Products
Home > Products > Cemented Carbide Precision Bushing Sleeves

Cemented Carbide Precision Bushing Sleeves

In high-precision machining and tooling applications, component rigidity and dimensional stability are non-negotiable. Our DIN179A Precision Drill Bushings set the industry benchmark for guiding cutting tools with exceptional accuracy, minimizing deflection and ensuring consistent hole quality. When even greater wear resistance is required, especially in high-volume production runs, our Hardened Steel Plain Drill Bush provides a robust and durable solution. For the most demanding environments where extreme hardness, superior wear resistance, and excellent corrosion resistance are critical, our Cemented Carbide Precision Bushing Sleeves offer an unparalleled performance upgrade. Machined from premium-grade tungsten carbide, these sleeves are engineered to withstand severe abrasive wear, high-pressure coolants, and corrosive atmospheres, drastically extending service life and reducing machine downtime for costly replacements.


Our Cemented Carbide Precision Bushing Sleeves are not merely replacements for steel components; they represent a strategic investment in manufacturing efficiency and part quality. The exceptional material properties of cemented carbide allow for tighter internal tolerances and superior surface finishes on the ID, which directly translates to improved guidance for drills, reamers, and other cutting tools. This results in straighter, more precise holes with enhanced surface integrity. The sleeves are designed for press-fit installation into jigs, fixtures, or machine housings, providing a permanent, rock-solid guide point. They are ideal for applications in aerospace, automotive, medical device manufacturing, and any precision engineering sector where tool longevity and consistent output are paramount. Each sleeve undergoes rigorous inspection to guarantee concentricity, roundness, and dimensional accuracy, ensuring reliable performance from the first operation to the last.

Key Specifications & Technical Data

  • Base Material: Premium Tungsten Carbide (WC-Co)
  • Hardness: 88.5 - 92.5 HRA (Approx. 1400 - 1800 HV)
  • Density: 14.0 - 15.0 g/cm³
  • Transverse Rupture Strength: 2800 - 3500 N/mm²
  • Compressive Strength: > 5000 N/mm²
  • Co-efficient of Thermal Expansion: 5.5 - 6.0 µm/m·K
  • Surface Finish (ID): Ra ≤ 0.2 µm (Custom finishes available)
  • Operating Temperature Range: Up to 800°C (1472°F) in inert atmosphere
  • Corrosion Resistance: Excellent resistance to acids, alkalis, and oxidation.

Standard Dimensional Tolerances (Example Range)

Inside Diameter (ID) Range Standard ID Tolerance (H6) Outside Diameter (OD) Tolerance Concentricity (T.I.R.)
1.0 mm - 3.0 mm +0.006 / +0.000 mm k6 ≤ 0.003 mm
3.0 mm - 6.0 mm +0.008 / +0.000 mm k6 ≤ 0.004 mm
6.0 mm - 10.0 mm +0.009 / +0.000 mm m6 ≤ 0.005 mm
10.0 mm - 18.0 mm +0.011 / +0.000 mm m6 ≤ 0.006 mm
18.0 mm - 30.0 mm +0.013 / +0.000 mm n6 ≤ 0.008 mm

Available Configurations & Finishes

  • Standard: Unground OD, Precision Ground ID.
  • Precision Ground: Fully ground ID and OD for highest accuracy.
  • Flanged / Shouldered: For positive axial location.
  • Special Coatings: TiN, TiCN, or DLC coatings available for specific applications.
  • Custom Geometry: Manufactured to customer-specific drawings and specifications.

Related Products

Hot Products

  • Precision Ball Lock Punches

    Precision Ball Lock Punches

    The Luckyear’s Precision Ball Lock Punches are made of high-quality materials that are designed to last. The punches are constructed from hardened steel and feature a chrome-plated finish that provides superior corrosion resistance. This construction ensures that your punches will last for years and maintain their precision and accuracy with each use.
  • Special Dies

    Special Dies

    Special Dies from Luckyear supplier are custom-made cutting tools that are designed specifically for particular tasks. They are usually manufactured for industrial applications such as stamping, forging, and extrusion.
  • Make to Order Parts

    Make to Order Parts

    With our Luckyear Make to Order Parts, you can assure that your products will be customized to the exact specs you require. Our team of experienced professionals will work with you every step of the way to ensure that the final product is exactly what you need. Our goal is to save you time and money while providing the highest quality products on the market.
  • Standard ISO 8977 Dies Type A

    Standard ISO 8977 Dies Type A

    Luckyear is China's original Standard ISO 8977 Dies Type A manufacturer and supplier. With an experienced R&D team in this field, we can provide domestic and foreign customers with the most cost-effective products.
  • Standard ISO 8977 Dies Type B

    Standard ISO 8977 Dies Type B

    Standard ISO 8977 Dies Type B can be compatible with a wide range of machines, making it easy to integrate into your existing manufacturing process. Plus, its modular design allows you to customize it for your specific needs, whether you're producing parts in large quantities or working on a one-off project.
  • Standard Bush DIN172A

    Standard Bush DIN172A

    This high-quality Standard Bush DIN172A is designed to provide durability, reliability and exceptional performance under the most demanding conditions. With its superior construction and precision engineering, our Standard Bush DIN172A offers uncompromising quality and value.
  • Related Blog
  • Reviews

  • How Are Standard Ejector Pins Used in Injection Molding Systems?

    Standard Ejector Pins are fundamental components in injection molding systems, responsible for the precise and repeatable ejection of molded parts from the mold cavity. This article provides a structured and technical exploration of Standard Ejector Pins, focusing on dimensional standards, material specifications, operational principles, application scenarios, and industry-recognized challenges. The objective is to clarify how these components function within modern mold designs while addressing common technical questions raised by tooling engineers, mold designers, and procurement specialists.

  • How to prevent workpiece damage in precision hardware processing?

    How to prevent six measures from damage in hardware processing factories? We can see hardware everywhere. What kind of protection does our hardware need? How to maintain them and prevent them from being damaged. We will introduce its protective measures from six aspects.

  • Market for Carbide Punches and Dies

    Carbide punches and punch sleeves are important parts in the stamping die industry and have the characteristics of high hardness, high wear resistance, and high precision. At present, with the continuous improvement of stamping testing technology, the accuracy and life of carbide punches and punch bushings are better guaranteed.

  • Why Choose Standard Punches with Coatings for Your Manufacturing Needs?

    Standard punches are essential tools in various industrial applications, particularly in the molding and stamping industries.

  • What Are the Common Materials for CNC Machining?

    CNC is an automated processing technology controlled by computer programs. It can process a wide variety of common materials and is widely used in various industries.

  • What Are the Categories of Carbide Standard Dies?

    Carbide (also known as tungsten steel) is widely used in the manufacture of standard parts in the industrial field due to its high hardness, wear resistance and high temperature resistance.

Send Inquiry