Home / Rock Drill Parts / Montabert HC25 Rock Drill 86733243 Retainer Shank Suitable For Mining / Tunneling FT160C Air Leg

Montabert HC25 Rock Drill 86733243 Retainer Shank Suitable For Mining / Tunneling FT160C Air Leg

Precision-Engineered Retainer Shank for HC25 Rock Drills & FT160C Air Legs

Montabert HC25 shank ring (P/N 86733243) is a critical wear component designed for demanding underground and surface drilling operations. Made from hardened steel, it ensures exact shank alignment, absorbs high-frequency impact loads, and protects both the drill shank and FT160C air leg internals from premature wear. Compatible exclusively with Montabert HC25 rock drills and FT160C support systems.


Regular replacement of this retainer extends equipment life, reduces unplanned downtime, and maintains optimal energy transfer efficiency — essential for high-productivity mining and tunneling projects.

Key Advantages

  • Hardened steel construction for extreme wear resistance in abrasive mining environments
  • Precision-machined inner/outer tolerances to eliminate play and ensure zero misalignment
  • Optimized geometry for consistent impact force distribution across the FT160C air leg interface
  • Direct OEM-equivalent replacement — no modification or adaptation required
  • Reduces shank wobble by up to 40%, improving drilling accuracy and bit life
  • Quick-swap design enables field replacement in under 8 minutes with standard tools

Applications

  • Underground hard-rock mining (stoping, development, raise boring)
  • Tunnel excavation with FT160C-supported HC25 drill rigs
  • Civil infrastructure projects requiring high-reliability rock drilling
  • Quarry blast-hole drilling in abrasive granite and basalt formations
  • Drill rig refurbishment and OEM-compliant maintenance programs

Technical Specifications

Part Number86733243
Compatible Drill ModelMontabert HC25
Compatible Air LegFT160C
MaterialHardened alloy steel (HRC 58–62)
Weight1.42 kg
Outer Diameter92.0 mm ±0.05 mm
Inner Diameter50.8 mm ±0.03 mm

FAQ

Is this shank ring compatible with non-Montabert air legs?
No — it is engineered specifically for the FT160C air leg interface and HC25 drill kinematics. Substitution with other brands may cause misalignment, accelerated wear, or failure.
What is the recommended replacement interval?
Inspect every 200 operating hours; replace at first sign of radial play (>0.15 mm), surface pitting, or edge chipping — typically 400–600 hours in standard tunneling conditions.
Do you offer certified material test reports (MTRs)?
Yes — all units ship with traceable MTRs confirming hardness (HRC 58–62), tensile strength (≥1,850 MPa), and chemical composition per ASTM A29/A108.
What’s the lead time for bulk orders (50+ units)?
Standard lead time is 5–7 business days from order confirmation; expedited shipping available. Stock held for common SKUs in EU and US distribution hubs.

Detailed Description

The shank ring for the Montabert HC25 rock drill is an essential wear component designed to provide support and alignment for the drill shank during operation. It ensures efficient energy transfer while protecting both the shank and the internal components of the rock drill from excessive wear and misalignment. Below is a detailed description and introduction to the shank ring:

Description

The shank ring is typically constructed from high-strength, wear-resistant materials such as hardened steel or specialized alloys. It is precisely engineered to fit securely around the drill shank, providing a stable interface between the shank and the rock drill's internal components.

This component plays a dual role: it aligns the shank to ensure smooth operation and prevents damage to surrounding parts caused by vibration or excessive movement. The shank ring is subjected to significant stress and impact during operation, making its durability a critical factor in maintaining the efficiency and longevity of the HC25 rock drill.

Key Features

  1. Durable Material: Manufactured from hardened steel or high-grade alloys to withstand extreme forces and minimize wear.

  2. Precision Fit: Ensures a snug, secure connection with the shank, reducing vibration and preventing misalignment.

  3. Impact Resistance: Designed to absorb and distribute impact forces during drilling, protecting both the shank and the drill housing.

  4. Wear Protection: Acts as a buffer to prevent direct contact and wear between the shank and other critical components.

  5. Easy Replacement: Designed for quick and straightforward installation, reducing downtime during maintenance.

Applications

  • Shank Support: Provides stable support for the shank, ensuring efficient energy transfer during drilling.
  • Alignment Maintenance: Keeps the shank properly aligned with the internal components, reducing wear and increasing precision.
  • Component Protection: Prevents damage to internal components by absorbing impact and reducing vibration.

Introduction

The shank ring for the Montabert HC25 rock drill is an indispensable part of the system, ensuring stable and efficient operation. Its role in aligning and protecting the shank significantly contributes to the overall performance and reliability of the rock drill, particularly in demanding applications such as mining, tunneling, and construction.

Regular inspection and timely replacement of the shank ring are essential for maintaining the optimal performance of the HC25 rock drill. This simple yet critical component helps minimize downtime, extend the life of the equipment, and reduce maintenance costs.

Conclusion

The shank ring for the Montabert HC25 rock drill is a high-quality, wear-resistant component that plays a vital role in maintaining the performance and longevity of the drilling system. By providing shank alignment, impact resistance, and wear protection, the shank ring ensures that the HC25 operates reliably and efficiently, even in the harshest conditions. Its robust design and easy maintenance make it an essential part of any rock drill setup.

Ensure Uptime. Order Your HC25 Retainer Shank Today.

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