Epiroc SB302 Hammer Repair Kit 3315301890 3382070102

Heavy-Duty Hydraulic Breaker Seal Overhaul Kit for Epiroc SB302 Hydraulic Hammers | OEM Part: 3315301890 / 3382070102

Maximum Impact Power for Demolition & Rock Breaking

The Epiroc / Atlas Copco SB302 hydraulic breaker is an industry benchmark for solid-body demolition performance. Operating under thousands of high-frequency blows per minute, severe hydraulic pressure surges, and continuous exposure to concrete dust and rock slurry, dynamic seals inside the hammer cylinder undergo extreme shock fatigue.

When dynamic seal lips degrade, internal hydraulic oil bypasses the piston chamber, causing a sharp drop in impact energy, increased blow response latency, elevated oil running temperatures, and external fluid weeping around the tool bushing. Rebuilding your breaker with our 3315301890 / 3382070102 Service Seal Kit restores original hydraulic compression, stops fluid leaks, and maximizes jobsite equipment uptime.

Technical Specifications & System Cross-Reference

• Brand Compatibility: Epiroc / Atlas Copco Demolition Tools

• Target Equipment Component: Epiroc SB302 Solid-Body Hydraulic Breaker / Hammer

• Primary OEM Reference Part Numbers: 3315301890 (Cross-Ref: 3382070102)

• Internal Catalog SKU: 3315301890-EPI-SB302

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

• Dynamic Operating Pressure Limit: Rated for continuous percussive shock loads up to 250+ Bar (3625+ PSI)

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

• Kit Inclusions: Main Piston Dynamic Step Seals, Accumulator O-Rings, Buffer Seals, Back-up Rings, and Front Tool Dust Scraper

Key Material Science & Hydraulic Protection Features

• High-Modulus Polyurethane (TPU) Step Seals: Retains dynamic lip flexibility and seal memory under extreme vibration and rapid percussive cycles without cracking.

• High-Temp Viton (FKM) Energizers: Maintains steady dynamic radial tension during severe hydraulic oil thermal spikes inside enclosed hammer housings.

• Anti-Extrusion PTFE Wear Rings: Reduces sliding friction along moving impact components, preventing scuffing and cross-chamber oil leakage.

• Heavy-Duty Scraper Wiper: Actively clears abrasive quartz dust, concrete debris, and moisture before contaminants penetrate internal piston housings.

Field Service & Rebuild Guidelines for Equipment Mechanics

💡 Jobsite Maintenance Tip:

High-frequency hydraulic breakers require clean assembly conditions during seal overhauls. When servicing an Epiroc SB302 hammer using the 3315301890 kit, thoroughly flush the cylinder housing and accumulator cavity in a clean solvent bath. Inspect the piston surface and tool bushing for scoring or excessive clearance. Installing new dynamic seals into a worn bushing housing can cause premature seal lip cutting and rapid fluid bypass.

Q&A

• Q: Is part number 3315301890 interchangeable with 3382070102 for Epiroc SB302 breakers?

  A: Yes. OEM part numbers 3315301890 and 3382070102 represent cross-referenced service seal kits engineered to identical factory specifications for Epiroc / Atlas Copco SB302 hydraulic hammers.

• Q: What are the main failure symptoms indicating an Epiroc SB302 hammer needs new seals?

  A: Key indicators include a loss of impact striking force, slow or hesitating chisel stroke frequency, visible hydraulic fluid leaking around the lower tool steel bushing, or excessive hydraulic hose pulsing.