
Steel bushings are produced through precision turning from high-quality steel bars. Our manufacturing process is highly automated, utilizing state-of-the-art robotic systems and next-generation CNC machines to ensure consistency, efficiency, and precision. Advanced robotics and CNC technology handle multiple stages of production, from material feeding to machining and final surface finishing. This automation ensures strict quality control and allows for extensive customization while meeting the highest industry standards
Raw Materials
We work with different types of steel to manufacture bushings, including alternative materials such as:
- Case hardening steels: 20MnCr5, 18NiCrMo5, 20MnV6
- Quenched and tempered steels: 42CrMo4, C45, 39NiCrMo3
- Stainless steels: AISI 304, AISI 431, AISI440C
Steel Selection
The choice of steel depends on the application and required properties, such as wear resistance, corrosion resistance, or high-strength performance. We primarily use carbon steel, alloy steel, and stainless steel to ensure durability and efficiency. However, we also offer machining with specific steels upon request to meet particular requirements.
Bushing Types
We produce various types of bushings, including:
- Flanged bushings
- Sleeve bushings
- Oversized bushings
- Stainless steel bushings
Thanks to our modern automated warehouse, we maintain a stock of over 255,000 finished products, ensuring fast and reliable supply.
Our bushings are designed to withstand extreme conditions in heavy-duty applications such as construction, agriculture, and mining.
Hardened Steel Bushings – Size Range
We offer steel bushings in a wide range of sizes:
- Metric: External diameters from 16 mm to 300 mm
- Inches: External diameters from 0.63″ to 11.81″
Catalog
You can request our PDF catalog for an overview of our steel bushings. Some models are available in stock, while others can be made to order. Contact us at sales@sibo.eu for inquiries.
Custom Bushings
For custom solutions, including special treatments, unique steel compositions, or adaptations to standardize your production process, reach out to us. Our technical department, with over 45 years of experience, provides expert assistance to major companies in the earth-moving, agricultural, and industrial sectors.
Additionally, we offer feasibility studies for replacing bronze bushings with our steel bushings or for finding solutions to improve the efficiency of your machines

Certifications
You can consult our ISO and environmental certifications, which we uphold with great commitment to quality and sustainability—because we understand how a modern industrial production must meet real and certified sustainability standards.