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 cup (leather cup) is specially developed for KRUPP HM380 hydraulic rock breakers. It is the core energy-isolating sealing part of the breaker nitrogen accumulator, fully separating high-pressure nitrogen and hydraulic oil to stabilize impact force.
Adopted imported reinforced NBR and high-toughness FKM fluororubber with fiber-reinforced vulcanization process, it features outstanding oil resistance, anti-fatigue, high-frequency impact resistance and wide temperature adaptability. Perfect OEM replacement for original KRUPP HM380 diaphragm, solves common failures such as nitrogen leakage, insufficient striking power, frequent accumulator inflation and premature diaphragm rupture, greatly extending breaker service life under continuous mining & demolition heavy load.
Item |
Detailed Parameter |
Product Name |
KRUPP HM380 Hydraulic Breaker Accumulator Diaphragm Cup |
Applicable Model |
KRUPP HM380 Rock Breaker |
Compatible Series |
KRUPP HM Series Medium & Large Hydraulic Hammer |
Main Material |
Imported Fiber Reinforced NBR / FKM Fluororubber |
Max Bearing Impact Pressure |
26MPa |
Working Temperature |
-35°C ~ 125°C |
Product Structure |
Integral forming diaphragm with thickened edge anti-tear design |
Cross Reference OEM No. |
332/A2425, 332/C7817 |
Single Net Weight |
Approximately 0.35kg |
Applicable System |
Hydraulic breaker nitrogen accumulator energy storage system |
Warranty |
12 Months |
Fully matched with original KRUPP HM380 breaker accumulator structure, corresponds to OEM part numbers 332/A2425 and 332/C7817. Precise size without trimming, direct installation to replace old diaphragm cup.
Main diaphragm body uses fiber-reinforced modified NBR, key stress area adopts FKM fluororubber composite layer. Ultra-high tensile and anti-fatigue performance, resistant to hydraulic oil corrosion, no hardening or cracking under long-term high-frequency reciprocating deformation. Stable operation range from -35°C to 125°C.
All finished diaphragms pass 26MPa high-pressure nitrogen tightness test. Effectively isolate oil and nitrogen, eliminate air mixing, maintain constant striking energy, avoid power attenuation and overheating failure of the breaker main body. Thickened edge anti-tear structure prevents edge cracking under long shock load.
Single finished diaphragm cup is ready for accumulator maintenance, no auxiliary gaskets needed for routine replacement. Simplifies on-site repair procedures, shortens equipment downtime and reduces overall maintenance cost of construction machinery.
Every batch undergoes vulcanization aging test, high-frequency fatigue impact test and air tightness inspection before delivery. Fully meets original factory technical standards, stable and reliable for long-term harsh mining and construction working conditions.
Suitable for KRUPP HM380 hydraulic rock breakers equipped on various heavy-duty construction 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.
EN
AR
CS
DA
NL
FI
FR
DE
EL
IT
JA
KO
NO
PL
PT
RO
RU
ES
SV
TL
IW
ID
LV
SR
SK
VI
HU
MT
TH
TR
FA
MS
GA
CY
IS
KA
UR
LA
TA
MY
