Home / Rock Drill Parts / FT160C Air Leg Suitable For Montabert HC25 Rock Drill 86732575 Spline Shank Ring

FT160C Air Leg Suitable For Montabert HC25 Rock Drill 86732575 Spline Shank Ring

Precision-Engineered Spline Shank + Ring Assembly for Optimal Energy Transfer & Longevity

Part No. 86732575 is a hardened steel spline shank and guide ring assembly engineered exclusively for the Montabert HC25 rock drill and compatible with the FT160C air leg. Designed to maximize impact energy transfer, maintain precise alignment, and reduce vibration under extreme loads — this assembly ensures reliability in mining, tunneling, and infrastructure drilling.

Its robust construction resists wear, deformation, and fatigue, directly extending drill uptime and minimizing maintenance costs.

Key Advantages

  • Hardened steel spline shank + stabilizing ring for superior impact resistance
  • Precision-machined splines ensure exact fit with HC25 drive system and optimal torque transfer
  • Reduces vibration and misalignment to protect internal drill components
  • Direct OEM-equivalent replacement for Montabert HC25 (part 86732575)
  • Certified compatibility with FT160C air leg — no adapter required
  • Field-proven durability in abrasive, high-cycle rock drilling environments

Applications

  • Primary energy transfer between HC25 rock drill and drill bit
  • Stabilization and axial alignment of shank within drill housing
  • Vibration damping to extend service life of hammer mechanism and seals
  • Heavy-duty drilling in hard rock mining and underground tunneling
  • Infrastructure projects requiring consistent penetration rates and low downtime
  • Retrofit upgrades for aging HC25 fleets seeking OEM-spec performance

Technical Specifications

Part Number86732575
Compatible Drill ModelMontabert HC25
Compatible Air LegFT160C
MaterialHardened alloy steel (HRC 58–62)
Spline TypePrecision-ground parallel splines
Weight2.4 kg (approx.)

FAQ

Is this assembly a direct replacement for the original Montabert 86732575 part?
Yes — manufactured to OEM specifications with identical dimensions, spline geometry, and material hardness for full interchangeability.
Will it work with non-Montabert air legs or other drill models?
No. This assembly is engineered exclusively for the Montabert HC25 and validated only with the FT160C air leg. Cross-compatibility is not guaranteed.
What is the typical lead time for bulk orders?
Standard lead time is 5–7 business days for in-stock items; custom batches (≥50 units) ship in 12–18 days with ISO-certified quality documentation.
How does this assembly improve drill bit life?
By ensuring precise shank alignment and minimizing lateral vibration, it reduces uneven bit wear and prevents premature chipping or bending.
Do you provide test reports or material certifications?
Yes — each batch includes mill test reports (MTRs), hardness verification (HRC), and dimensional inspection records upon request.

Detailed Description

The Spline Shank + Ring Assembly (Part Number 86732575) is a robust and precisely engineered component set designed specifically for the Montabert HC25 rock drill. This assembly plays a crucial role in the efficient transfer of impact energy and rotational torque from the rock drill to the drill bit, ensuring optimal performance in demanding drilling environments. Below is a detailed description:

Description

The Spline Shank is crafted from high-strength, hardened steel, featuring precision-machined splines to provide a secure connection with the drill's drive system. The accompanying Ring enhances stability and alignment, ensuring smooth operation and reduced wear on associated components.

This assembly is designed to endure high-impact forces, rotational stress, and extreme working conditions typically encountered in mining, tunneling, and construction applications. The combination of the spline shank and the guide ring ensures effective energy transfer, minimizes vibration, and protects critical internal components from premature wear.

Key Features

  1. Durable Materials: Both the spline shank and the ring are made of hardened steel or a specialized alloy to resist wear, impact, and deformation under heavy-duty use.

  2. Precision Splines: Machined for a perfect fit with the rock drill’s internal drive, ensuring efficient torque transfer and smooth operation.

  3. Stabilizing Ring: Provides additional support and alignment for the spline shank, reducing vibration and protecting surrounding components.

  4. Impact and Wear Resistance: Designed to withstand repeated high-energy impacts and abrasive conditions, extending the lifespan of the assembly.

  5. Compatibility: Specifically engineered for the Montabert HC25 rock drill, ensuring seamless integration and optimal performance.

Applications

  • Energy Transfer: Facilitates the transmission of impact and rotational energy from the drill mechanism to the drill bit.
  • Shank Alignment: Maintains proper alignment of the shank within the drill housing, reducing wear and operational stress.
  • Component Protection: Prevents excessive vibration and misalignment, protecting the drill’s internal mechanisms.

Introduction

The 86732575 Spline Shank + Ring Assembly is essential for maintaining the performance and reliability of the Montabert HC25 rock drill. By ensuring efficient energy transfer and proper alignment, this assembly supports high drilling efficiency while minimizing wear on critical components.

The durable construction of the spline shank and ring is tailored to withstand the harsh conditions of rock drilling, offering exceptional reliability and reduced maintenance needs. This assembly is indispensable for operators seeking to optimize the lifespan and performance of their HC25 rock drill.

Conclusion

The Spline Shank + Ring Assembly (86732575) is a high-quality, durable solution for the Montabert HC25 rock drill, ensuring smooth and efficient drilling operations. With its precision engineering, wear resistance, and robust design, this assembly is a key component in maximizing the productivity and longevity of the HC25 in even the most challenging drilling environments.

Ensure Uninterrupted Drilling Performance

Order your certified 86732575 spline shank + ring assembly today — backed by 2-year component warranty and technical support.

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