Low-Friction Split-Type PTFE Steel-Bronze Bushings & Flange Bearings — Maintenance-Free Metal-Polymer Bearing Replacement Solutions

Low-Friction Split-Type PTFE Steel-Bronze Bushings & Flange Bearings — Maintenance-Free Metal-Polymer Bearing Replacement Solutions

Hello!

If you’re looking for a low-friction, split-type PTFE (Polytetrafluoroethylene) steel-bronze composite bushing, or a metal-polymer self-lubricating bearing used in hinges and industrial bearing replacements, this guide will help you find the right solution.

These maintenance-free bushings are designed to replace traditional lubricated bearings, offering self-lubrication, extended service life, and reduced maintenance costs. Typical equivalents include viiplus company ptfe type composite bushings, which can be directly interchanged with conventional lubricated bearing designs.

1. Product Structure & Composite Design

These PTFE steel-bronze bushings feature a multi-layer composite structure to ensure durability, load capacity, and low friction in compact assemblies:

• Backing Layer (Steel / Stainless Steel)
  Provides structural strength, dimensional stability, and excellent thermal conductivity. Options include carbon steel or stainless steel (SS304 / SS316).

• Intermediate Layer (Sintered Bronze Powder, 0.20–0.35mm)
  A porous bronze layer enhances bonding strength and retains solid lubricant for consistent performance.

• Sliding Layer (PTFE + Fillers, 0.01–0.03mm)
  A lead-free, eco-friendly PTFE compound that forms a transfer film during operation — ensuring true dry-running self-lubrication.

2. Product Types & Applications

All types are designed for dry running with a low friction coefficient of 0.05–0.10, making them ideal for medium-speed, high-load, and frequent start-stop applications.

3. Key Features & Technical Advantages

• Low Friction & High Efficiency – PTFE layer creates a solid lubricant film, reducing energy loss and improving efficiency by up to 30%.

• Maintenance-Free Operation – No need for additional grease or oil; consistent performance over long service intervals.

• High Load & Wear Resistance – Steel backing supports high static and dynamic loads, while the bronze interlayer distributes pressure evenly.

• Corrosion Resistance & Wide Temperature Range – Optional stainless steel backing ensures long-term performance in humid or corrosive conditions.

• Direct Replacement Compatibility 4. Typical Industrial Applications

• Hinges and pivot joints in machinery or structural assemblies

• Hydraulic and pneumatic cylinder guides

• Automation and conveyor systems

• Agricultural machinery, automotive clutch, and brake systems

• Casting machines, metallurgical and heavy-duty equipment

5. Replacement & Customization Options

Viiplus offers custom-engineered bearing replacements according to your original dimensions, load conditions, and application environment.
Available options include:

• Custom inner/outer diameters and wall thickness

• Split-type or one-piece construction

• Flange, groove, or slot modifications

Conclusion

Split-type PTFE steel-bronze bushings and metal-polymer self-lubricating bearings are the next-generation solution for industrial equipment upgrades.
They enable maintenance-free, energy-efficient, and long-lasting operation — perfectly suited for OEMs and maintenance engineers seeking reliability and cost optimization.

For technical support or replacement recommendations, contact Viiplus Self-Lubricating Bearing Solutions to receive a customized proposal for your application.