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 diaphragm cup is specially engineered for BRESTA BS523 & BS527 hydraulic rock breakers, core energy storage sealing spare parts widely matched on medium-size excavator hydraulic hammers. It serves as the isolation barrier between nitrogen gas chamber and hydraulic oil circuit, preventing nitrogen leakage, weak impact force and abnormal high temperature faults.
Manufactured with modified imported high-toughness FKM fluororubber reinforced fiber composite material, the diaphragm cup features outstanding fatigue resistance, high pressure resistance, hydraulic oil corrosion resistance and wide temperature adaptability. It fully replaces original BRESTA OEM diaphragm, stabilizes breaker impact energy, reduces frequent maintenance and extends breaker service life under long-term rock breaking, demolition and mining heavy load working conditions.
Item |
Detailed Parameter |
Product Name |
BRESTA BS523 BS527 Hydraulic Breaker Diaphragm Cup |
Applicable Model |
BS523, BS527 Medium Hydraulic Rock Breaker |
Compatible Series |
BRESTA BS Series Hydraulic Hammer |
Main Material |
Imported Reinforced FKM Fluororubber + Fiber Reinforcement Layer |
Max Working Pressure |
18.0MPa |
Working Temperature |
-30°C ~ 120°C |
Kit Contents |
Integral diaphragm cup, auxiliary O-ring sealing set, positioning gaskets |
Cross Reference OEM No. |
BRESTA-BS523, BRESTA-BS527, BR523001, BR527002 |
Net Weight |
Approximately 0.42kg |
Applicable System |
Hydraulic breaker nitrogen accumulator energy storage system |
Warranty |
12 Months |
Fully dimensionally matched with original BRESTA BS523 and BS527 breaker accumulator structure, consistent with OEM part numbers BR523001, BR527002. No cutting, grinding or modification required for quick on-site installation.
Core diaphragm body adopts fiber-reinforced modified FKM rubber via one-time high-temperature vulcanization molding. Ultra-high anti-fatigue stretch performance, withstands thousands of high-frequency reciprocating deformation per minute without cracking, aging or permanent deformation; excellent anti-oil, anti-corrosion performance, stable operation under -30°C to 120°C complex temperature environment.
All finished products pass 18.0MPa high-pressure air tightness fatigue cycle test. Effectively isolate hydraulic oil and nitrogen storage cavity, eliminate nitrogen escape, insufficient impact force, breaker power attenuation and oil overheating failures, maintain consistent breaking efficiency during long continuous operation.
Complete supporting accessories including main diaphragm cup, matching O-rings and positioning gaskets, covering all sealing consumables needed for accumulator overhaul. One set completes full repair, shortens equipment downtime and cuts overall maintenance cost.
Every batch of diaphragm cups undergoes air tightness cycling test, high-low temperature aging test and dynamic fatigue stretching test before delivery, fully meets BRESTA original equipment manufacturing standards, guarantee stable long-term construction site performance.
Compatible with BRESTA BS523 / BS527 hydraulic rock breakers installed on multiple heavy-duty construction equipment: • 6–12 ton medium excavators (Sany SY75, XCMG XE80, LiuGong 908, Zoomlion ZE75) • Backhoe loaders with hydraulic hammer attachments • Municipal demolition machinery • Road reconstruction & concrete crushing equipment • Quarry secondary rock breaking equipment • Heavy-duty mobile hydraulic crushing machinery
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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