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 kit is specially developed for OKADA UB11-2 hydraulic rock breakers, widely matched on 6–9 ton small excavators and engineering demolition machinery. The full set includes main diaphragm seal cup, O-rings, gaskets, dust seals and auxiliary sealing backup rings for complete breaker accumulator overhaul.
Constructed from imported high-performance HNBR composite rubber with reinforced fiber layer, the kit boasts outstanding oil resistance, anti-fatigue, high pressure and wide temperature adaptability. It perfectly replaces original OKADA diaphragm parts, effectively solving common faults such as accumulator air leakage, pressure attenuation, weak breaking force and frequent diaphragm rupture, greatly extending continuous service life under high-frequency impact heavy-load working conditions.
Item |
Detailed Parameter |
Product Name |
OKADA UB11-2 Breaker Accumulator Diaphragm Seal Cup Kit |
Applicable Model |
UB11-2 Hydraulic Rock Breaker |
Compatible Series |
OKADA UB11 Series Hydraulic Hammer |
Main Material |
Imported Reinforced HNBR Rubber + Fiber Reinforcement Backup Ring |
Max Working Pressure |
18MPa |
Working Temperature |
-30°C ~ 120°C |
Kit Contents |
Main diaphragm seal cup, O-rings, flat gaskets, dust seals, all overhaul auxiliary seals |
Cross Reference OEM No. |
OKADA-UB11-2, DIA-UB112-001 |
Net Weight |
Approximately 0.45kg |
Applicable System |
Hydraulic breaker nitrogen accumulator energy storage system |
Warranty |
12 Months |
Fully dimensional matched with original OKADA UB11-2 breaker accumulator structure, consistent with OEM part numbers OKADA-UB11-2 and DIA-UB112-001. No cutting, grinding or modification needed for direct plug-and-play installation.
Core diaphragm adopts thickened fiber-reinforced HNBR composite material, with superior hydraulic oil corrosion resistance, anti-impact fatigue and aging resistance. Stable elastic sealing performance maintained between -30°C to 120°C, avoiding premature cracking under long-time high-frequency impact.
All sealing components pass strict 18MPa high-pressure nitrogen tightness testing. Effectively block internal and external air leakage of accumulator, lock stable nitrogen pressure, guarantee consistent breaker impact frequency and breaking force, eliminate weak hammer failure.
Integrates all sealing accessories required for full accumulator maintenance of UB11-2 breaker. One set covers all wearing sealing parts, reduce repeated purchasing, shorten on-site repair downtime and lower equipment operation maintenance cost.
Each diaphragm seal kit undergoes air tightness, cyclic impact fatigue and high-low temperature aging tests before delivery, fully meets OEM production standards, delivers stable and reliable long-term construction performance.
Suitable for OKADA UB11-2 hydraulic breakers installed on various light & medium construction equipment: • 6–9 ton mini excavators (Kubota KX163, Sany SY75, XCMG XE75, Lovol FR75, Liugong 906E) • Small backhoe loaders • Road demolition & municipal engineering machinery • Quarry stone crushing equipment • Hydraulic hammer nitrogen accumulator energy storage system • Mobile heavy-duty impact 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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