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 & leather cup repair kit is specially developed for MTB505 hydraulic rock breakers, widely matched on large excavator demolition and mining machinery. The set contains complete accumulator diaphragm, leather cup, O-rings, gaskets and anti-extrusion backup rings for full accumulator overhaul maintenance.
Adopts imported high-strength fabric-reinforced FKM fluororubber + wear-resistant nitrile leather composite material, featuring outstanding hydraulic oil resistance, high temperature resistance, anti-fatigue and anti-tearing performance. It fully replaces original MTB505 OEM diaphragm & cup parts, solves common faults such as nitrogen leakage, impact power attenuation, frequent pressure drop and breaker insufficient striking force, greatly extending the service life of the breaker under long-term heavy load crushing operation.
Item |
Detailed Parameter |
Product Name |
MTB505 Hydraulic Breaker Accumulator Diaphragm & Cup Seal Kit |
Applicable Model |
MTB505 Large Hydraulic Rock Breaker |
Compatible Series |
MTB 500 Series Hydraulic Hammer |
Main Material |
Fabric-reinforced Imported FKM Fluororubber + Wear-resistant NBR Leather Cup + Reinforced Backup Ring |
Max Working Pressure |
14MPa |
Working Temperature |
-25°C ~ 120°C |
Kit Contents |
Accumulator diaphragm, leather cup, O-rings, sealing gaskets, anti-extrusion backup rings, full overhaul sealing accessories |
Cross Reference OEM No. |
MTB-505, 45B0168A22 |
Net Weight |
Approximately 1.1kg |
Applicable System |
Hydraulic breaker nitrogen accumulator energy storage system |
Warranty |
12 Months |
Fully dimensionally consistent with original MTB505 breaker accumulator parts, matches OEM part numbers MTB-505 and 45B0168A22. Zero modification required for direct installation, perfectly fits the accumulator chamber without air leakage or dislocation.
Core diaphragm adopts multi-layer fabric embedded FKM rubber, leather cup uses oil-immersed wear-resistant nitrile leather. The material resists hydraulic oil corrosion, high-temperature aging and repeated elastic fatigue, stably operates under -25°C ~ 120°C harsh working conditions.
All components pass 14MPa high-pressure nitrogen sealing test. Effectively isolates nitrogen and hydraulic oil, eliminates internal nitrogen leakage and external oil seepage problems, maintains stable accumulator energy storage efficiency, ensures consistent striking frequency and impact energy of the breaker.
Integrates all sealing and wearing parts required for MTB505 accumulator disassembly and maintenance. One set meets full repair demands, avoids repeated procurement of scattered accessories, shortens equipment downtime and reduces overall operation maintenance cost.
Every diaphragm and leather cup undergoes air tightness, high-frequency fatigue impact and high-temperature aging tests before delivery, fully meets OEM production standards, delivers stable and reliable long-term performance in mining and demolition harsh working conditions.
Suitable for MTB505 hydraulic rock breakers equipped on multiple heavy-duty engineering 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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