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 kit is custom engineered for GB series hydraulic rock breakers including GB8AF, GB9F and GB220E, widely equipped on medium & large excavators for mining, demolition and road construction work. The full set includes accumulator diaphragm (rubber cup), O-rings, backup rings, gaskets and auxiliary sealing parts for complete breaker accumulator overhaul.
Manufactured with imported high-toughness PU composite and FKM fluororubber, the diaphragm boasts outstanding oil resistance, shock resistance, high pressure resistance and anti-aging performance. It perfectly replaces original OEM diaphragm parts, solves typical failures such as nitrogen leakage, unstable impact force, weak breaking power and diaphragm cracking, and greatly extends the service life of hydraulic breakers under continuous heavy impact operation.
Item |
Detailed Parameter |
Product Name |
GB8AF/GB9F/GB220E Hydraulic Breaker Accumulator Diaphragm Kit |
Applicable Models |
GB8AF, GB9F, GB220E Hydraulic Rock Breaker |
Compatible Series |
GB Series Medium & Large Hydraulic Breaker |
Main Material |
Imported High Toughness PU Composite + FKM Fluororubber + Reinforced PTFE Backup Ring |
Max Working Pressure |
28MPa |
Working Temperature |
-30°C ~ 120°C |
Kit Contents |
Accumulator Diaphragm (Rubber Cup), O-rings, Sealing Gaskets, PTFE Backup Rings, Full Overhaul Accessories |
Cross Reference OEM No. |
GB8AF-DIA, GB9F-DIA, GB220E-DIA, 3315234901 |
Net Weight |
Approximately 1.1kg |
Applicable System |
Hydraulic Breaker Nitrogen Accumulator Closed Sealing System |
Warranty |
12 Months |
Fully dimensional matched with original GB8AF, GB9F, GB220E breaker accumulator diaphragms, consistent with OEM part numbers GB8AF-DIA, GB9F-DIA, GB220E-DIA and 3315234901. No cutting, grinding or modification required for direct plug-and-play installation.
Core diaphragm adopts upgraded PU+FKM composite formula, featuring ultra-high tear resistance, shock fatigue resistance and hydraulic oil corrosion resistance. Stable elastic sealing performance maintained under -30°C low temperature and 120°C high temperature working environment, not easy to crack or deform under frequent impact loads.
All parts pass strict 28MPa high pressure nitrogen tightness test. Effectively isolates hydraulic oil and nitrogen inside accumulator, eliminates internal gas leakage and oil mixing problems, keeps continuous stable impact energy, avoids breaker power attenuation and intermittent breaking failure.
Covers all sealing spare parts required for full accumulator maintenance of GB8AF/GB9F/GB220E breakers. Integrated matching accessories reduce matching error during repair, shorten equipment downtime and lower overall maintenance cost of construction machinery.
Each diaphragm kit undergoes dimensional inspection, high-pressure nitrogen sealing test, repeated impact fatigue test and aging test before delivery, fully meets OEM production standards, guarantees long-term reliable operation under harsh mining and construction working conditions.
Suitable for GB8AF, GB9F, GB220E hydraulic rock breakers mounted on various heavy-duty construction 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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