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 high-performance accumulator diaphragm & complete repair seal kit is specially developed for OKADA UB7, UB8, UB10, UB11 series hydraulic rock breakers, widely matched with mini & medium excavators for demolition, mining and road construction. The full set includes accumulator diaphragm (rubber cup), shaft oil seals, O-rings, gaskets, backup rings and all matching sealing parts for full breaker overhaul.
Made of imported high-toughness PU polyurethane + FKM fluororubber composite material, the diaphragm features outstanding impact fatigue resistance, oil resistance, high & low temperature stability. It perfectly replaces original OKADA OEM rubber cup, solves common faults like accumulator air leakage, weak impact force, abnormal hammer jitter and hydraulic oil leakage, greatly extending breaker service life under long-term high-frequency impact working conditions.
Item |
Detailed Parameter |
Product Name |
OKADA UB7/UB8/UB10/UB11 Hydraulic Breaker Diaphragm & Seal Cup Repair Kit |
Applicable Model |
UB7, UB8, UB10, UB11 OKADA hydraulic rock breaker series |
Compatible Series |
OKADA UB small & medium hydraulic hammer accumulator assembly |
Main Material |
Imported high-toughness PU composite diaphragm + FKM fluororubber seals + reinforced PTFE backup rings |
Max Working Impact Pressure |
26.0MPa |
Working Temperature |
-30°C ~ 130°C |
Kit Contents |
Accumulator diaphragm rubber cup, shaft seals, O-rings, cylinder gaskets, dust seals, backup rings, full overhaul sealing accessories |
Cross Reference OEM No. |
OK-UB7, OK-UB8, OK-UB10, OK-UB11, 86382321, 86633855 |
Net Weight |
Approximately 0.68kg |
Applicable System |
Hydraulic breaker nitrogen accumulator energy storage system |
Warranty |
12 Months |
Fully matched with original OKADA UB7/UB8/UB10/UB11 hydraulic breakers, consistent with OEM part numbers. No cutting, grinding or modification required, quick on-site installation, compatible with original accumulator shell and cylinder assembly.
Core energy storage diaphragm adopts PU+FKM double-layer composite process, strong anti-fatigue performance, resistant to hydraulic oil corrosion, high-frequency impact cracking and aging. Stable performance under -30°C low temperature construction and 130°C continuous high-temperature operation.
All components pass 26.0MPa high-pressure air tightness and fatigue impact tests. Effectively eliminate accumulator nitrogen leakage, external cylinder oil seepage, internal hydraulic pressure loss, maintain stable hammer impact frequency and striking force, avoid weak breaking and idle jitter.
Integrates diaphragm rubber cup and all supporting sealing parts required for full breaker maintenance. One set covers all consumable sealing accessories, reduce repeated purchasing and shorten equipment downtime during repair.
Every finished kit undergoes air tightness cycling test, high-frequency impact fatigue test and high-low temperature aging test before delivery, fully meets OEM production standards, stable and reliable for long-term heavy construction work.
Suitable for OKADA UB7/UB8/UB10/UB11 hydraulic hammers mounted on various construction 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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