3128314257 Hydraulic Rock Drill Seal Kit for Atlas Copco Boomer Face Drill Repair Service Kit

Heavy-Duty Hydraulic Rock Drill Sealing Repair Kit for Atlas Copco Boomer Face Drilling Rigs | OEM Part: 3128314257

Built for Severe Underground Development & Tunneling Conditions

In hard-rock underground mining and development drifting, Atlas Copco / Epiroc Boomer jumbos operate under continuous vibration, high hydraulic flow, and harsh ambient slurry contamination. Delivering thousands of strikes per minute, internal dynamic seals face intense thermal friction and pressure shockwaves that cause lip deformation, fluid weeping, and reduced drilling output over time.

Our 3128314257 Hydraulic Service Repair Kit is custom-compounded from hydrolysis-resistant Polyurethane (TPU), Fluorocarbon (FKM/Viton), and bronze-filled PTFE to deliver high seal memory, zero-leak dynamic containment, and maximum penetration velocity under severe mining conditions.

Technical Specifications & System Compatibility

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

• Target Machinery Application: Atlas Copco Boomer Underground Face Drilling Jumbo Series (Rock Drill & Feed Hydraulics)

• Primary OEM Part Number: 3128314257 (Cross-ref: 3128 3142 57)

• Internal Catalog SKU: 3128314257-AC-BOOMER

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

• Dynamic Operating Pressure Limit: Rated for peak dynamic shock spikes up to 250+ Bar (3625+ PSI)

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

• Primary Application Scope: Underground Mine Development, Civil Tunneling, Blast-Hole Drilling, and Civil Foundation Construction

Key Hydraulic Protection & Material Features

• High-Modulus Polyurethane (TPU) U-Cups: Retains dynamic lip memory and flexible radial loading under high-frequency impact cycles without splitting or tearing.

• High-Temp Viton (FKM) Energizers: Maintains static and dynamic seal pressure during severe hydraulic oil temperature spikes in enclosed tunnel faces.

• Anti-Extrusion Bronze-PTFE Guide Rings: Provides low-friction piston guidance, dampens side-load chatter, and eliminates cross-chamber fluid bypass.

• Severe-Duty Scraper Wiper: Keeps quartz dust, rock slurry, and acidic flushing water from penetrating the housing gland, preserving internal chrome components.

Field Service & Rebuild Guidelines for Mine Mechanics

💡 Fleet Maintenance Tip:

Fine quartz sand in underground mine headings can mix with hydraulic fluid, creating an abrasive paste that degrades sealing lips prematurely. When overhauling hydraulic components on an Atlas Copco Boomer using the 3128314257 kit, thoroughly flush housing gland cavities in a solvent bath and inspect the shank adapter contact surfaces and driver bushings for scoring or ovalization. Replacing worn driver bushings alongside dynamic seals prevents radial play and doubles the service life of your new seals.

Q&A

• Q: Is part number 3128314257 interchangeable between Atlas Copco and Epiroc face drills?

  A: Yes. Epiroc is the dedicated mining division formerly operating under Atlas Copco. Part number 3128314257 / 3128 3142 57 matches identical factory dimensions across both brand designations.

• Q: What are the primary failure symptoms indicating that a Boomer rock drill needs a seal overhaul?

  A: Key indicators include a drop in penetration rate (loss of striking force), visible hydraulic oil weeping around the front housing gland, or elevated oil temperatures caused by internal fluid bypass.