Applications and Advantages of Engineering Plastic Bearings: Understanding the Differences Between Japanese and Chinese Bearings

Key Advantages of Engineering Plastic Bearings

Applications and Advantages of Engineering Plastic Bearings: Understanding the Differences Between Japanese and Chinese Bearings

With the rapid advancement of plastic technology, plastic bearings have become increasingly common in various applications. Engineering plastic bearings, known for their corrosion resistance, lightweight properties, and low friction, are now widely used across multiple industries. This article will explore the core advantages and applications of engineering plastic bearings and highlight the differences between Japanese brands (DAIDO, OILES) and Chinese products.

What Are Engineering Plastic Bearings?

Engineering plastic bearings are made from thermoplastic materials and are designed to support rotational movement within machinery. The inner and outer rings are typically made from polymer materials such as POM (Polyoxymethylene), PE (Polyethylene), PP (Polypropylene), PC (Polycarbonate), PTFE (Polytetrafluoroethylene), and PA (Nylon). These materials offer excellent heat and chemical resistance, making them ideal for environments that require reduced friction, noise, and weight.

Introduction to POM (Polyoxymethylene)

Polyoxymethylene (POM) is one of the five major engineering plastics widely used in the technology and machinery industries. Among thermoplastics, it offers performance closest to that of metal. POM is known for its strong chemical resistance, withstanding weak acids and bases, and is nicknamed “plastic steel” due to its strength and durability.

Core Advantages of Engineering Plastic Bearings

Compared to traditional metal bearings, engineering plastic bearings offer significant advantages in design flexibility, corrosion resistance, and weight. Below are the five key benefits:

1. Lightweight

Plastic bearings are significantly lighter than their metal counterparts, reducing the overall weight of equipment — ideal for industries like automotive and aerospace that prioritize weight reduction.

2. Excellent Corrosion Resistance

Unlike metal bearings that require anti-corrosion treatments, plastic bearings are naturally rust-resistant and perform better in corrosive environments.

3. Low Noise

Metal bearings may produce grinding noise due to wear. In contrast, plastic bearings, made from softer materials, reduce operational noise and create a quieter working environment.

4. Low Friction

Plastic bearings maintain a low coefficient of friction even after prolonged use, helping extend the lifespan of machinery and components.

5. Greater Flexibility

Plastic bearings offer greater design flexibility and adaptability compared to rigid metal bearings.

Industries That Use Plastic Bearings

• Machinery: Gears, conveyors, cam followers, valves, pump housings, and machine tools.
• High-Tech: Optical instruments, electronics, and robotic arms.
• Aerospace: Folding tables, adjustable seats, and maintenance-free self-lubricating bushings.
• Food Machinery: Conveyor belts, filling machines, packaging machines, and sprayers.
• Electronics: Hard drives, fans, optical drives, home appliances, cameras, and power tools.
• Automotive: Buckles, seatbelt clips, dashboard parts, exhaust valves, wiper components, door locks.
• Consumer Goods: Apparel parts, baby stroller components, luggage straps, sliding windows, outdoor gear, door hardware.

Comparison: Japanese vs. Chinese Plastic Bearings

AT | Recommended Engineering Plastic Bearings

AT Bearing is a trusted distributor of plastic bearings, specializing in high-quality engineering plastic bearings. We supply products from major global brands, including both premium Japanese brands like DAIDO and cost-effective Chinese alternatives. If you are in the machinery, high-tech, food processing, or electronics industry, contact us today to learn more about our engineering plastic bearing solutions.