Diaphragm 04114808 High-Pressure Hydraulic Isolation for HL300/438/500/500s/510/850s Drifters
- Part Number: 04114808
- Pressure Rating: 200 bar (continuous operating pressure), 250 bar (burst pressure)
- Temperature Range: -40°C to +120°C (NBR material standard)
- Sealing Surface Finish: Ra ≤0.8μm (ISO 1302 precision surface treatment)
- Compatibility: Direct fit for HL300, HL438, HL500, HL500s, HL510, and HL850s hydraulic drifter models
- Weight: (net weight)
High-Pressure Hydraulic Diaphragm for Drifter SystemsEngineered to provide reliable fluid isolation and pressure regulation, this diaphragm is optimized for high-demand underground drilling applications across multiple drifter models.
Technical Specifications & DesignConstructed from ISO 6194-1 compliant NBR compound with polyester fabric reinforcement, the diaphragm offers a balanced combination of elasticity and mechanical strength. The three-ply composite structure resists deformation under 200 bar continuous pressure, while the precision-molded sealing edge (Ra ≤0.8μm surface finish per ISO 1302) ensures airtight closure in high-vibration environments.
Performance Advantages
- Pressure Stability: Maintains zero leakage at 110% of rated pressure (220 bar) during 100+ hours of cyclic testing, meeting ISO 6020/1 hydraulic component standards.
- Environmental Resistance:
- Temperature: Operates reliably from -40°C (freezing mine shafts) to +120°C (high-heat tunneling environments).
- Chemicals: Resistant to mineral oil, water-glycol fluids, and common drilling additives (pH 4–10), extending service life by 30% compared to non-reinforced diaphragms.
- Installation Efficiency: M20 x 1.5 threaded ports (ISO 7-1 compliant) enable direct replacement on HL300/438/500/500s/510/850s models, reducing downtime by 40% during maintenance.
Applications
- Underground Mining:
- Ideal for isolating high-pressure circuits in drill feed systems of HL500/850s models during deep-hole drilling (60+ meters depth) in hard-rock mines.
- Prevents cross-contamination between hydraulic and lubrication systems in sulfide ore environments.
- Construction Tunneling:
- Used in HL300/438 drifters for soft-ground excavation, absorbing pressure surges caused by variable soil conditions (clay, sand, gravel).
- Protects pumps and valves from abrasive particle ingress in urban tunneling projects.
- Industrial Maintenance:
- A certified replacement part for worn diaphragms in legacy HL300/500s models, restoring factory-spec performance without modification.
- Compatibility confirmed with OEM hydraulic manifolds across the HL series.
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