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Montabert HC 28 Rock Drill Ring With 76mm Diameter And 8.5mm Thread Pitch

OEM-Exact Forged Rock Drill Ring for Montabert HC 28 — Precision Fit, Maximum Durability

High-strength Montabert HC 28 rock drill ring, forged from premium YG8 tungsten carbide for exceptional wear resistance and structural integrity. Features precise 76mm outer diameter and 8.5mm thread pitch, ensuring seamless compatibility with original Montabert HC 28 drilling systems. Manufactured to strict OEM tolerances for reliable torque transmission, vibration damping, and extended service life in demanding mining and hard-rock construction applications.

Each ring undergoes rigorous dimensional inspection and hardness verification — no compromises on fit, function, or fatigue resistance.

Key Advantages

  • Forged YG8 tungsten carbide construction for superior hardness (HRA ≥89) and impact resistance
  • Exact OEM dimensions: 76mm outer diameter, 8.5mm thread pitch, optimized thread depth & flank angle
  • ISO 9001-certified manufacturing with 100% dimensional QA testing per batch
  • Direct replacement for Montabert HC 28 — no adapter kits or modifications required
  • Enhanced surface finish (Ra ≤0.8μm) reduces galling and extends mating component life
  • Corrosion-resistant black oxide coating applied post-machining

Applications

  • Primary retention ring for Montabert HC 28 hydraulic rock drills in underground mining
  • Anchor interface in hard-rock tunneling rigs requiring high-torque bit retention
  • Replacement component in quarry drilling operations with abrasive granite/basalt formations
  • Retrofit solution for aging HC 28 fleets seeking OEM-equivalent reliability without downtime
  • Critical load-bearing ring in multi-stage drill string assemblies for deep-hole drilling

Technical Specifications

Diameter76 mm ±0.02 mm
Thread Pitch8.5 mm (M76×8.5 metric trapezoidal)
Material GradeYG8 (8% Co, 92% WC; density 14.5–14.9 g/cm³)
HardnessHRA 89–91
Tensile Strength≥1800 MPa
Surface FinishRa ≤0.8 μm (thread flanks), black oxide coating

FAQ

Is this ring certified as a genuine Montabert OEM part?
No — it is a high-fidelity aftermarket replacement engineered to meet or exceed Montabert HC 28 OEM specifications (drawing ref. HC28-RING-76-8.5), with full dimensional and material traceability.
Will it fit my existing HC 28 drill head without modification?
Yes. Verified compatibility with all HC 28 variants (including HC 28 A/B/C) using original Montabert thread gauges and torque testing protocols.
What is the typical lead time for bulk orders?
Standard lead time is 12–15 business days after order confirmation; expedited production (7 days) available with +18% surcharge.
Do you provide test reports for material composition and hardness?
Yes — each shipment includes a certified mill test report (MTR) with spectrometric analysis and Rockwell A hardness validation.
What’s the minimum order quantity (MOQ)?
MOQ is 5 pieces; sample orders (1–2 pcs) accepted with freight prepaid.

Detailed Description

Product Description:

Our rock drill parts are suitable for a wide range of applications in the construction, energy, and mining industries. Whether you need to drill through hard rock or tackle tough materials, our rock drill parts are up to the task. With a bit diameter of 34-42mm and a diameter of 76mm, these rock drill parts are perfect for a variety of drilling applications.

Our rock drill parts are made using the forging process, which ensures that they are strong, durable, and resistant to wear and tear. The forging process involves heating the metal to a high temperature and then shaping it using a hammer or press. This process ensures that the metal is evenly distributed and that the resulting part is strong and reliable.

Our rock drill parts are available in a range of grades, including YG6, YG8, YG8C, YG11, and more. These grades are designed to offer different levels of strength and hardness, depending on the specific requirements of your application. Whether you need a strong and durable rock drill part or a more flexible option, we have the perfect solution for you.

At our company, we understand the importance of reliable and efficient rock drill parts for your construction or mining works. That is why we only offer the highest quality products that are designed to meet your exact needs. Our rock drill parts are manufactured to the highest standards of quality and durability, ensuring that you can rely on them for years to come.

So if you are looking for durable and reliable rock drill parts for your construction or mining works, look no further than our collection of high-quality products. With our range of rock drill parts, you can be sure that you are getting the best possible performance and efficiency for your needs.

 

Applications:

The rock drill parts are versatile and can be used in different product application occasions and scenarios. For instance, the drill pipe can be used in mining, construction, and excavation, among other applications. It is a critical component that helps in the drilling process by connecting the drill bit to the drilling rig. The drill bit, on the other hand, is used to break the rock surface, and the connecting sleeve joins the drill pipe and drill bit. These parts are essential for efficient and effective rock drilling.

The rock drill parts are designed to meet the different needs of customers. They come in various designs, including C CA MBW Brass Design, which makes them suitable for different applications. Additionally, the parts come with a thread pitch of 8.5mm, which makes them compatible with different drilling rigs in the market.

Customers can also request for samples to test the quality of the rock drill parts before making a purchase. The support for samples shows the confidence of the manufacturer in their products and assures customers of high-quality parts.

The truck gateway lifter is one of the scenarios where the rock drill parts can be used. The lifter is an essential tool that helps in lifting trucks and other heavy vehicles. The drill pipe can be used to make the lifter more durable and efficient. Additionally, the drill bit can be used to drill holes in the ground where the lifter will be installed.

In conclusion, the rock drill parts are versatile and suitable for various product application occasions and scenarios. The parts are made in China using the forging process, making them durable and efficient. Customers can request samples to test the quality of the parts and be assured of high-quality products. The rock drill parts can be used in different scenarios, including the truck gateway lifter, to improve efficiency and effectiveness.

 

Packing and Shipping:

Product Packaging:

  • The rock drill parts will be packed securely in a sturdy cardboard box.
  • The box will be sealed with high-quality packing tape to prevent any damage during transit.
  • Each individual part will be carefully wrapped in bubble wrap to ensure maximum protection.

Shipping:

  • The product will be shipped via a reliable courier service.
  • Once shipped, the customer will receive a tracking number to monitor the delivery status.
  • Shipping times may vary depending on the destination, but we strive to deliver the product as quickly as possible.
 

FAQ:

Q: What is the brand name of these rock drill parts?

A: The brand name for these rock drill parts is Drill pipe, drill bit, connecting sleeve.

Q: What is the model number for these rock drill parts?

A: These rock drill parts are suitable for rock drilling rigs and do not have a specific model number.

Q: Where are these rock drill parts manufactured?

A: These rock drill parts are manufactured in China.

Q: Can these rock drill parts be used for different types of rock drilling rigs?

A: These rock drill parts are suitable for most rock drilling rigs and can be used with various types of rigs.

Q: What are the components included in this product?

A: This product includes drill pipe, drill bit, and connecting sleeve.

Ensure Uninterrupted Drilling Operations

Order your Montabert HC 28 rings today — backed by 18-month wear warranty and technical support from drilling engineers.

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