Home / Rock Drill Accessories / Part Number 86338985 Drill Bit Tail Ring Is For Montabert HC109 Rock Drill

Part Number 86338985 Drill Bit Tail Ring Is For Montabert HC109 Rock Drill

Precision OEM Replacement Tail Ring for Montabert HC109 — Engineered for Stability, Durability & Performance

Part No. 86338985 is a critical rear support and alignment ring for the Montabert HC109 rock drill. Manufactured from high-strength, wear-resistant alloy steel, it ensures precise shank guidance, minimizes lateral vibration, and significantly reduces wear on the shank adapter, piston, and internal components.

Designed for continuous operation in demanding environments — including underground mining, hard-rock tunneling, and quarrying — this tail ring delivers consistent performance, improved drilling efficiency, and measurable extension of equipment service life.

Key Advantages

  • Exact OEM-equivalent fit for Montabert HC109 — no modification required
  • High-strength alloy steel construction for superior impact, abrasion, and fatigue resistance
  • Precisely engineered to stabilize drill shank alignment and suppress harmful lateral vibration
  • Reduces wear on shank adapter, piston, and housing — lowering total cost of ownership
  • Maintains optimal performance under high-cycle, high-impact rock drilling conditions
  • Rigorously tested for dimensional accuracy and material integrity per industrial standards

Applications

  • Underground and open-pit mining — continuous high-load rock drilling
  • Tunnel boring and civil infrastructure projects — precision stability in confined spaces
  • Quarrying and aggregate production — reliable operation in abrasive, high-impact settings
  • Heavy-duty construction drilling — enhanced durability in variable rock strata
  • Drill fleet maintenance programs — certified replacement part for uptime assurance

Technical Specifications

Part Number86338985
Compatible EquipmentMontabert HC109 Rock Drill
MaterialHigh-strength wear-resistant alloy steel
FunctionRear shank support & alignment ring
Installation PositionRear of shank adapter (interface with drill housing)
Key Performance BenefitVibration damping + lateral movement control

FAQ

Is this tail ring an exact OEM replacement for Montabert HC109?
Yes — part number 86338985 is dimensionally and functionally identical to the original Montabert specification, with full compatibility and drop-in installation.
What material grade is used, and does it meet ISO or ASTM standards?
Manufactured from quenched & tempered alloy steel meeting ASTM A29/A29M Grade 4140 equivalent specs, with hardness 38–42 HRC for optimal wear/impact balance.
What is the typical lead time for bulk orders?
Standard lead time is 5–7 business days for in-stock units; custom batches (≥50 pcs) ship in 12–18 days with certified material test reports included.
How does this tail ring improve drilling efficiency?
By maintaining precise shank alignment and absorbing lateral loads, it reduces energy loss, minimizes premature component wear, and sustains consistent penetration rates over extended shifts.

Detailed Description

Drill Bit Tail Ring (Part No. 86338985) – Suitable for Montabert HC109 Rock Drill

The Drill Bit Tail Ring, part number 86338985, is a precision-engineered structural component designed for the Montabert HC109 rock drill. It serves as the rear support and alignment ring for the drill shank adapter, ensuring proper guidance and stability during high-impact drilling operations.

Description

The drill bit tail ring is manufactured from high-strength, wear-resistant alloy steel to withstand the intense forces, vibration, and abrasion generated during rock drilling. Installed at the rear of the shank adapter, this ring provides a secure seating and alignment interface between the shank and the drill’s internal components.

Its precise fit minimizes lateral movement and vibration, reducing wear on the shank, piston, and surrounding internal parts. By maintaining optimal alignment during reciprocating and rotational motion, the tail ring contributes to improved drilling efficiency, reduced component fatigue, and extended equipment life.

Key Features

  • Part Number: 86338985

  • Compatible With: Montabert HC109 rock drill

  • Material: High-strength alloy steel

  • Function:

    • Provides rear support and alignment for the shank adapter

    • Helps absorb lateral loads and vibration

    • Reduces wear on internal components

  • Precision Fit: Ensures stable performance under heavy-duty drilling conditions

  • Durability: Designed for high impact, abrasion, and shock resistance

Applications

  • Mining and Quarrying — Enhanced stability and wear resistance in continuous drilling

  • Construction and Tunneling — Supports accurate, high-efficiency drilling

  • Heavy-Duty Rock Drilling — Ideal for demanding environments with repeated impact cycles

Conclusion

The Drill Bit Tail Ring (86338985) is an essential wear and support part for the Montabert HC109 rock drill. Its robust alloy steel construction and precision-fit design ensure stable shank alignment, reduced wear, and improved drilling performance, making it a key component for maintaining reliability in tough drilling applications.

Ensure Uptime. Order Your HC109 Tail Rings Today.

Stock available for immediate shipment — request bulk pricing, technical documentation, or OEM certification support.

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