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 heavy-duty accumulator diaphragm and piston cup seal is professionally developed for Atlas Copco HB2000 large hydraulic rock breaker, the flagship heavy breaking equipment for 22–38 ton excavators, widely applied in open pit mining, quarry rock crushing, large concrete demolition and underground tunneling. The product includes energy storage diaphragm for nitrogen accumulator and hydraulic piston cup seal, fully meeting complete overhaul and routine maintenance demands of HB2000 breaker.
Adopting thickened fabric-reinforced NBR rubber and high-load wear-resistant PU polyurethane as core raw materials, this set of sealing parts features outstanding nitrogen permeation resistance, ultra-high pressure resistance, anti-fatigue impact and anti-aging performance, serving as a perfect direct replacement for original Atlas Copco OEM spare parts. It thoroughly solves frequent failures such as accumulator nitrogen leakage, cylinder internal oil seepage, hydraulic pressure attenuation and unstable striking force, greatly extending the service life of HB2000 breaker under long-term heavy-load, high-frequency striking, strong vibration and dusty severe working conditions.
Product Specifications
Item |
Detailed Parameter |
Product Name |
Atlas Copco HB2000 Hydraulic Breaker Diaphragm & Cup Seal |
Applicable Model |
HB2000 Heavy Hydraulic Rock Breaker |
Compatible HB Series |
HB2000, HB2200, HB2500, HB3000 large mining breakers |
Main Material |
Thickened Fabric Reinforced NBR Diaphragm + High Hardness Wear-resistant PU Cup Seal |
Max Working Hydraulic Pressure |
18MPa (180bar), Peak Instant Pressure 22MPa (220bar) |
Nitrogen Working Pressure |
1.23–1.48MPa (12.3–14.8bar) |
Working Temperature |
-35℃ ~ 120℃ |
Product Composition |
Accumulator energy storage diaphragm, hydraulic reciprocating piston cup seal |
Cross Reference OEM No. |
3361850422 |
Net Weight |
Approximately 0.75kg |
Applicable System |
HB2000 nitrogen accumulator energy storage system, main cylinder reciprocating sealing system |
Warranty |
12 Months |
Certification |
ISO9001 Quality Management System Certified |
Key Selling Points
1. 100% OEM Standard Dimension, Direct Installation Without Modification
Fully matched with original HB2000 breaker cavity size and installation contour, consistent with OEM part number standards. No cutting, grinding or secondary modification required. Suitable for daily maintenance, mine field overhaul and emergency on-site repair, effectively cutting equipment downtime and manual maintenance cost.
2. Thickened Composite High-Strength Sealing Material
The accumulator diaphragm adopts multi-layer fabric-clamped nitrile rubber with ultra-high tear resistance, capable of millions of cyclic impacts without cracking or delamination; piston cup seal uses high-density cast PU material with strong anti-extrusion, wear and hydraulic oil corrosion resistance. Stable sealing elasticity maintained continuously from -35℃ low-temperature mine to 120℃ high-temperature underground construction, resisting nitrogen aging and long-period fatigue deformation.
3. Ultra High Pressure & Heavy Impact Resistance, Stable System Pressure
All sealing components pass strict 22MPa peak pressure and long-cycle heavy impact simulation tests. The arc bowl-shaped structure fits the inner cavity tightly to eliminate nitrogen leakage and internal oil leakage completely. Stabilize hydraulic striking pressure, guarantee constant powerful impact force of HB2000 breaker during hard rock mining and large concrete demolition heavy-load operation.
4. Dedicated Custom Structure for HB2000 Large Breaker
Independently molded targeting HB2000 large accumulator and piston sealing position, optimized thickened edge design to avoid edge turn-up and failure under high pressure. Single independent vacuum packaging, easy spare parts classification and inventory management, shorten overall repair cycle and reduce long-term equipment operation cost.
5. Multi-Round Strict Factory Inspection Before Delivery
Each diaphragm and cup seal undergoes air tightness nitrogen leakage test, high-pressure durability test and cyclic impact aging test off production line. All performance indicators reach original factory technical standards, providing long-term stable operation guarantee for heavy mining and engineering breaking equipment.
6. Wide Application Scenarios for Heavy-Duty Construction
Specially matched for Atlas Copco HB2000 hydraulic breaker, widely used in all kinds of large-scale heavy engineering and mining projects:
• Open pit mining: Primary rock excavation, ore secondary crushing, stone quarry bulk rock breaking
• Municipal demolition: Mass reinforced concrete structure dismantling, road foundation hard rock excavation
• Tunnel & underground engineering: Underground roadway tunneling, mine drift rock breaking
• Water conservancy & hydropower: Dam foundation rock trimming, mountain channel excavation
• Emergency rescue: Large rock landslide splitting, frozen soil hard rock crushing
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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