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 & piston cup assembly is specially developed for KRUPP HM965 / HM1300 / HM2000 / HM2500 hydraulic rock breakers. It serves as the core isolation component between high-pressure nitrogen chamber and hydraulic oil circuit, including integrated reinforced rubber diaphragm, wear-resistant piston cup, auxiliary sealing gaskets and positioning retaining rings for complete accumulator overhaul replacement.
Produced with imported high-performance HNBR composite rubber + fiber reinforcement layer, the product delivers outstanding anti-fatigue, oil resistance, high pressure and wide temperature adaptability. It thoroughly solves common faults like nitrogen leakage, hydraulic oil emulsification, impact force attenuation and unstable blow frequency, greatly extending breaker service life under continuous high-frequency crushing, mining and demolition heavy-load working conditions.
Item |
Detailed Parameter |
Product Name |
KRUPP HM Series Breaker Accumulator Diaphragm & Seal Cup |
Applicable Model |
HM965 / HM1300 / HM2000 / HM2500 Hydraulic Rock Breaker |
Compatible Series |
KRUPP HM Heavy-Duty Hydraulic Hammer Series |
Main Material |
Imported Reinforced HNBR Rubber + Fiber Reinforcement Layer |
Max Working Pressure |
120MPa |
Working Temperature |
-35°C ~ 135°C |
Kit Contents |
Main diaphragm, piston seal cup, positioning gaskets, anti-extrusion retaining rings, full accumulator repair accessories |
Cross Reference OEM No. |
KR965-001, KR1300-003, KR2000-007, KR2500-012 |
Net Weight |
HM965≈0.9kg; HM1300≈1.3kg; HM2000≈1.8kg; HM2500≈2.4kg |
Applicable System |
Hydraulic breaker nitrogen accumulator energy storage system |
Warranty |
12 Months |
Fully dimensionally matched with original KRUPP HM965/HM1300/HM2000/HM2500 breaker accumulator structure, consistent with original OEM part numbers. No cutting, grinding or modification required for direct plug-and-play installation, perfectly matching the assembly tolerance of the original hammer cylinder block.
Core diaphragm and piston cup adopt imported modified HNBR with built-in fiber reinforcement layer, effectively resisting hydraulic oil corrosion, high-frequency cyclic fatigue and aging. Maintains stable elasticity from -35°C low temperature to 135°C high-temperature continuous operation, no hardening, cracking or permanent deformation.
All finished products pass 120MPa ultra-high pressure fatigue cycle test. Completely isolates nitrogen chamber and hydraulic oil circuit, eliminates oil emulsification, nitrogen leakage and blow force drop, keeps stable impact frequency and breaking power during long-hour continuous heavy crushing.
Equipped with all supporting sealing accessories required for accumulator full maintenance: main diaphragm, piston seal cup, anti-extrusion ring, sealing gaskets and positioning shims. One set meets full overhaul demand, reduces spare parts matching time and lowers equipment maintenance downtime cost.
Every batch undergoes dimensional inspection, air tightness test, high-pressure fatigue test and high-low temperature aging test before delivery, fully reaching OEM original equipment quality standards, supporting long-term stable operation in harsh mining and construction sites.
Suitable for KRUPP HM series heavy hydraulic breakers mounted on all kinds of heavy-duty engineering 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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