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 diaphragm and cup seal is professionally engineered for Atlas Copco COP1238 hydraulic rock drill, a mainstream heavy-duty underground rock drill of COP series widely used in mine tunneling, quarry mining and underground engineering hydraulic systems. The complete set includes accumulator energy storage diaphragm and hydraulic piston cup seal, fully supporting full overhaul and daily maintenance of COP1238 rock drill.
Adopting fabric-reinforced NBR nitrile rubber and wear-resistant PU polyurethane as core raw materials, this diaphragm & cup seal boasts excellent nitrogen resistance, anti-high-frequency impact, wear resistance and anti-aging performance, which can directly replace original Atlas Copco sealing spare parts. It effectively solves common faults such as accumulator nitrogen leakage, cylinder internal oil leakage and system pressure attenuation, greatly extending the service life of COP1238 rock drill under long-time high-frequency impact, intense vibration and dusty harsh underground working conditions.
Product Specifications
Item |
Detailed Parameter |
Product Name |
Atlas Copco COP1238 Hydraulic Rock Drill Diaphragm & Cup Seal |
Applicable Model |
COP1238 Underground Hydraulic Rock Drill |
Compatible COP Series |
COP1032, COP1238, COP1440, COP1638, COP1838 rock drill series |
Main Material |
Fabric Reinforced NBR Diaphragm + High Wear-Resistant PU Cup Seal |
Max Working Pressure |
28MPa (280bar), Peak Pressure: 33MPa (330bar) |
Working Temperature |
-40°C ~ 125°C |
Kit Composition |
Accumulator energy storage diaphragm, hydraulic reciprocating piston cup seal |
Cross Reference OEM No. |
(To be filled with actual OEM numbers) |
Net Weight |
Approximately 0.41kg |
Applicable System |
Rock drill nitrogen accumulator system, hydraulic cylinder reciprocating sealing system |
Warranty |
12 Months |
Certification |
ISO9001 Quality Management System Certified |
Key Selling Points
1. 100% Exact OEM Replacement
Fully compatible with original Atlas Copco COP1238 rock drill, the size and installation outline are precisely matched with original factory standard part numbers without cutting, grinding or secondary modification. It can be quickly assembled for daily maintenance, underground overhaul and emergency field repair, effectively shortening equipment downtime and reducing labor maintenance costs.
2. Premium Composite Special Material for Stable Sealing in All Working Conditions
The energy storage diaphragm adopts fabric-reinforced nitrile substrate with strong tear resistance and resilience, and is not easy to crack after tens of thousands of high-frequency impact cycles; the piston cup seal is made of high-hardness polyurethane with outstanding anti-extrusion and anti-wear performance. The material resists nitrogen aging, hydraulic oil corrosion and fatigue deformation, and can continuously maintain stable sealing elasticity from -40°C alpine mining to 125°C high-temperature underground operation.
3. High Pressure & Impact Resistant, No Pressure Relief, Oil or Gas Leakage
Both diaphragm and cup seal pass strict 28MPa 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 block, stabilizing hydraulic impact pressure and ensuring constant striking force of COP1238 rock drill under heavy rock breaking, continuous impact and strong vibration working conditions.
4. Independently Developed for Special Sealing Positions, Convenient Maintenance Management
Custom molded for the accumulator and piston sealing positions of COP1238, the curved bowl structure perfectly fits the cavity contour. Single independent packaging simplifies spare parts inventory classification, shortens the overall maintenance cycle and cuts daily equipment operation and maintenance costs.
5. Strict Factory Multiple Inspections, Quality Equivalent to Original Parts
Each set of diaphragm and cup seal undergoes three tests before delivery: air tightness leak detection, high-pressure durability and cyclic impact aging. All performance indicators meet the original factory technical standards, providing long-term stable operation guarantee for mine hydraulic rock drilling equipment.
6. Wide Application Scenarios Across Multiple Industries
Specially matched for Atlas Copco COP1238 hydraulic rock drill, suitable for various heavy mining and underground construction scenarios:
• Mining Industry: Underground roadway excavation, ore drilling, metal mine and stone quarry mining
• Tunnel Engineering: Railway/highway tunnel rock drilling, underground mine driving
• Water Conservancy Engineering: Hydropower underground cavern excavation, dam foundation rock trimming
• Municipal Underground Works: Underground pipe gallery excavation, foundation rock breaking
• Underground Emergency Works: Slope reinforcement drilling, rock splitting, hard rock tunneling
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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