-
Reduced internal stress design: The H55E piston assembly operates inside a suspension-buffered power cell that helps absorb recoil and vibration. This protects both the piston and the carrier machine from shock loading.
-
Optimized Ring Grooves: Hardened ring grooves for the top compression ring to resist wear and micro-welding, crucial for long ring seal life and preventing blow-by..
-
Simplified serviceability: The E-Series redesign reduced internal part count by roughly 47% versus older D-Series models, making piston-area maintenance and teardown faster.
| Model | CAT H55E |
|---|---|
| Type | Hydraulic Hammer Spare Parts |
| Application | CAT H55E Hydraulic Rock Breaker |
| Part Name | CAT H55E Piston |
| Position | Hydraulic Cylinder System |
| Material | Crmo20 Crmo42 Crmo40 |
| Brand | HUILIAN, or as required |
| Package Details | Carton, Wooden Box, Plastic Bag, Neutral Packing, PP Bag, or as Required |
| Shipment | Air, Sea, Express Mail, etc. |
| Payment | T/T, Western Union, PayPal, L/C at sight, Alipay etc |

- Competitive export pricing: Guangzhou-based manufacturing and supply-chain access can provide cost advantages compared with many domestic dealer-only replacement parts.
- Excellent Wear Resistance and Long Service Life: Designed to resist abrasion, impact and fatigue, our pistons feature optimised surface hardness and a smooth finish. This significantly reduces wear between the piston and cylinder, extending service life and lowering maintenance and replacement costs.
- Carefully Selected Materials with Rich Manufacturing Experience: We provide a complete series of pistons for a wide range of hydraulic breaker brands and models. Our extensive product database enables us to ensure precise matching to your specific model for a perfect fit and optimal performance.
- Full Range Supply with Precise Model Matching: We provide a complete series of pistons for a wide range of hydraulic breaker brands and models. Our extensive product database enables us to ensure precise matching to your specific model for a perfect fit and optimal performance.
-
Specialized hydraulic breaker expertise: Focused on excavator hydraulic parts and breaker components, including pistons, seal kits, chisels, cylinders, diaphragms, and repair parts for CAT, Komatsu, Furukawa, Soosan, Montabert, and other major brands.

Accepted Payment Type: T/T, L/C, D/P D/A, Credit Card, PayPal, Western Union, Cash, Escrow
18 - 21 Tons Excavator Breaker Hammer Hydraulic With 135mm Chisel Soosan SB70
Heavy Duty 30 - 40 Ton Excavator Ripper Attachment With High Strength Tooth
Durable HL04DL Excavator Hydraulic Quick Coupler With Hydraulic Locking System