42CrMoA Forged Alloy Steel Precision Honed Hydraulic Breaker Piston for Soosan SB81 SB121 Rock Hammer
42CrMoA Forged Alloy Steel Hydraulic Breaker Piston for Soosan SB81/SB121
This high-performance hydraulic breaker piston is precision-manufactured from 42CrMoA forged alloy steel, engineered as a direct replacement for Soosan SB81 and SB121 series rock breakers. The piston is the core power component of any hydraulic hammer, and its quality directly determines impact performance and service life.
Material & Heat Treatment
| Material | 42CrMoA Forged Alloy Steel |
| Heat Treatment | Integral Quenching + Tempering |
| Surface Hardness | HRC 55-60 |
| Core Hardness | HRC 38-42 |
| Machining | Precision Honed + Ground |
| Compatible Models | Soosan SB81, SB121 |
| Delivery Time | 1-12 Working Days |
Superior Manufacturing Process
Each piston undergoes a strict manufacturing process: forging → rough machining → quenching and tempering → precision turning → honing → chrome plating → final inspection. The advanced heat treatment creates a hard wear-resistant surface while maintaining a tough impact-resistant core, preventing premature fatigue failure.
Exact Fit Guarantee
Manufactured to OEM dimensional specifications with tight tolerances for seamless installation. Compatible with Soosan SB81 and SB121 hydraulic breaker models. Each piston is individually inspected for dimensional accuracy and surface finish quality.
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