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]
Product Overview
This high-performance accumulator diaphragm and piston cup seal is professionally engineered for Atlas Copco MB1700 heavy-duty hydraulic rock breaker, the core mid-large model of MB series hydraulic demolition hammers widely matched with 30–45 ton excavators for mining and large infrastructure hydraulic systems. The product consists of nitrogen storage diaphragm and hydraulic reciprocating piston cup seal, fully supporting full overhaul and daily maintenance of MB1700 breakers.
Adopting fabric-reinforced HNBR rubber and high wear-resistant TPU polyurethane as core materials, this diaphragm & cup seal delivers outstanding nitrogen penetration resistance, high-frequency impact resistance, abrasion resistance and anti-fatigue aging performance. It acts as a reliable direct replacement for original Atlas Copco sealing spare parts. The product thoroughly solves common faults such as accumulator nitrogen leakage, cylinder internal oil leakage and hydraulic pressure drop, greatly extending the service life of MB1700 breaker under long-time heavy-load striking, severe vibration and dusty harsh construction environments.
Product Specifications
Item |
Detailed Parameter |
Product Name |
Atlas Copco MB1700 Hydraulic Breaker Diaphragm & Cup Seal |
Applicable Model |
MB1700 / MB1700E Heavy-Duty Hydraulic Rock Breaker |
Compatible MB Series |
MB750, MB1000, MB1200, MB1500, MB1700 large hydraulic hammer series |
Main Material |
Fabric Reinforced HNBR Diaphragm + High Hardness TPU Cup Seal |
Max Working Pressure |
32MPa (320bar), Peak Impact Pressure: 38MPa (380bar) |
Working Temperature |
-35°C ~ 130°C |
Product Composition |
Accumulator energy storage diaphragm, hydraulic piston reciprocating cup seal |
Cross Reference OEM No. |
3363034311 |
Net Weight |
Approximately 0.45kg |
Applicable System |
Hydraulic breaker nitrogen accumulator system, breaker cylinder reciprocating sealing system |
Warranty |
12 Months |
Certification |
ISO9001 Quality Management System Certified |
Key Selling Points
1. 100% OEM Standard Size, Direct Installation Without Modification
Fully matched with original Atlas Copco MB1700 hydraulic breaker, consistent with OEM dimensions and part numbers. No cutting, grinding or secondary modification required. Suitable for daily maintenance, field complete machine overhaul and emergency on-site repair, effectively shortening equipment downtime and reducing labor maintenance costs.
2. Premium Composite Sealing Materials, Stable Sealing In All Working Conditions
The energy storage diaphragm uses fabric-reinforced hydrogenated nitrile rubber with excellent tear resistance and elastic recovery, resisting cracking after tens of thousands of high-frequency impact cycles; the piston cup seal adopts imported high-hardness TPU material with strong anti-extrusion and wear resistance. The material resists nitrogen aging, hydraulic oil corrosion and fatigue deformation, maintaining stable elastic sealing performance continuously from -35°C alpine mining to 130°C high-temperature underground operation.
3. High Pressure & Anti-Vibration Performance, Eliminate Air & Oil Leakage
All sealing components pass strict 32MPa high-pressure durability and long-cycle impact simulation tests. The curved bowl-shaped structure fits the inner cavity tightly, completely eliminating nitrogen leakage of accumulator and internal oil seepage of cylinder. Stabilize hydraulic striking pressure, ensure constant hitting force of MB1700 breaker under heavy rock breaking, continuous impact and strong vibration working conditions.
4. Special Customized Structure For MB1700, Convenient Inventory & Maintenance
Independently developed and molded for MB1700 accumulator and piston sealing positions, perfectly fitting the cavity contour. Single independent packaging simplifies spare parts classification management, shortens overall repair cycle and cuts daily operation and maintenance costs of construction machinery.
5. Multi-Stage Factory Inspection, Quality Equivalent To Original Parts
Every set of diaphragm and cup seal undergoes air tightness test, high-pressure durability test and cyclic impact aging test before delivery. All performance indicators meet Atlas Copco original factory technical standards, providing long-term stable operation guarantee for mining and large engineering hydraulic breaking equipment.
6. Wide Application Scenarios For Heavy-Duty Construction
Specially matched for Atlas Copco MB1700 hydraulic breaker, widely applied in various heavy engineering and mining fields:
• Open-pit Mining: Hard rock quarrying, ore blasting pretreatment, mountain massif excavation
• Large Municipal Demolition: Thick concrete road breaking, bridge dismantling, large building demolition
• Highway & Tunnel Engineering: Mountain rock excavation, highway foundation hard rock crushing, tunnel surrounding rock breaking
• Water Conservancy Project: Hydropower dam foundation trimming, reservoir rock excavation
• Emergency Rescue: Landslide rock splitting, frozen soil breaking, slope reinforcement excavation
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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