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) is specially customized for INAN Makina MTB150 & MTB170 hydraulic rock breakers, core energy storage sealing spare parts widely equipped on medium excavators, demolition and mining machinery. It acts as an isolation barrier between high-pressure nitrogen chamber and hydraulic oil circuit, solving nitrogen leakage, insufficient impact force, hammer power attenuation and frequent overheating failures.
Produced with imported modified HNBR & reinforced fluororubber composite material, the diaphragm features outstanding fatigue resistance, oil resistance, high-pressure resistance and low-temperature flexibility. It is a direct OEM replacement for original MTB breaker diaphragms, stabilizing continuous high-frequency impact operation and greatly extending breaker service life under long-time heavy load working conditions.
Item |
Detailed Parameter |
Product Name |
MTB150 MTB170 Hydraulic Breaker Accumulator Diaphragm (Piston Cup) |
Applicable Model |
MTB150, MTB170 Rock Breaker |
Compatible Series |
INAN Makina MTB Medium Hydraulic Breaker Series |
Main Material |
Imported Modified HNBR + FKM Fluororubber Reinforced Composite |
Max Bearing Pressure |
21MPa |
Working Temperature |
-30°C ~ 125°C |
Product Composition |
Integral thickened diaphragm, built-in fiber reinforcement layer |
Cross Reference OEM No. |
MTB150-DIA, MTB170-DIA, 45B0134A17, 45B0134A19 |
Single Net Weight |
Approximately 0.42kg |
Applicable System |
Breaker nitrogen accumulator energy storage system |
Warranty |
12 Months |
Fully fit INAN Makina MTB150 and MTB170 hydraulic breakers, consistent with OEM part numbers MTB150-DIA, MTB170-DIA, 45B0134A17, 45B0134A19. No cutting, grinding or other modification required, one-step direct installation.
Adopts high-performance HNBR base rubber with embedded fiber reinforcement layer and FKM surface coating. Resists hydraulic oil corrosion, high temperature aging and low-temperature hardening; maintains stable elasticity under -30°C~125°C complex construction environment.
Passed 21MPa long-cycle high-pressure fatigue test. Effectively blocks nitrogen gas leakage and hydraulic oil mixing, maintains stable accumulator energy storage efficiency, ensures consistent impact force without power drop during continuous breaking work.
Integral vulcanization molding process without bonding gaps. Avoids local cracking, bulging and premature rupture caused by frequent stretching deformation, reduces downtime and frequent replacement costs of breakers.
Every diaphragm undergoes air tightness test, high-pressure fatigue test and high-low temperature aging test before delivery, fully reaching OEM manufacturing standards to guarantee reliable performance in mining, demolition and other severe working scenarios.
Suitable for excavator-mounted MTB150 / MTB170 hydraulic rock breakers used in multiple heavy-duty scenarios:
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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