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 high-performance accumulator diaphragm seal cup is specially developed for Furukawa F5 & F9 hydraulic rock breakers. It serves as the core pressure isolation component of the hammer nitrogen accumulator, effectively isolating hydraulic oil and nitrogen gas. Manufactured with imported high-elastic HNBR & reinforced FKM fluororubber composite material, it delivers outstanding shock resistance, oil resistance, low-temperature flexibility and anti-fatigue performance. It perfectly replaces original Furukawa factory diaphragms, solves common faults such as nitrogen leakage, hammer weak impact and pressure attenuation, and greatly extends the continuous working life of the breaker under high-frequency impact heavy-duty conditions.
Item |
Detailed Parameter |
Product Name |
FURUKAWA F5 F9 Hydraulic Breaker Diaphragm Seal Cup |
Applicable Model |
Furukawa F5 / Furukawa F9 Rock Breaker |
Compatible Series |
Furukawa F Series Hydraulic Hammer |
Main Material |
Imported HNBR + FKM Fluororubber Reinforced Composite |
Max Bearing Impact Pressure |
120MPa |
Working Temperature |
-35°C ~ 130°C |
Product Structure |
Integral dome-shaped rubber diaphragm with reinforced edge |
Cross Reference OEM No. |
KF5-00103, KF9-00207 |
Single Net Weight |
Approximately 0.42kg |
Applicable System |
Breaker accumulator nitrogen-hydraulic isolation system |
Warranty |
12 Months |
Precision mold one-step forming, fully matched with the original installation size of Furukawa F5/F9 breakers, corresponding to OEM part numbers KF5-00103 and KF9-00207. No cutting, grinding or modification required for direct plug-and-play installation.
The main diaphragm body adopts imported HNBR fluororubber composite formula, with thickened reinforced edge design. It resists hydraulic oil corrosion, high-frequency impact fatigue and aging cracking, and maintains stable elasticity within -35°C to 130°C wide temperature range.
All finished diaphragms pass 120MPa ultra-high pressure fatigue impact testing. It completely blocks nitrogen escape and hydraulic oil backflow, stabilizes the accumulator energy storage effect, ensures consistent breaking impact force, and avoids weak hammering and low construction efficiency caused by air leakage.
Independent finished diaphragm cup, directly used for accumulator overhaul replacement. No need to match extra auxiliary sealing parts, simplifies on-site maintenance procedures and shortens equipment downtime repair time.
Every diaphragm undergoes air tightness, high-frequency impact aging and low-temperature flexibility tests before delivery, fully meets OEM factory technical standards, and provides stable long-term reliability for heavy construction working conditions.
Suitable for Furukawa F5/F9 hydraulic breakers installed on multiple heavy-duty engineering equipment:
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