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 piston cup diaphragm is specially engineered for Etc. DNB30-L hydraulic rock breakers widely fitted on medium excavators and engineering demolition machinery. It serves as the core energy storage sealing component, isolating high-pressure nitrogen and hydraulic oil inside the accumulator. Made of imported high-performance modified PPDI reinforced elastomer, it delivers outstanding fatigue resistance, oil resistance and high-low temperature stability. It fully replaces original Etc. OEM diaphragm parts, solves common faults such as nitrogen leakage, impact force attenuation and abnormal hammering, and extends the continuous working life of the breaker under long-term heavy crushing operations.
Item |
Detailed Parameter |
Product Name |
DNB30-L Hydraulic Breaker Piston Cup Diaphragm |
Applicable Model |
DNB30-L Medium Hydraulic Rock Breaker |
Compatible Series |
Etc. DNB Series Hydraulic Hammer |
Main Material |
Imported Reinforced PPDI Elastomer + Fiber Reinforced Layer |
Max Working Pressure |
22.0MPa |
Working Temperature |
-30°C ~ 130°C |
Kit Contents |
Integral diaphragm cup, matching O-rings, auxiliary gaskets, full accumulator repair accessories |
Cross Reference OEM No. |
ETC-DNB30-L, DH3008612 |
Net Weight |
Approximately 0.42kg |
Applicable System |
Breaker nitrogen accumulator energy storage hydraulic system |
Warranty |
12 Months |
1. 100% OEM Exact Replacement. Fully matched with original Etc. DNB30-L hydraulic breakers, consistent with OEM part numbers ETC-DNB30-L and DH3008612. Standard dimensional tolerance, no cutting or modification required for direct replacement installation.
2. Premium Imported Reinforced PPDI Material. Core diaphragm body adopts high-strength modified PPDI composite material with built-in fiber reinforcement layer. Excellent anti-fatigue stretching performance, resistant to hydraulic oil corrosion, aging and high-frequency cyclic deformation, stable operation at -30°C to 130°C harsh working environment.
3. Zero Nitrogen Leakage & Stable Impact Power. Every finished diaphragm undergoes 22.0MPa high-pressure air tightness cycling test. Effectively blocks nitrogen-oil mixing leakage, maintains stable accumulator energy storage efficiency, guarantees consistent breaker impact force and avoids weak hammer, intermittent striking failure.
4. Complete Integrated Repair Accessory Set. Equipped with all matching sealing spare parts required for full accumulator overhaul, one-stop maintenance solution, shortens on-site equipment downtime and reduces overall machinery operation maintenance cost.
5. Rigorous Factory Full Inspection. Each batch of piston cup diaphragms passes tensile fatigue test, high-low temperature aging test and high-pressure sealing test before delivery, fully meets OEM manufacturing standards, stable and reliable long-term construction operation performance.
6. Wide Application Scope. Suitable for Etc. DNB30-L hydraulic breakers installed on various heavy-duty construction equipment:
• Medium excavators (Sany 135, XCMG 150, Lovol 140, Liugong 130) • Wheel loaders equipped with breakers • Municipal demolition machinery • Quarry & mine crushing equipment • Road reconstruction concrete breaking equipment • Heavy-duty mobile hydraulic hammer 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.
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
