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 specially developed for Atlas Copco SB450 medium hydraulic breaker, a mainstream mid-size hydraulic hammer of the SB series widely matched with 6–10 ton excavators for municipal demolition, stone mining and road engineering construction. The product includes nitrogen accumulator energy storage diaphragm and hydraulic impact piston cup seal, fully supporting full overhaul and routine maintenance of SB450 hydraulic breakers.
Adopting fabric-reinforced HNBR rubber and high wear-resistant TPU polyurethane as core raw materials, this set of sealing parts features excellent nitrogen permeation resistance, high-frequency impact resistance, wear resistance and anti-fatigue aging performance, serving as a perfect direct replacement for original Atlas Copco OEM sealing components. It thoroughly solves common failures such as accumulator nitrogen leakage, cylinder internal oil leakage and impact pressure attenuation, greatly extending the service life of SB450 breakers under long-time heavy load, high-frequency striking, severe vibration and dusty harsh working conditions.
Product Specifications
Item |
Detailed Parameter |
Product Name |
Atlas Copco SB450 Hydraulic Breaker Diaphragm & Cup Seal |
Applicable Model |
SB450 Medium Hydraulic Breaker |
Compatible SB Series |
SB300, SB450, SB452, SB702, SBC800, SBC850 hydraulic hammer |
Main Material |
Fabric Reinforced HNBR Diaphragm + Wear-resistant TPU Cup Seal |
Max Working Pressure |
32MPa (320bar), Peak Pressure: 38MPa (380bar) |
Working Temperature |
-35°C ~ 120°C |
Product Composition |
Accumulator energy storage diaphragm, hydraulic reciprocating piston cup seal |
Cross Reference OEM No. |
3315268790 / 3315017300 |
Diaphragm Size |
170*30mm |
Chisel Diameter Matching |
95mm |
Net Weight |
Approximately 0.45kg |
Applicable System |
Hydraulic breaker nitrogen accumulator system, impact 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 Atlas Copco SB450 breaker in overall size, installation radian and part number standard. No cutting, grinding or secondary modification required. Suitable for daily maintenance, field overhaul and emergency site repair, effectively shortening equipment downtime and cutting labor maintenance costs.
2. Premium Composite Sealing Material, Stable Sealing in Full Temperature Range
The accumulator diaphragm adopts fabric-reinforced HNBR with ultra-high tear resistance and elastic recovery, resisting cracking after millions of cyclic impacts; piston cup seal uses high-hardness TPU with outstanding anti-extrusion and wear resistance. The materials resist nitrogen aging, hydraulic oil corrosion and fatigue deformation, maintaining stable sealing elasticity continuously from -35°C alpine construction to 120°C high-temperature underground mining environments.
3. Excellent High Pressure & Anti-Vibration Performance, Eliminate Leakage Completely
All diaphragm and cup seal parts pass strict 32MPa high-pressure durability and long-cycle impact simulation tests. The curved bowl-shaped structure fits the breaker inner cavity tightly, completely stopping nitrogen leakage of accumulator and internal cylinder oil leakage, stabilizing hydraulic impact pressure, and guaranteeing constant striking force of SB450 hammer under heavy rock breaking, continuous impact and strong vibration working conditions.
4. Special Customized Structure for SB450, Convenient Inventory & Maintenance
Independently molded according to the internal cavity structure of SB450 accumulator and piston sealing position, with perfect surface fitting. Single independent packaging simplifies spare parts classification and inventory management, shortens overall repair cycle and reduces daily operation and maintenance costs of excavator attachments.
5. Multi-Stage Factory Inspection, Quality Consistent With Original Standard
Every diaphragm and cup seal undergoes air tightness leak test, high-pressure durability test and cyclic impact aging test before delivery. All performance indicators reach the original factory technical standards, providing long-term stable operation guarantee for engineering hydraulic breaking equipment.
6. Wide Application Scenarios for Mid-Size Excavator Supporting Hammer
Specially matched for Atlas Copco SB450 hydraulic breaker, widely applied to various medium-duty construction and mining projects:
• Municipal Demolition: Reinforced concrete breaking, old building dismantling, road surface renovation, pipeline trench excavation
• Quarry & Mining: Medium-hard rock crushing, ore block splitting, open pit stone sorting
• Road & Bridge Engineering: Subgrade hard rock excavation, tunnel entry rock breaking, slope trimming
• Water Conservancy Construction: Reservoir foundation clearing, river channel rock excavation
• Emergency Rescue: Frozen soil breaking, dangerous rock removal, landslide treatment
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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