33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
This heavy-duty accumulator piston cup and diaphragm assembly is specially customized for Etc. K80 and OKB3600 large hydraulic rock breakers, widely matched on 35–63 ton heavy excavators, mining and demolition machinery. It is the core energy storage sealing component of the breaker nitrogen accumulator, integrating integrated piston cup and diaphragm integrated molding structure.
Adopted imported modified HNBR and reinforced high-toughness fluororubber composite materials, it boasts outstanding oil resistance, high pressure fatigue resistance, tear resistance and wide temperature adaptability. It perfectly replaces original OEM diaphragm & piston cup, solves common failures such as nitrogen leakage, insufficient impact force, rapid pressure attenuation and diaphragm rupture, and greatly extends continuous working life of heavy breakers under long-term high-frequency heavy load impact conditions.
Item |
Detailed Parameter |
Product Name |
Etc. K80 OKB3600 Breaker Piston Cup & Diaphragm Assembly |
Applicable Model |
Etc. K80, OKB3600 Heavy Hydraulic Rock Breaker |
Compatible Series |
OKTEC OKB Series Large Breaking Hammer, Etc K Series Medium-Large Breaker |
Main Material |
Imported Modified HNBR + Reinforced FKM Fluororubber Composite |
Max Working Pressure |
18MPa |
Working Temperature |
-30°C ~ 130°C |
Kit Contents |
Integrated accumulator piston cup, main diaphragm, auxiliary sealing gaskets, positioning backup rings |
Cross Reference OEM No. |
OKB3600-DIA, K80-ACC-MEM, 3061297881 |
Net Weight |
Approximately 1.2kg |
Applicable System |
Breaker nitrogen accumulator energy storage sealing system |
Warranty |
12 Months |
Precision one-step molding consistent with original drawing size, fully compatible with Etc K80 and OKB3600 hydraulic breakers. Matches OEM part numbers OKB3600-DIA, K80-ACC-MEM and 3061297881, no cutting, padding or modification required for direct on-site replacement installation.
Core piston cup and diaphragm adopt high-performance HNBR-FKM composite rubber with fiber reinforcement layer inside. Ultra-strong hydraulic oil corrosion resistance, anti-aging and anti-fatigue performance, stably maintain elastic sealing performance under -30°C low temperature to 130°C high temperature continuous working environment.
All finished products pass 18MPa long-cycle high pressure fatigue impact test. Effectively isolate nitrogen chamber and hydraulic oil circuit, eliminate internal nitrogen leakage and external oil seepage failure, keep breaker impact force constant, avoid power drop caused by diaphragm cracking during constructionAlibaba.co....
Equipped with matched positioning gaskets and reinforced backup rings required for accumulator overhaul. One set covers all sealing accessories for accumulator maintenance, shorten equipment downtime and reduce overall machinery maintenance cost.
Each batch of piston cup diaphragm undergoes air tightness detection, high-frequency stretching fatigue test and high-low temperature aging screening before delivery. Fully meets OEM original factory production standards, stable and reliable long-term mining heavy-duty operation performance.
Suitable for Etc K80, OKB3600 hydraulic breakers mounted on various heavy-duty engineering equipment:
Welcome to HOVOO, a Chinese seal factory. Production of PU, Rubber and PTFE seals. The seals include O-ring, piston seal, rod seal, Gray ring and gas seal.
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