PA/Nylon plain bearings

PA/Nylon plain bearings are lightweight, self-lubricating, and corrosion-resistant plastic bearings that offer a cost-effective alternative to metal bearings in low-to-moderate load and speed applications.
Key Features and Benefits
Self-Lubrication: Nylon bearings inherently possess good sliding properties and often contain solid lubricants (like MoS₂) or are oil-filled, eliminating the need for external lubrication systems.
Corrosion and Chemical Resistance: Polyamide (PA) is highly resistant to most common solvents, oils, greases, petrol, alkalis, and moisture, making it ideal for use in harsh or humid environments where metal bearings would rust.
Lightweight and Quiet Operation: Nylon is significantly lighter than metal, which reduces overall equipment weight. It also dampens vibration, resulting in quieter operation.
Wear Resistance and Durability: They offer excellent wear properties and high impact resistance, leading to a long service life and reduced wear on mating components.
Cost-Effective: While the initial cost can sometimes be comparable to or slightly higher than basic metal options, the reduced need for maintenance and lubrication often results in a lower total cost of ownership over time.
Electrical Insulation: As a plastic, nylon is a non-conductive material, making it suitable for applications that require electrical isolation.
Considerations
Moisture Absorption: Nylon has relatively high moisture absorption compared to other thermoplastics, which can lead to dimensional changes. Designs must account for potential swelling in wet environments.
Temperature Limitations: Standard nylon types (like PA6 and PA66) have a maximum continuous operating temperature of around 100°C (212°F). Glass-filled variants can withstand slightly higher temperatures.
Load and Speed: While suitable for high loads, they are generally intended for low-to-moderate speeds due to heat generation concerns at very high RPMs.
Applications
PA/Nylon plain bearings are widely used in a variety of industries:
Automotive Industry: Found in steering systems, window regulators, power seats, and gearboxes where lightweight, self-lubricating, and quiet components are beneficial.
Material Handling and Conveyors: Used in conveyor systems, pulleys, and robotic arms for their durability and resistance to dirt and dust.
Appliances and Office Equipment: Their quiet operation makes them ideal for use in fans, washing machines, printers, and other commercial/domestic appliances.
Marine and Underwater Applications: The material's resistance to corrosion and water makes it suitable for use in hydrotherapy machines, pool cleaners, and other marine equipment.
Medical Equipment: Employed in adjustable medical furniture and other instruments that require clean, chemical-resistant, and non-magnetic components.