Order the Cat® 349-4134 Complete Hydraulic Cylinder Assembly for 320D and 323D series excavators. Featuring high-strength alloy steel, thick-wall barrels, and exclusive oversized seals for maximum durability and leak protection. Direct-fit replacement to minimize downtime and restore hydraulic power. Global export pricing available.
The 349‑4134 Hydraulic Cylinder Assembly is a heavy‑duty integrated hydraulic component for Caterpillar 20‑ton‑class excavators. It provides powerful hydraulic driving force for bucket excavation, boom lifting and stick movement. With high‑strength barrel structure and oversized sealing system, it maintains stable output and long service life under high‑pressure working conditions.
| Technical Parameter | Specification Details |
|---|---|
| Part Number | 349‑4134 (3494134) |
| Product Type | Hydraulic Cylinder Group / Barrel & Piston Rod Assembly |
| Main Material | High‑Tensile Forged Alloy Steel |
| Sealing System | Heavy‑Duty Oversized High‑Pressure Seals |
| Structure | Pre‑Assembled Integrated Barrel‑Rod Unit |
| Core Function | Hydraulic Power Output & Excavator Working‑Device Actuation |
This hydraulic cylinder is specially designed for CAT mainstream D‑series medium excavators:
320D Series: 320D, 320D L, 320D GC, 320D2, 320D2 L, 320D2 GC, 320D LN, 320D LRR, 320D RR, 320D FM
323D Series: 323D, 323D L, 323D LN, 323D2 L, 323D SA
321D/324D Series: 321D LCR, 324D, 324D L
Thick‑Wall High‑Strength Barrel: Extra‑thick cylinder barrel resists high‑pressure impact and external rock collision damage, greatly improving service life in mining and harsh construction sites.
Enhanced Oversized Seals: Special heavy‑duty sealing structure reduces internal hydraulic oil leakage and external oil seepage, adapting to high‑temperature and abrasive‑dust working environments.
Plug‑and‑Play Integrated Assembly: Complete pre‑assembled cylinder unit enables direct replacement without disassembly processing, shortening machine downtime for maintenance.
Stable Precision Output: High‑tensile piston rod ensures smooth reciprocating movement, providing stable and precise hydraulic power for excavation, lifting and grading operations.
For bulk wholesale, technical consultation and hydraulic‑cylinder component solutions:
Xuzhou Sinoswift Import & Export Co., Ltd.
Contact: +86 13701956981
Email: [email protected]