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 (seal cup) is precision manufactured for RAMMAR hydraulic rock breakers S86, G80, G88, G90, G100 and OEM part BR4099, the core energy storage sealing spare part of breaker nitrogen accumulator. It isolates high-pressure nitrogen chamber and hydraulic oil circuit, delivering stable impact force for long-hour crushing operation.
Adopted imported high-performance PPDI polyurethane & modified NBR composite material, the diaphragm features outstanding fatigue resistance, high pressure resistance, oil aging resistance and anti-tearing performance. It perfectly replaces original RAMMAR OEM diaphragm, solves common failures like weak impact power, nitrogen leakage, oil mixing and short service life, greatly lowering breaker maintenance frequency and operating cost.
Item |
Detailed Parameter |
Product Name |
Rammar S86/G80/G88/G90/G100 BR4099 Breaker Diaphragm Seal Cup |
Applicable Breaker Models |
RAMMAR S86, G80, G88, G90, G100; OEM Cross Part No. BR4099 |
Core Material |
Imported PPDI Polyurethane + Reinforced Modified NBR Rubber |
Max Working Pressure |
28MPa |
Working Temperature |
-30°C ~ 130°C |
Product Structure |
Integral one-piece bowl-shaped diaphragm, integrated reinforced edge |
Cross Reference OEM No. |
BR4099, 172307 |
Net Weight |
Approximately 0.42kg per piece |
Applicable System |
Hydraulic breaker nitrogen accumulator energy storage system |
Warranty |
12 Months |
1. 100% OEM Exact Replacement. Fully matched RAMMAR S86/G80/G88/G90/G100 series breakers, corresponds to OEM part BR4099 & 172307. No trimming, no modification, direct one-step installation.
2. Premium Composite Wear-resistant Material. Main body adopts high-strength PPDI polyurethane with high resilience, matched modified NBR reinforced edge. Excellent hydraulic oil resistance, anti-aging and anti-fatigue, withstands millions of high-frequency reciprocating deformations without cracking or permanent deformation under heavy load.
3. Zero Gas-oil Mix & Stable Impact Output. Strictly tested under 28MPa ultra-high pressure, fully separates nitrogen and hydraulic oil, eliminates internal leakage, nitrogen escape and power attenuation. Maintains consistent breaker impact energy during continuous mining and demolition work.
4. Integrated Reinforced Edge Design. Thickened bowl edge structure enhances anti-tearing performance, effectively avoids edge rupture caused by long-term high-frequency stretching, significantly extends service life compared with ordinary rubber diaphragms.
5. Strict Full-process Factory QC. Every diaphragm passes air tightness, high pressure fatigue and high-low temperature aging tests before delivery, fully meets OEM production standards, stable and reliable for long-term harsh construction site working conditions.
6. Wide Application Scope. Perfectly fits RAMMAR S86, G80, G88, G90, G100 hydraulic rock breakers equipped on various excavators and heavy machinery:
• Excavator-mounted hydraulic rock breakers (6–30 ton excavator matching models) • Mining secondary crushing & stone quarry breaking equipment • Municipal demolition, reinforced concrete breaking machinery • Road repair, tunnel excavation & foundation construction hammers • Metallurgical slag cleaning, furnace dismantling heavy-duty breakers • All closed nitrogen accumulator hydraulic breaker 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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