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 DP4200 heavy-duty hydraulic rock drifter, a core large impact drifter used in underground tunneling, mining and hard rock excavation. The complete set includes nitrogen accumulator diaphragm and hydraulic impact piston cup seal, fully meeting full overhaul and daily maintenance requirements of DP4200 drifter.
Adopting thickened fabric-reinforced NBR nitrile rubber and high toughness wear-resistant PU polyurethane as core raw materials, this sealing assembly features outstanding nitrogen permeation resistance, anti-fatigue impact, high wear resistance and long anti-aging service life. It can directly replace original Atlas Copco OEM sealing spare parts. The product thoroughly solves typical faults such as accumulator nitrogen leakage, cylinder internal hydraulic oil leakage, impact pressure attenuation and unstable striking power, greatly extending the service life of DP4200 drifter under long-term ultra-high frequency impact, strong vibration and heavy dust harsh underground working conditions.
Product Specifications
Item |
Detailed Parameter |
Product Name |
Atlas Copco DP4200 Hydraulic Rock Drifter Diaphragm & Cup Seal |
Applicable Model |
DP4200 Heavy-Duty Hydraulic Drifter |
Compatible Series |
Atlas DP Series Drifter DP3600, DP4200, DP4600 |
Main Material |
Thickened Fabric Reinforced NBR Diaphragm + High Toughness Wear-Resistant PU Cup Seal |
Max Working Pressure |
28MPa (280bar), Instant Peak Pressure: 33MPa (330bar) |
Working Temperature |
-40°C ~ 130°C |
Product Composition |
Nitrogen accumulator energy storage diaphragm, hydraulic impact reciprocating piston cup seal |
Cross Reference OEM No. |
(Fill in actual original part number) |
Net Weight |
Approximately 0.45kg |
Applicable System |
Drifter nitrogen accumulator energy storage system, impact cylinder reciprocating sealing system |
Warranty |
12 Months |
Certification |
ISO9001 Quality Management System Certified |
Key Selling Points
1. 100% OEM Standard Size Matching, Direct Installation Without Modification
Fully compatible with original Atlas DP4200 hydraulic drifter, all dimensional contour consistent with OEM standard parts, no cutting, grinding or secondary modification needed. Suitable for daily maintenance, underground full machine overhaul and emergency field repair, effectively shorten equipment downtime and reduce labor maintenance cost.
2. Thickened Composite Sealing Material, Stable Sealing In Full Temperature Range
Energy storage diaphragm adopts multi-layer fabric clamped NBR, super tear resistance, strong elastic recovery, no cracking after millions of high-frequency impact cycles; piston cup seal uses high-hardness reinforced PU material, excellent anti-extrusion and anti-wear property. The material resists nitrogen aging, hydraulic oil corrosion and long-term fatigue deformation, maintains stable sealing elasticity continuously from -40°C alpine mining to 130°C high-temperature deep underground operation environment.
3. Ultra-High Pressure & Anti-Impact Performance, Eliminate Pressure Loss & Leakage
All sealing components pass strict 28MPa high-pressure endurance and long-cycle impact simulation tests. The curved bowl-shaped structure fits the inner cavity tightly, completely block nitrogen leakage of accumulator and internal oil leakage of impact cylinder, stabilize hydraulic impact pressure, guarantee constant striking power of DP4200 drifter under heavy hard rock drilling, continuous high-frequency impact and strong vibration working conditions.
4. Special Customized Structure For DP4200, Easy Spare Parts Management
Independently molded according to DP4200 accumulator and piston sealing cavity size, precise curved surface fit; single independent sealed packaging, simplify spare parts inventory classification, shorten overall machine repair cycle and reduce daily equipment operation and maintenance cost.
5. Multi-Round Strict Factory Inspection, Quality Reaches OEM Standard
Each set of diaphragm and cup seal undergoes air tightness leakage test, high-pressure durability test and cyclic impact aging test before delivery. All performance indicators meet original factory technical standards, providing long-term stable operation guarantee for underground mining and tunnel engineering hydraulic drilling equipment.
6. Wide Application Range For Heavy Rock Drilling Scenarios
Specially matched for Atlas Copco DP4200 large hydraulic drifter, widely applied in heavy-duty mining and tunnel construction fields:
• Underground Metal & Nonmetal Mine: Roadway tunneling, deep hole blasting drilling, ore body stoping drilling
• Tunnel Engineering: Highway/railway mountain tunnel excavation, hard rock rapid drilling
• Hydropower Project: Underground powerhouse rock drilling, diversion tunnel construction
• Municipal Large Underground Engineering: Foundation pit hard rock breaking, deep foundation anchor hole drilling
• Quarry & Open Pit Mining: Large-scale rock blasting hole construction
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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