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 cup diaphragm is custom-engineered for RAMMAR G120, G130 and BR7013 hydraulic rock breakers, a core energy-isolation spare part widely fitted on medium & large excavator demolition machinery. It acts as a sealing barrier separating high-pressure nitrogen chamber and hydraulic oil circuit, effectively solving common failures including nitrogen leakage, weak impact force, breaker power drop and rapid oil temperature rise.
Manufactured with imported reinforced PU composite + modified high-elastic NBR, the diaphragm delivers outstanding fatigue resistance, high-pressure resistance, oil aging resistance and anti-tearing performance. It perfectly matches OEM original dimensions, restores stable striking energy and extends the full service life of hydraulic breakers under continuous heavy crushing work.
Item |
Detailed Parameter |
Product Name |
Rammar G120 G130 BR7013 Hydraulic Breaker Cup Diaphragm |
Applicable Models |
Rammar G120, G130, BR7013 Rock Breaker |
Compatible Series |
Rammar medium-large hydraulic breaker series |
Main Material |
Imported reinforced PU + modified high-elastic NBR composite |
Max Working Pressure |
28MPa |
Working Temperature |
-25°C ~ 120°C |
Core Function |
Isolate nitrogen & hydraulic oil, store impact energy for accumulator |
Cross Reference OEM No. |
RM-G120-DIA, RM-G130-DIA, BR7013-MEM01 |
Net Weight |
Approximately 1.1kg |
Applicable System |
Hydraulic breaker nitrogen accumulator system |
Warranty |
12 Months |
Fully consistent with original Rammar G120/G130/BR7013 breaker installation size, matches OEM part codes RM-G120-DIA, RM-G130-DIA, BR7013-MEM01. No trimming or modification needed for direct one-step installation.
Adopts imported high-performance PU + modified NBR dual composite formula, with integrated fiber reinforcement layer. Features excellent oil resistance, ozone aging resistance and high rebound elasticity, maintains stable physical performance from -25°C to 120°C long-term working environment.
Strictly cycled fatigue testing under 28MPa peak working pressure. Can withstand millions of high-frequency reciprocating deformations without cracking, permanent deformation or gas leakage. Stabilizes nitrogen pressure and keeps consistent breaker striking force all day long.
Perfectly solves frequent issues caused by failed diaphragm: nitrogen escape, insufficient impact power, slow hammer return, hydraulic oil overheating, abnormal breaker vibration, reduces secondary wear of piston and cylinder components.
Each diaphragm passes high-pressure air tightness, cyclic fatigue, high-temperature aging and dimensional tolerance tests before delivery, fully meets OEM production standards, stable and reliable for long-term construction site heavy load operation.
Designed exclusively for Rammar G120, G130, BR7013 hydraulic rock breakers equipped on various heavy construction equipment: • 12–20 ton medium & large excavators • Mine rock crushing & quarry demolition equipment • Road concrete breaking, old building dismantling machinery • Municipal engineering hydraulic breaking units • Quarry, metallurgy, tunnel excavation heavy-duty breakers • Continuous operation hydraulic hammer accumulator systems
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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