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 specially developed for KRUPP HM700, HM701, HM710, HM711 hydraulic rock breakers. It is the core nitrogen storage sealing component of the breaker accumulator, independently equipped with high-strength metal lining and reinforced rubber main body.
Adopted imported high-performance HNBR + FKM composite rubber material, with outstanding nitrogen resistance, hydraulic oil resistance, high impact fatigue resistance and high & low temperature stability. It fully matches the original KRUPP diaphragm size, thoroughly solves common failures such as nitrogen leakage, impact force attenuation, hydraulic oil emulsification caused by damaged diaphragm, and greatly extends the continuous operation life of medium & large hydraulic breakers under long-term heavy rock crushing working conditions.
Item |
Detailed Parameter |
Product Name |
KRUPP HM700/HM701/HM710/HM711 Breaker Accumulator Diaphragm Seal Cup |
Applicable Model |
KRUPP HM700 / HM701 / HM710 / HM711 Medium & Large Hydraulic Rock Breaker |
Compatible Series |
KRUPP HM Series Heavy-Duty Hydraulic Breaker |
Main Material |
Imported HNBR Fluororubber Composite + Integrated Reinforced Metal Liner |
Overall Dimension |
Φ185mm × Height 50mm |
Max Bearing Nitrogen Pressure |
130MPa |
Working Temperature |
-35°C ~ 135°C |
Product Composition |
Integrated rubber diaphragm, embedded metal pressure plate, anti-extrusion reinforcing edge |
Cross Reference OEM No. |
3361329022, 3362261647 |
Net Weight |
Approximately 0.85kg |
Applicable System |
Breaker nitrogen accumulator energy storage sealing system |
Warranty |
12 Months |
Fully fit KRUPP HM700/HM701/HM710/HM711 breaker accumulator cavity, consistent with OEM part numbers 3361329022 and 3362261647. No cutting, padding or modification required for direct one-step installation, matching original assembly tolerance perfectly.
Main diaphragm adopts imported HNBR+FKM blended fluororubber with integrated metal liner reinforcement. It resists nitrogen penetration, hydraulic oil corrosion, ozone aging and high-frequency impact fatigue, stably maintains elastic sealing performance between -35°C and 135°C without hardening or cracking.
All finished diaphragms undergo 130MPa high-pressure nitrogen sealing fatigue testing before delivery. Effectively prevent nitrogen escape and oil-gas mixing emulsification, maintain stable accumulator energy storage capacity, avoid breaker impact power drop, reduce frequent nitrogen refueling maintenance frequency.
Thickened anti-extrusion edge design + embedded steel pressure plate, effectively buffer instantaneous high-frequency impact pressure during rock breaking, avoid diaphragm edge tearing and bulge damage, significantly prolong service life compared with ordinary rubber diaphragms.
Each batch of diaphragms passes air tightness test, high pressure fatigue cycle test, high & low temperature aging test and dimensional full inspection, fully meets KRUPP original equipment quality standards, stable and reliable for long-term mine & construction heavy-load operation.
Suitable for KRUPP HM700/HM701/HM710/HM711 hydraulic breakers matched on multiple heavy-duty 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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