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 replacement cup and diaphragm is specially developed for Sandvik HL850S (S14BD /15BD) hydraulic rock drill. It is a core vulnerable component for accumulator, including high‑performance rubber cup and nitrogen‑isolating diaphragm for drill overhaul service.
Manufactured with imported high‑grade HNBR and FKM fluororubber composite material, this part delivers outstanding pressure‑fatigue resistance, oil resistance and anti‑aging performance. It is a direct substitute for original Sandvik spare parts, effectively solving common failures such as nitrogen leakage, insufficient impact power and unstable drilling performance, extending service life of rock drill under continuous high‑frequency impact mining conditions。
Product Specifications
Item |
Detailed Parameter |
Product Name |
Sandvik HL850S Rock Drill Cup & Diaphragm |
Applicable Model |
HL850S (S14BD /15BD) |
Compatible Series |
Sandvik HL‑Series Hydraulic Rock Drill |
Main Material |
Imported HNBR / FKM Fluororubber Composite |
Max Working Pressure |
42MPa |
Working Temperature |
-25°C ~ 130°C |
Kit Contents |
Pressure‑resistant rubber cup, accumulator nitrogen‑isolating diaphragm |
Cross Reference OEM No. |
04114808, 86634003 |
Net Weight |
Approximately 0.85kg |
Applicable System |
Hydraulic accumulator nitrogen‑oil isolation system for rock drill |
Warranty |
12 Months |
Key Selling Points
1. 100% Exact OEM Replacement.
Fully compatible with original Sandvik HL850S (S14BD/15BD) hydraulic rock drills. Matches OEM part numbers 04114808 and 86634003. Direct installation without any modification.
2. Premium Imported Composite Rubber Material.
Core cup and diaphragm adopt high‑performance HNBR‑FKM composite rubber. Features anti‑fatigue, oil‑proof and ageing‑resistant properties, operates reliably under‑25°C to 130°C with millions‑cycle high‑frequency impact load.
3. Zero Nitrogen Leakage & Anti‑Fatigue Durability.
Every component passes strict 42MPa pressure‑cycling fatigue test. Prevents nitrogen‑hydraulic‑oil mixing and gas leakage, maintains stable impact energy and consistent rock drilling efficiency. Avoid drill failure caused by diaphragm rupture.
4. Purpose‑Built Vulnerable Repair Parts.
Complete cup‑diaphragm combination for accumulator overhaul. One‑stop spare parts shorten on‑site maintenance time and reduce equipment downtime & operation cost.
5. Strict Factory Quality Control.
Each cup and diaphragm undergoes air tightness, pressure cycle and accelerated ageing tests before delivery. Meets OEM specification for stable long‑term performance in harsh underground mining environment.
6. Application Scope.
Suitable for Sandvik HL850S(S14BD/15BD) rock drill mounted on multiple heavy‑duty mining & tunneling equipment:
• Underground mine drilling jumbos
• Tunnel excavation drill rigs
• Bolter drilling equipment
• Metallurgical mine development machinery
• Hard‑rock production drilling rigs
• Underground hydraulic rock‑drilling systems
• Heavy‑duty mobile mining machinery
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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