Yantai Dopro Industry Technology Co., Ltd.
| Payment Terms | T/T, L/C, PayPal, Western Union |
| Supply Ability | 2,000 Pieces per Month |
| Delivery Time | 1-12 working days |
| Packaging Details | Carton box with anti-rust paper and foam insert, export-grade wooden case |
| Material | 42CrMoA Forged Alloy Steel |
| Heat Treatment | Integral Quenching + Tempering |
| Surface Hardness | HRC 55-60 |
| Machining | Precision Honed + Ground |
| Compatible Models | Soosan SB81, SB121 |
| Position | Hydraulic Cylinder System |
| Brand Name | HUILIAN |
| Model Number | SB81-PT |
| Place of Origin | Guangdong, China |
| Certification | ISO 9001:2015 |
View Detail Information
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Product Specification
| Payment Terms | T/T, L/C, PayPal, Western Union | Supply Ability | 2,000 Pieces per Month |
| Delivery Time | 1-12 working days | Packaging Details | Carton box with anti-rust paper and foam insert, export-grade wooden case |
| Material | 42CrMoA Forged Alloy Steel | Heat Treatment | Integral Quenching + Tempering |
| Surface Hardness | HRC 55-60 | Machining | Precision Honed + Ground |
| Compatible Models | Soosan SB81, SB121 | Position | Hydraulic Cylinder System |
| Brand Name | HUILIAN | Model Number | SB81-PT |
| Place of Origin | Guangdong, China | Certification | ISO 9001:2015 |
| High Light | 42CrMoA Breaker Piston ，Forged Alloy Steel Piston ，Soosan SB81 Hammer Piston | ||
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 | 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 |
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.
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.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2010
Total Annual:
10000000-50000000
Employee Number:
080~100
Ecer Certification：
Active Member
DOPRO is a professional manufacturer of Hydraulic Breaker for more than 15 years, we are leading manufacturer in china domestic market for breaker spare part and whole breaker production ,meanwhile we get more production line for excavator attachments . Until now ,we get three factory and one expo... DOPRO is a professional manufacturer of Hydraulic Breaker for more than 15 years, we are leading manufacturer in china domestic market for breaker spare part and whole breaker production ,meanwhile we get more production line for excavator attachments . Until now ,we get three factory and one expo...
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