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 demanding applications—including underground mining, tunnel boring, and quarrying—this tail ring delivers consistent performance under extreme impact, abrasion, and thermal stress.

Key Advantages

  • OEM-equivalent precision fit for Montabert HC109 — zero compatibility risk
  • High-strength alloy steel construction with enhanced shock & abrasion resistance
  • Reduces shank misalignment and lateral vibration by up to 40% (field-validated)
  • Extends service life of shank adapter and internal drill components
  • CNC-machined to ±0.02 mm tolerance for optimal load distribution
  • Direct drop-in replacement — no modifications or recalibration required

Applications

  • Underground and open-pit mining operations
  • Hard-rock tunneling and metro construction
  • Quarry drilling with abrasive granite and basalt formations
  • Heavy-duty demolition and foundation piling
  • Drill rig fleet maintenance programs

Technical Specifications

Part Number86338985
Compatible EquipmentMontabert HC109 Rock Drill
MaterialHeat-treated alloy steel (AISI 4340 equivalent)
HardnessHRC 52–56
Tolerance±0.02 mm
Surface FinishGround & deburred; optional black oxide coating

FAQ

Is this tail ring an exact OEM replacement for Montabert HC109?
Yes — manufactured to original Montabert specifications, including dimensional tolerances, material grade, and heat treatment profile.
What’s the typical lead time for bulk orders?
Standard lead time is 3–5 business days for in-stock units; custom batches (50+ pcs) ship in 12–18 days with full QA documentation.
Does it require special installation tools or torque settings?
No — installs using standard HC109 shank assembly procedure; no special tools or recalibration needed.
How does it compare to aftermarket alternatives in durability?
Outperforms generic versions by 2.3× average service life in field tests due to certified alloy composition and controlled hardening process.

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 Optimal HC109 Performance — Order Your 86338985 Tail Rings Today

Stock available for immediate shipment. Request bulk pricing, technical drawings, or OEM certification documents.

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