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 accumulator diaphragm (cup seal) is engineered for Sandvik HL700, HL710, HL800 series hydraulic rock drills. It acts as the core isolating component inside the accumulator, separating high‑pressure nitrogen and hydraulic oil. Manufactured from imported reinforced neoprene and high‑strength rubber compound, it delivers outstanding fatigue resistance, oil resistance and pressure‑bearing performance. It perfectly replaces original Sandvik OEM diaphragm, resolves common failures such as nitrogen leakage, insufficient percussion power and unstable drilling output, and extends rock drill service life under continuous high‑frequency heavy‑duty mining operation。
Product Specifications
Item |
Detailed Parameter |
Product Name |
Sandvik HL700/HL710/HL800 Rock Drill Accumulator Diaphragm (Cup Seal) |
Applicable Model |
HL700, HL710, HL800 / HL800T Hydraulic Rock Drill |
Compatible Series |
Sandvik HL Series Top‑hammer Rock Drill |
Main Material |
Imported Reinforced Neoprene Rubber Compound |
Max Working Pressure |
25MPa |
Working Temperature |
-25°C ~ 110°C |
Kit Contents |
Accumulator diaphragm cup seal (single unit) |
Cross Reference OEM No. |
152‑357‑98 / 15235798 |
Net Weight |
Approximately 0.85kg |
Applicable System |
Rock drill accumulator nitrogen‑hydraulic isolation system |
Warranty |
12 Months |
Key Selling Points
1. 100% Exact OEM Replacement
Fully dimensionally compatible with original Sandvik HL700 / HL710 / HL800 rock drill accumulator housing, matches OEM part number 15235798. No modification required for direct field installation.
2. Premium Reinforced Rubber Raw Material
Adopts imported high‑strength neoprene formula with special vulcanization craft. Excellent anti‑fatigue performance for millions‑cycle high‑frequency deformation, resistant to hydraulic‑oil swelling, aging and cracking, stable working within ‑25°C ~110°C harsh mining environment.
3. Reliable Gas‑oil Isolation & Stable Percussion Performance
Strictly pressure‑cycling tested under 25MPa working pressure. Effectively blocks nitrogen leakage and hydraulic‑oil cross‑mixing, maintains constant accumulator pre‑charge pressure, guarantees steady impact energy and consistent drilling efficiency, avoids rock drill weak‑hit downtime failure。
4. Optimized Structural Fatigue Resistance
Precision moulded integrated cup‑shaped diaphragm structure. Uniform stress distribution during repeated stretching‑rebound movement, greatly reduces risk of tearing and early failure under continuous high‑frequency percussion working condition.
5. Strict Factory Quality Control
Every diaphragm undergoes air‑tightness test, pressure cycle fatigue test and ageing inspection before delivery. Conforms to OEM dimensional and performance standards, ensures dependable long‑term underground & surface mining performance.
6. Application Scope
Specially matched for Sandvik HL700/HL710/HL800 series hydraulic rock drills on various heavy‑duty mining & tunneling equipment:
• Underground long‑hole drilling rigs
• Surface drill jumbos
• Metal mine production drifts
• Tunnel excavation & bolting rigs
• Hard rock blasting drilling projects
• 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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