- Market vs. HMB hydraulic breaker: Critical Material Comparison
- front head/back head/cylinder
Market：20Crmo Forging, 40Cr, Cast Iron Parts
HMB:Forging 20CrMo
Effectively reduce the risk of cylinder pulling!
- piston:
Market40Cr、42Crmo、42Crnimo、GCr15
HMB:20Cr2Ni4
The 20Cr2Ni4 material ensures the piston corrosion resistance and high temperature resistance, which can be applied to the harsh working environment.
- Bushes/Piston Ring /front cover
Market:20CrMO、40Cr、42Cr、42Crmo
HMB:Forging 20CrMo
- seal kits
Market:NOK
HMB:YBS or WYS from korea
5.Chisel
Market:20CrMO、40Cr、42Cr、42Crmo
HMB:42CrMo
- HMB Hydraulic Breaker parts Hardness
HMB own heat treatment machine to do no less than 32 hours heat treatment time to make sure the carburized layer be between 1.8-2mm, this will reduce the expansion coefficient and reduce the occurrence of cylinder strain.
1.cylinder: 58-62 HRC, while the market hardness is 30-52 HRC.
Durability: The toughness of 20CrMo can reduce the formation of microcracks during high-frequency impacts (such as more than 1,200 times per minute).
- Piston /main valve:
Hardness: 58-62 HRC, while the market hardness is 30-50 HRC
- Chisel: The hardness is 48-52
- raw materials testing laboratory:
Each batch tests hardness and chemical composition.HMB have our own Material testing laboratory, in this laboratory, two parts will be checked:
The hydraulic breaker parts material component detection. All the material which are bought from China large state-owned steel factory should be detected here to make sure that all material components are qualified for HMB hydraulic breakers.
The breaker hardness detection. After heating treatment, HMB will check the carburized layer which should be between 1.8-2mm, the hardness should match the required data
- CNC deep hole drilling: ±0.02mm drilling accuracy, achieving the optimal hydraulic flow.
- Grinding and polishing: Surface finish ≤Ra0.4μm to prevent seal leakage.
- Piston: The alignment tolerance of the piston cylinder is within 0.05 millimeters.
- 100% size verification
- Certificate guarantee: CE, ISO 9001:2015
- Warranty: 12-month warranty to minimize downtime to the greatest extent
- Pre-delivery testing to verify the smooth operation of the machine.
- After-sales service: by videos/photos/ Whatsapp/email, and provide 24-hour real-time troubleshooting.
Facts proved that the HMB hydraulic breaker is durable and has outstanding performance, far exceeding its market counterparts. Whether it's breaking rock or demolish high-rise buildings, our hydraulic breakers can ensure that your project proceeds as planned!
Welcome to join us!
WhatsApp：+8613255531097
Post time: Apr-25-2025
