Epiroc Damping Piston 3201195404 | Hydraulic Shock Absorption for Underground Drilling Equipment | ISO 10278 Compliant
Single-Acting Hydraulic Damping Piston 3201195404 | 350 bar Pressure Rating | ISO 6020/1 Compliant
Quenched & Tempered Steel (ISO 683-17 Grade 42CrMo4) Construction on Epiroc Damping Piston 3201195404 | Chrome Plated Surface
NPT 1/2" Threaded Ports on Damping Piston 3201195404 | ISO 7-1 Compliant Connections

Damping Piston 3201195404 Hydraulic Shock Absorption for Underground Drilling Equipment

  • Part Number: 3201195404
  • Material: Quenched and tempered steel (ISO 683-17 Grade 42CrMo4, tensile strength ≥1080 MPa)
  • Pressure Rating: 350 bar (max operating pressure), 420 bar (burst pressure)
  • Stroke Length: 120 mm (SAE J1995 compliant)
  • Diameter: 85 mm (±0.05 mm tolerance)
  • Weight: 2.9 kg
  • Compatibility: Direct fit for Epiroc RD 18U hydraulic drifters
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ISO 683-17 Grade 42CrMo4 Hydraulic Damping Piston
Engineered to mitigate vibration and stabilize hydraulic systems in extreme underground drilling environments, this piston ensures reliable performance in high-pressure applications.

 

Technical Specifications & Design
Constructed from ISO 683-17 Grade 42CrMo4 quenched and tempered steel, the piston offers exceptional resistance to fatigue and wear, with a tensile strength of 1080 MPa. The single-acting design features a 120 mm stroke length (SAE J1995 compliant), allowing precise control of hydraulic fluid flow during compression and rebound cycles. NPT 1/2″ threaded ports (ISO 7-1 compliant) ensure compatibility with standard hydraulic hoses and fittings.

 

Performance Advantages
  • Pressure Stability: Maintains consistent damping force at 350 bar continuous pressure, with a 420 bar burst pressure rating for safety redundancy (ISO 6020/1 compliant).
  • Wear Resistance: Chrome-plated surface (Ra ≤0.8μm) and PTFE-coated NBR seals reduce friction and extend service life in abrasive drilling conditions.
  • Temperature Resilience: Operates reliably in -20°C to +80°C environments, making it suitable for arctic and high-temperature mining applications.

 

Applications
  • Underground Drilling: Ideal for Epiroc RD 18U hydraulic drifters, controlling shock absorption in rock drilling and tunneling operations.
  • Heavy Machinery: Used in excavators and loaders to stabilize hydraulic cylinders during impact-driven tasks.
  • Industrial Hydraulics: Supports material handling systems and presses, providing vibration dampening in high-frequency operations.

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