Slide door bearings can be constructed from various materials, depending on the specific application and requirements. Commonly used materials for the construction of slide door bearings include:

Steel: Steel is a widely used material due to its durability and strength. Stainless steel is often preferred for its corrosion resistance, making it suitable for outdoor and high-humidity environments.

Aluminum: Aluminum is lighter than steel and is often used in applications where weight is a concern. It also offers good corrosion resistance.

Bronze: Bronze slide door bearings are known for their self-lubricating properties, reducing the need for additional lubrication. They are commonly used in applications where quiet operation is essential.

Plastics: Various plastics, such as nylon, polyethylene, and polyurethane, can be used in slide door bearings. Plastic bearings are lightweight and can be suitable for less demanding applications.

Ceramics: In some high-performance and specialized applications, ceramic materials may be used for their exceptional hardness and resistance to wear.

Composite Materials: Composite materials, which combine different materials like fiberglass and resin, can be used to create slide door bearings with specific performance characteristics.

Brass: Brass bearings are known for their corrosion resistance and durability. They are often used in decorative or antique-style door applications.

The choice of material depends on factors like load-bearing capacity, environmental conditions, noise considerations, and the specific needs of the sliding door system. Bearings may also incorporate multiple materials, such as steel with a plastic or Teflon coating for reduced friction and quieter operation.