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 is specially engineered for Epiroc COP1838, COP1838CR and COP1838HE+ hydraulic rock drills. It serves as the core rubber component for high‑pressure accumulators, resisting frequent pressure impact during rock drilling operations.
Manufactured from imported high‑performance HNBR rubber material, this diaphragm delivers outstanding pressure resistance, fatigue resistance, oil resistance and low‑temperature flexibility. It perfectly replaces original Epiroc OEM diaphragms, solves common failures such as accumulator pressure loss, insufficient impact power and abnormal drilling vibration, and extends rock drill service life under continuous heavy‑duty underground mining conditions.
Product Specifications
Item |
Detailed Parameter |
Product Name |
Epiroc 1838 Series Rock Drill Accumulator Diaphragm |
Applicable Model |
COP1838, COP1838CR, COP1838HE+ Hydraulic Rock Drill |
Compatible Series |
Epiroc COP1838 Underground Rock Drill Series |
Main Material |
Imported High‑performance HNBR Rubber |
Max Working Pressure |
28MPa |
Working Temperature |
-35°C ~ 110°C |
Kit Contents |
Accumulator rubber diaphragm (Bowl‑shaped rubber membrane) |
Cross Reference OEM No. |
3115182201, 3115192602 |
Net Weight |
Approximately 0.75kg |
Applicable System |
Rock drill nitrogen accumulator system |
Warranty |
12 Months |
Key Selling Points
1. 100% Exact OEM Replacement.
Fully compatible with original Epiroc COP1838, 1838CR, 1838HE+ hydraulic rock drills. Matches OEM part numbers 3115182201 and 3115192602. Direct installation without any modification required.
2. Premium Imported HNBR Rubber Material.
Adopts high‑grade imported HNBR as raw material. Excellent anti‑fatigue performance for frequent high‑pressure impact cycles; stable performance under temperature range of ‑35°C to 110°C, good resistance to hydraulic oil aging.
3. Stable Pressure Output & Anti‑Fatigue Durability.
Each diaphragm is tested under 28MPa cyclic impact pressure. Effectively prevents nitrogen leakage from accumulators, maintains stable impact energy, avoids weak drilling power and abnormal machine vibration.
4. Reduce Equipment Downtime & Maintenance Cost.
Critical wearing spare part for rock drill accumulator service. Quick‑change component for on‑site overhaul, shorten repair time and lower total operating cost of mining equipment.
5. Strict Factory Quality Control.
Every finished diaphragm undergoes fatigue cycle test, air tightness test and hardness inspection before delivery. Meets OEM specification standards to guarantee reliable long‑term underground working performance.
6. Application Scope.
Suitable for Epiroc 1838 series rock drills equipped on various underground heavy‑duty mining equipment:
• Underground mining drill rigs & tunneling jumbos
• Single‑boom and multi‑boom rock drilling trolleys
• Hard‑rock tunneling machinery
• Underground excavation and drift mining equipment
• Hydraulic drilling systems for mine roadway construction
• Heavy‑duty mobile underground 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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