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‑diaphragm is specially engineered for Sandvik HE119 and HE122 hydraulic rock drifters. It serves as the core accumulator sealing component for impact energy buffering. The product adopts high‑strength fabric‑reinforced FKM composite rubber material, delivering outstanding anti‑fatigue, impact‑resistant, oil‑resistant and wear‑resistant performance. It perfectly replaces original Sandvik OEM diaphragms, solves common failures such as accumulator pressure loss, diaphragm rupture and internal leakage, stabilizes drilling impact performance and extends service life under continuous high‑intensity rock‑drilling working conditions。
Product Specifications
Item |
Detailed Parameter |
Product Name |
Sandvik HE119 / HE122 Rock Drill Cup‑Diaphragm |
Applicable Model |
HE119, HE122 Hydraulic Rock Drifter |
Compatible Series |
Sandvik HE‑Series Top Hammer Drifter |
Main Material |
Fabric‑Reinforced Imported FKM Composite Rubber |
Max Working Pressure |
28MPa |
Working Temperature |
-25°C ~ 110°C |
Kit Contents |
Cup‑diaphragm (single piece, accumulator core sealing part) |
Cross Reference OEM No. |
14079818, 14080178 |
Net Weight |
Approximately 0.85kg |
Applicable System |
Hydraulic accumulator system for rock drill impact circuit |
Warranty |
12 Months |
Key Selling Points
1. 100% Exact OEM Replacement.
Fully dimensionally compatible with original Sandvik HE119 / HE122 rock drifters, matches OEM part numbers 14079818 and 14080178. No extra machining required for direct field installation。
2. High‑Strength Fabric‑Reinforced Diaphragm Material.
Core sealing body uses fabric‑reinforced high‑performance FKM composite rubber. Excellent fatigue‑resistance against frequent impact pulsation, oil‑proof and aging‑resistant, stable operation within‑25°C ~ 110°C working range。
3. Anti‑Burst & Stable Pressure Holding Performance.
Each diaphragm undergoes pulsating fatigue and burst‑pressure testing up to 28 MPa. Effectively prevents accumulator pressure decay and sudden rupture, maintains stable impact power output of rock drill, avoids drilling‑power drop and abnormal machine shutdown.
4. Precision‑Molded Single‑Unit Core Spare Part.
Strictly follow original cavity contour design. Optimized transition arc reduces stress concentration under repeated impact load. Easy on‑site replacement, shortens equipment maintenance downtime and lowers mine operating costs.
5. Strict Factory Quality Control.
Every cup‑diaphragm passes pulsation fatigue, pressure‑holding and aging tests before delivery. Meets OEM dimensional and performance standards, guarantees reliable long‑term operation in harsh mining environments.
6. Application Scope.
Specially matched for Sandvik HE119 / HE122 hydraulic rock drifters widely deployed on heavy‑duty drilling equipment：
• Underground mining drill jumbos
• Tunnel excavation drilling rigs
• Bolt‑support drilling trolleys
• Hard‑rock blasting hole drilling equipment
• Hydraulic top‑hammer drilling systems
• High‑duty underground mobile drilling 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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