3115915099 Atlas Copco COP 1838HD Hydraulic Rock Drill Seal Kit

Heavy-Duty Hydraulic Rock Drill Seal Overhaul Kit for Atlas Copco / Epiroc COP 1838HD Drifters | OEM Part: 3115915099

High-Impact Fluid Containment for Underground Mining Drifter Service

The Atlas Copco / Epiroc COP 1838HD hydraulic rock drill delivers intense percussive energy in hard-rock tunneling and underground development drifting. Subjected to thousands of impacts per minute, extreme hydraulic pressure surges, and continuous exposure to quartz dust paste, dynamic seals within the drifter housing undergo extreme mechanical fatigue.

When dynamic seal lips degrade, internal fluid bypasses dampening and impact chambers, leading to a loss in striking force, slower hole drilling times, elevated hydraulic oil temperatures, and fluid weeping past the front shank nose. Overhauling your drifter housing with our 3115915099 Service Kit restores high-pressure chamber isolation, eliminates fluid weeping, and maximizes equipment uptime.

Technical Specifications & System Compatibility

• Brand & System Compatibility: Atlas Copco / Epiroc Mining & Rock Excavation Systems

• Target Machinery Component: Atlas Copco / Epiroc COP 1838HD Hydraulic Rock Drill (Drifter)

• Primary OEM Part Number: 3115915099 (Cross-ref: 3115 9150 99)

• Internal Catalog SKU: 3115915099-AC-1838HD

• Material Science Compound Matrix: Hydrolysis-Resistant TPU + High-Temp Viton (FKM) + Bronze-Filled PTFE + Industrial NBR

• Dynamic Operating Pressure Limit: Engineered for peak shock loads and dynamic holding up to 250+ Bar (3625+ PSI)

• Thermal Endurance Range: -30°C to 120°C (-22°F to 248°F)

• Kit Inclusions: Dynamic Percussion Rod Seals, Dampening U-Cups, Piston Wear Rings, Double-Lip Front Scraper, and High-Temp O-Rings

Key Material Science & Hydraulic Protection Features

• High-Modulus Polyurethane (TPU) U-Cups: Retains dynamic sealing lip memory and radial flexibility under rapid mechanical impact shockwaves without splitting or hardening.

• High-Temp Viton (FKM) Energizers: Maintains static and dynamic seal loading during intense hydraulic fluid heat spikes inside enclosed mine faces.

• Bronze-Filled PTFE Guide Rings: Provides low-friction piston guidance, prevents metal-to-metal scuffing, and stops fluid bypass across internal pressure chambers.

• Severe-Duty Double-Lip Scraper Wiper: Actively strips away quartz dust, rock slurry, and acidic wash-down water before contaminants enter the main hydraulic housing.

Field Service & Rebuild Guidelines for Mine Mechanics

💡 Jobsite Maintenance Tip:

Percussive drifters require strict cleanliness during hydraulic seal overhauls. When rebuilding a COP 1838HD drifter with the 3115915099 kit, thoroughly clean all gland cavities in a clean solvent bath. Inspect the driver bushings and striking bar (shank adapter) contact faces for scoring or ovalization. Installing fresh dynamic seals over grooved bushings will cause premature seal lip cutting and early fluid bypass.

Q&A

• Q: Is part number 3115915099 interchangeable between Atlas Copco and Epiroc COP 1838HD drifters?

  A: Yes. Epiroc is the dedicated mining and rock excavation division formerly operating under Atlas Copco. Part number 3115915099 / 3115 9150 99 matches identical factory specifications across both brand designations for the COP 1838HD rock drill.

• Q: What primary symptoms indicate that a COP 1838HD rock drill requires a seal overhaul?

  A: Key indicators include a drop in penetration rate (reduced striking power), visible oil weeping around the front housing nose, elevated system running temperatures, or excessive hydraulic hose pulse vibration.