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 tailor-made for AMPA3000, AMPA4000, AMPA5000 series hydraulic rock breakers, the core energy-isolating spare part for breaker nitrogen accumulators widely equipped on medium & large excavators and mining construction machinery. It integrates integrated piston cup and reinforced diaphragm one-piece molding, fully isolates high-pressure nitrogen chamber and hydraulic oil circuit.
Adopted imported high-performance modified HNBR + fabric reinforced composite material, it features outstanding fatigue resistance, high temperature resistance, oil resistance and anti-explosion performance. Direct OEM replacement for original AMPA breaker diaphragm, effectively solving common failures including nitrogen leakage, impact power drop, accumulator failure and frequent oil temperature rise, greatly extending breaker service life under continuous high-frequency crushing operation.
Item |
Detailed Parameter |
Product Name |
AMPA Series Hydraulic Breaker Cup Diaphragm |
Applicable Model |
AMPA3000 / AMPA4000 / AMPA5000 Rock Breaker |
Compatible Series |
AMPA medium & large hydraulic hammer series |
Main Material |
Imported reinforced modified HNBR + high-tensile fabric interlayer |
Max Working Pressure |
130MPa |
Working Temperature |
-35°C ~ 135°C |
Product Composition |
Integrated piston cup, energy storage diaphragm, anti-tear reinforced layer |
Cross Reference OEM No. |
AMPA3000-DIA, AMPA4000-DIA, AMPA5000-DIA |
Net Weight |
0.45kg / 0.62kg / 0.8kg (corresponding to 3000/4000/5000 model) |
Applicable System |
Hydraulic breaker nitrogen accumulator energy storage system |
Warranty |
12 Months |
Perfect dimensional matching for AMPA3000, AMPA4000, AMPA5000 hydraulic breakers, consistent with OEM part numbers AMPA3000-DIA, AMPA4000-DIA, AMPA5000-DIA. No cutting, padding or modification required for direct on-site installation.
Core diaphragm & piston cup adopt imported modified HNBR with built-in high-strength fabric interlayer, anti-fatigue, anti-tear, oil & hydraulic fluid corrosion resistant, stable elastic performance from -35°C low temperature to 135°C high temperature working condition.
All finished products pass 130MPa ultra-high pressure air tightness and thousands of times reciprocating fatigue tests. Completely stop nitrogen leakage and hydraulic oil cross-leakage inside accumulator, maintain stable impact force and consistent crushing efficiency without power attenuation.
Integrated molding of piston cup and energy storage diaphragm, eliminates assembly gap risk of split parts, simplifies breaker overhaul procedure, shortens maintenance hours and reduces equipment overall operating cost.
Each batch of cup diaphragms undergoes air tightness, high pressure, high-frequency fatigue and thermal aging tests before delivery, fully meets original AMPA component standards, guarantees long-term stable operation under heavy mining & construction working conditions.
Suitable for AMPA3000/4000/5000 hydraulic breakers matched on various heavy-duty engineering equipment: • Medium & large tonnage excavators (16–45 ton excavators) • Quarry & mine stone crushing, secondary rock breaking • Municipal demolition, reinforced concrete dismantling • Road reconstruction, foundation excavation, tunnel engineering • Metallurgical slag cleaning, furnace body dismantling • Heavy-duty mobile crushing machinery, mining hydraulic hammer 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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