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Contacts：Jacky Zhang
Phone：+8618937103255
Email：hanyunpsq@gmail.com
Address：No. 167, Xuchang Road, Shangjie District, Zhengzhou City
Knowledge
Hydraulic Breaker Cylinder Material: 20CrMo vs 42CrMo? Service Life Depends on Process & Equipment｜Zhengzhou Hanyun SB/HB Series OEM Manufacturing
Release time：2026年2月25日
Many customers focus on hydraulic breaker cylinder material when selecting breakers or evaluating OEM factories: should it be 20CrMo or 42CrMo?
This is indeed critical, but judging cylinder quality only by material grade often overlooks the most important factor: stable manufacturing processes.
This is indeed critical, but judging cylinder quality only by material grade often overlooks the most important factor: stable manufacturing processes.
Under high-frequency impact, heavy load and strong vibration, the cylinder bears long-term alternating stress and pressure pulses.
Service life, consistency and failure rate are determined by the full manufacturing system — from material, machining and heat treatment to inspection.
In short: Material is the foundation; process is the result; equipment is the guarantee.
Service life, consistency and failure rate are determined by the full manufacturing system — from material, machining and heat treatment to inspection.
In short: Material is the foundation; process is the result; equipment is the guarantee.
Taking cylinder production as an example:
20CrMo and 42CrMo each have their application scope, but even premium material will cause problems with unstable heat treatment, uneven structure, or poor coaxiality, roundness and surface finish.
This directly leads to seal failure, accelerated scuffing, and even micro-cracks under extreme conditions.
20CrMo and 42CrMo each have their application scope, but even premium material will cause problems with unstable heat treatment, uneven structure, or poor coaxiality, roundness and surface finish.
This directly leads to seal failure, accelerated scuffing, and even micro-cracks under extreme conditions.
As a professional hydraulic breaker OEM/ODM manufacturer with full-industry-chain production,
Zhengzhou Hanyun invests in high-standard equipment and strict process control for critical cylinder production:
Zhengzhou Hanyun invests in high-standard equipment and strict process control for critical cylinder production:
GCr15 vs 42CrMo — Which Steel Is Better for Hydraulic Breaker Pistons
- Austrian Aichelin heat treatment furnaces for stable temperature and uniform performance
- Korean Doosan machining centers for high efficiency and repeatable precision
- Japanese CNC vertical grinders for superior roundness, coaxiality and surface quality
- Taiwanese deep-hole drilling machines to ensure straightness and finish
- -190°C cryogenic treatment equipment to optimize structure, stability, wear resistance and reliability
Advanced equipment ensures stable process execution, reduces batch differences, lowers rework rates and improves delivery control.
We also cooperate with material research institutes and suppliers to continuously optimize raw material performance, heat treatment windows, fatigue resistance and impact toughness.
This means our cylinders deliver better stability, longer service life and lower maintenance costs for customers.
This means our cylinders deliver better stability, longer service life and lower maintenance costs for customers.
HB20G Hydraulic Breaker Special Price Offer Zhengzhou Hanyun's Manufacturing Expertise Revealed
Our Product & OEM Service
We professionally manufacture Soosan SB series and Furukawa HB series hydraulic breakers and spare parts for global partners.
Our full-chain production includes:
Our full-chain production includes:
- Cylinder bodies (upper, middle, lower)
- Pistons, inner & outer bushings
- Flat pins, chisels, shells and more
We support complete breaker OEM and standalone component supply, helping customers shorten supply chains and reduce total costs.
If you are comparing 20CrMo vs 42CrMo for hydraulic breaker cylinders,
we suggest you also evaluate:
we suggest you also evaluate:
- Heat treatment equipment & process stability
- Hole machining capability (coaxiality, roundness, roughness)
- Deep-hole drilling precision
- Cryogenic treatment & material stability
- In-house inspection and quality traceability
A truly reliable cylinder is not about fancy material names —
it’s about stable processes, strong equipment and consistent batch quality proven in real working conditions.
it’s about stable processes, strong equipment and consistent batch quality proven in real working conditions.
#HydraulicBreakerCylinder #20CrMoVs42CrMo #HydraulicBreakerOEM #SoosanSBSeries #FurukawaHBSeries #ZhengzhouHanyun
