces long-term maintenance costs for CAT E345D excavators working in mining, quarrying, heavy construction and large-scale earthmoving projects.

• Complete Pre-Assembled Unit This integrated CAT E345D hydraulic middle arm cylinder assembly comes as a finished CAT E345D cylinder assembly, eliminating extra disassembly work and supporting fast one-piece replacement.
• 100% OEM Direct Fit This dedicated CAT E345D stick cylinder is built in accordance with original factory drawings. All mounting points and hydraulic ports align perfectly with OEM components for trouble-free installation.
• Heavy-Duty Reinforced Structure As a robust heavy-duty hydraulic cylinder, it adopts thickened alloy steel barrel and hard-chromed forged piston rod to withstand continuous high pressure and heavy impact loads.
• Premium Leak-Proof Sealing System High-performance multi-layer seals fully protect this CAT excavator hydraulic cylinder against oil leakage, dust and mud ingress in harsh mining and construction environments.
• Stable & Powerful Hydraulic Output This high-performance E345D boom cylinder ensures smooth arm operation and consistent driving force, preventing slow response and power drop under heavy loads.
• Long Lifespan for Heavy-Duty Use This versatile excavator arm cylinder assembly is optimized for heavy-load applications and delivers extended service life in mining, quarrying and large earthmoving operations.