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Part Number 86374055 Accumulator Cover For Montabert HC109 Rock Drill

Precision-Sealed Protection for HC109 Hydraulic Accumulators

Part No. 86374055 is a high-strength alloy steel accumulator cover engineered exclusively for the Montabert HC109 rock drill. It provides critical sealing of the hydraulic accumulator chamber—maintaining nitrogen pressure, preventing fluid leakage, and shielding internal components from contamination, shock, and extreme vibration in demanding mining, tunneling, and construction environments.

Designed for exact dimensional and functional compatibility, this cover ensures stable energy storage/release, consistent impact performance, and extended hydraulic system service life.

Key Advantages

  • OEM-equivalent precision fit for Montabert HC109 hydraulic accumulator assembly
  • Forged from high-strength alloy steel to resist high pressure, impact, and cyclic vibration
  • Dual-function seal: maintains nitrogen precharge pressure & blocks hydraulic fluid leakage
  • Integrated contamination barrier protects accumulator bladder/piston from dust, grit, and moisture
  • Validated for continuous operation in underground mining and hard-rock tunneling applications
  • Reduces unplanned downtime by extending accumulator service intervals by up to 35%

Applications

  • Montabert HC109 rock drill hydraulic accumulator systems
  • High-pressure energy storage in percussive drilling mechanisms
  • Underground mining and tunnel boring machine (TBM) support equipment
  • Heavy-duty construction drilling rigs requiring ISO 4406 Class 18/16/13 fluid cleanliness
  • Retrofit upgrades for aging HC109 fleets seeking improved pressure retention

Technical Specifications

Part Number86374055
Compatible ModelMontabert HC109 Rock Drill
MaterialHeat-treated alloy steel (AISI 4140 equivalent)
Surface TreatmentBlack oxide + corrosion-inhibiting oil coating
Max Operating Pressure350 bar (5,075 psi)
Sealing InterfaceDual O-ring groove (NBR 70 Shore A, -20°C to +100°C)

FAQ

Is this cover compatible with other Montabert models besides HC109?
No — Part No. 86374055 is dimensionally and functionally validated only for the HC109. It is not interchangeable with HC105, HC115, or Vario series drills.
What certifications or testing does this accumulator cover undergo?
Each unit is hydrostatically tested to 420 bar, inspected for dimensional compliance per Montabert drawing 86374055-REV.D, and certified to ISO 9001:2015 manufacturing standards.
What is the typical lead time for bulk orders?
Standard lead time is 5–7 business days for quantities ≤50 pcs; 12–15 days for 51–200 pcs. Expedited shipping available upon request.

Detailed Description

Accumulator Cover (Part No. 86374055) – Suitable for Montabert HC109 Rock Drill

The Accumulator Cover, part number 86374055, is a durable and precision-engineered component designed for the Montabert HC109 rock drill. It forms the protective enclosure for the hydraulic accumulator assembly, helping to maintain system pressure, protect internal elements, and ensure consistent impact performance.

Description

The accumulator cover is manufactured from high-strength alloy steel to withstand the high pressures, vibration, and impact forces typical in heavy-duty rock drilling operations. It seals the accumulator chamber — where nitrogen gas and hydraulic fluid interact — ensuring pressure is maintained and leakage is prevented.

Proper function of the accumulator cover is essential for stable energy storage and release, which directly influences the efficiency and reliability of the impact mechanism. Its robust design also protects the internal accumulator components from contamination, damage, and wear.

Key Features

  • Part Number: 86374055

  • Compatible With: Montabert HC109 rock drill

  • Material: High-strength alloy steel

  • Function:

    • Seals and protects the hydraulic accumulator assembly

    • Maintains internal pressure and prevents leakage

    • Shields internal parts from debris and impact damage

  • Durability: Built for harsh drilling conditions — vibration, shock, and high pressure

  • Precision Fit: Designed for exact compatibility with HC109 hydraulic accumulator components

Applications

  • Hydraulic Accumulator Systems – Maintains pressure balance and energy storage

  • Impact Mechanisms – Supports consistent piston movement

  • Mining, Tunneling, Construction – Ensures dependable performance under heavy use

Conclusion

The Accumulator Cover (86374055) is an essential protective component for the Montabert HC109 rock drill. Its rugged alloy steel construction, precision sealing capability, and pressure-handling performance make it vital for stable drilling operation, reduced maintenance, and extended service life of the hydraulic system.

Ensure Reliable HC109 Operation

Order genuine-spec 86374055 accumulator covers today — backed by 24-month warranty and technical support from Montabert-certified engineers.

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