What are the characteristics of oil-free bushings of different materials?

Oil-free bushing is a special bearing that uses oil from the oil groove as lubrication and has the function of self-lubrication. This kind of bearing is loaded by a metal matrix, and a specially formulated solid lubricant acts as a lubricant. It is suitable for heavy loads, low speeds, reciprocating or swinging occasions that are difficult to lubricate and form an oil film, and is not afraid of water flushing and other acid erosion and scouring.
The working principle of oil-free bushing: mainly relying on its special structure and materials, reducing friction and wear through lubrication and shock absorption, and improving the operating efficiency and stability of mechanical equipment.

Oil-free bushings of different materials have different characteristics:
Copper alloy material: has many advantages such as high temperature resistance, corrosion resistance, and impact resistance. It is suitable for heavy-load and low-speed operation scenarios, and is the most versatile product among oil-free bushings.
Bronze material: excellent sintering resistance, can achieve tiny operation, suitable for low-load and high-speed operation.
Composite material: The composite layer oil-free bushing has a compact structure, fast production speed and low production cost. It is suitable for heavy-load and low-speed operation scenarios with low precision requirements.
Cast iron material: has high precision and can maintain a small deformation under heating. This type of oil-free bushing is more economical than copper alloy oil-free bushings and is suitable for medium-load and low-speed operation.
Oil-free bushing assembly: The oil-free bushing assembly is mainly composed of a steel shell and a copper alloy oil-free bushing, an aluminum shell and a copper alloy oil-free bushing. It is easy to assemble. The surface of the shell has been professionally treated to ensure corrosion resistance while making the appearance more beautiful.
Dry material: high temperature resistant, suitable for heavy-load and low-speed operation, thin wall and compact.
Resin material: high temperature and chemical resistance (tetrafluoroethylene resin), in compliance with the Food Sanitation Law, suitable for low load and low speed operation.

How to extend the life of oil-free bushings?
To extend the life of oil-free bushings, you can start from the following aspects:

• Choose wear-resistant materials‌: Wear resistance is the key factor affecting the life of oil-free bushings. Materials with high wear resistance, such as high-strength brass, are preferred.
• Optimize working conditions‌: Reduce load, speed, control temperature and corrosion to reduce wear and failure of bushings.
• Correct installation and use‌: Follow the standard installation to avoid additional stress or friction caused by improper use.
• Regular maintenance‌: Clean impurities in time, check wear, and take measures to repair or replace.
• Reasonable design and selection‌: According to actual working conditions, choose suitable materials and shapes to increase life.

Zhejiang Mingxu Machinery Manufacturing Co., Ltd. has been focusing on the manufacture of oil-free bearings for more than ten years. Its products include JDB solid inlaid self-lubricating copper sleeves and wear-resistant plates, automotive standard guide sleeves and accessories, steel-copper sintered bearings, DU oil-free bearings, bimetallic bearings, etc. They are widely used in the automotive industry, engineering machinery, metallurgical equipment, mining machinery, injection molding, molds, textiles, printing and many other machinery manufacturing fields, and are deeply recognized and loved by domestic and foreign customers. Welcome to inquire: [email protected]