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 is specially engineered for Etc. DNB30-HIGH hydraulic rock breakers, widely fitted on medium excavators and construction crushing machinery. It acts as the core isolation component inside the breaker nitrogen accumulator, separating hydraulic oil and high-pressure nitrogen perfectly.
Manufactured with imported high-strength PPDI composite rubber and reinforced fiber framework, the diaphragm delivers outstanding fatigue resistance, high temperature resistance and oil aging resistance. It thoroughly solves common faults like nitrogen leakage, unstable impact force and weak striking power caused by damaged original diaphragms, greatly extending continuous working hours of the hydraulic breaker under long-time heavy impact loads.
Item |
Detailed Parameter |
Product Name |
DNB30-HIGH Hydraulic Breaker Accumulator Diaphragm Cup |
Applicable Model |
DNB30-HIGH Medium Hydraulic Rock Breaker |
Compatible Series |
Etc. DNB30 Series Hydraulic Hammer |
Main Material |
Imported PPDI High-Elastic Composite Rubber + Reinforced Fiber Support Layer |
Max Working Pressure |
26.0MPa |
Working Temperature |
-30°C ~ 150°C |
Kit Contents |
Integral diaphragm cup, auxiliary O-rings, installation gaskets, positioning backing rings |
Cross Reference OEM No. |
ETC-DNB30-HIGH, 3061889721 |
Net Weight |
Approximately 0.42kg |
Applicable System |
Hydraulic breaker nitrogen accumulator energy storage system |
Warranty |
12 Months |
Fully dimensionally matched with original Etc. DNB30-HIGH breaker accumulator structure, consistent with OEM part numbers ETC-DNB30-HIGH and 3061889721. No cutting, trimming or modification required for direct plug-and-play installation.
Core diaphragm body adopts high-performance PPDI formula with built-in fiber reinforcement. It features ultra-high rebound elasticity, anti-fatigue stretching, hydraulic oil corrosion resistance and anti-aging performance, stably enduring extreme temperature fluctuations from -30°C to 150°C in mining and demolition scenarios.
All finished products pass strict 26.0MPa high-pressure nitrogen sealing fatigue tests. Effectively isolates oil and nitrogen chambers, eliminates internal air leakage, maintains consistent accumulator energy storage capacity, and guarantees stable striking frequency and impact force without power attenuation.
Comes with full set of supporting sealing fittings needed for one-time accumulator overhaul, including positioning gaskets and auxiliary O-rings. One-piece package simplifies maintenance procedures, shortens machine downtime and reduces overall equipment operating cost.
Every diaphragm cup undergoes air tightness cycling test, high-frequency impact fatigue test and high-temperature aging test before delivery, fully complying with OEM industrial quality standards to ensure long-term reliable operation under harsh construction conditions.
Designed for Etc. DNB30-HIGH hydraulic breakers mounted on multiple heavy-duty construction machines:
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
