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 HM60 / HM110 / HM300 / HM301 / HM305 / HM550 / HM560 / HM580 hydraulic rock breakers. As the core energy storage sealing part of breaker accumulator, it integrates high-elastic diaphragm and wear-resistant seal cup, fully matching original KRUPP installation dimensions.
Adopted imported high-strength FKM fluororubber + reinforced fiber composite material, the product features outstanding nitrogen resistance, hydraulic oil resistance, fatigue resistance and anti-tear performance. It solves common faults including nitrogen leakage, impact force attenuation, frequent failure of accumulator, effectively stabilizing breaker striking power and extending service life under long-term quarry, demolition and heavy construction working conditions.
Item |
Detailed Parameter |
Product Name |
KRUPP HM Series Breaker Accumulator Diaphragm & Seal Cup |
Applicable Models |
HM60, HM110, HM300, HM301, HM305, HM550, HM560, HM580 Hydraulic Rock Breaker |
Compatible Series |
KRUPP HM Medium & Heavy Duty Hydraulic Breaker Series |
Main Material |
Imported FKM Fluororubber + High Tensile Fiber Reinforced Layer |
Max Working Pressure |
36MPa |
Working Temperature |
-25°C ~ 130°C |
Kit Contents |
Accumulator diaphragm, integral seal cup, matching O-rings, auxiliary gaskets |
Cross Reference OEM No. |
Custom matched KRUPP original diaphragm part numbers for each HM model |
Net Weight |
0.4–0.9kg (varies by model) |
Applicable System |
Hydraulic breaker nitrogen accumulator energy storage system |
Warranty |
12 Months |
Fully fit KRUPP HM60/HM110/HM300/HM301/HM305/HM550/HM560/HM580 breaker accumulator housing, consistent with original OEM drawing standards. No cutting, grinding or modification required for direct replacement installation. Each model corresponds to exclusive diaphragm size to avoid nitrogen leakage caused by mismatched size.
Core diaphragm adopts multi-layer fiber reinforced FKM composite structure, with ultra-high tear resistance and anti-fatigue performance. Resists hydraulic oil corrosion, nitrogen permeation, high temperature aging, maintains stable elasticity under cyclic high-frequency impact from -25°C to 130°C. Avoid premature hardening, cracking and air leakage of ordinary rubber diaphragms.
All finished products pass 36MPa high-pressure nitrogen air tightness cycle test. Effectively lock accumulator nitrogen pressure, eliminate slow nitrogen leakage, striking power drop, intermittent weak blow problems. Keep continuous stable impact energy output of the breaker, reduce frequent nitrogen refilling maintenance cost.
Complete supporting accessories including diaphragm main body, wear-resistant seal cup, matched O-rings and gaskets, covering all sealing parts needed for accumulator overhaul. One set completes repair, save parts matching time and reduce equipment downtime.
Each batch undergoes raw material tensile test, high-frequency fatigue impact test, high-low temperature aging test and nitrogen sealing test before delivery. Fully meets KRUPP original equipment quality standards, stable long-term performance under severe mining and demolition working conditions.
Suitable for KRUPP HM series hydraulic breakers mounted on all types of heavy-duty excavators for multiple harsh working scenarios: • Quarry rock crushing & mining excavation • Road demolition, concrete breaking & road reconstruction • Foundation pit hard rock excavation • Urban building demolition & waste dismantling • Tunnel construction hard rock tunneling • Heavy engineering machinery crushing operation • Mining mobile crushing 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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