PTFE Coated Oilless Bearing Dry Bush DU Bushing

Size: Customized

Color: Brown/Black

Certification: ISO9001: 2000

Hardness: 90-95 Shore A

Operating Temperature: -40–120℃ (depending on material)

Size: Depends on excavator model

OEM: Accepted

Tolerance: +/-0.01mm to +/-3.05mm

Category:

Description

Our PTFE Coated Oilless Bearings (DU Bushings) redefine reliability in dry-running environments where traditional lubrication is impractical. Engineered with a tri-layer composite structure—steel backing, sintered bronze intermediate layer, and a PTFE (Teflon®) surface—these bearings deliver exceptional self-lubrication, high load capacity, and resistance to extreme temperatures, corrosion, and wear. Ideal for gear pumps, hydraulic systems, and high-speed machinery, they ensure smooth, noise-free operation in automotive, industrial, and marine applications.

Key Features & Benefits

1.Advanced Tri-Layer Design

  • PTFE Surface: Provides dry-film lubrication, eliminating the need for oils or greases.
  • Sintered Bronze Layer: Distributes friction evenly and enhances load distribution.
  • Steel Backing: Ensures structural rigidity and dimensional stability.

2.Self-Lubricating & Maintenance-Free

  • Operates without external lubrication, reducing maintenance costs and contamination risks.
  • Low friction coefficient (<0.1) even under dry or marginal lubrication.

3.Extreme Temperature Resistance

  • Withstands temperatures from -200°C to 260°C (-328°F to 500°F).
  • Resists thermal deformation and cold-flow issues.

4.High Load & Wear Resistance

  • Supports radial loads up to 60 MPa and axial loads in compact designs.
  • PTFE surface minimizes wear, extending component life by 3–5x vs. traditional bearings.

5.Corrosion & Chemical Resistance

  • PTFE coating is inert to acids, solvents, and corrosive fluids.
  • Ideal for food processing, chemical plants, and marine environments (FDA-compliant options available).

Applications

  • Automotive: Transmissions, steering systems, engine mounts, and CV joints.
  • Industrial Machinery: Gear pumps, compressors, turbines, and conveyor systems.
  • Hydraulic Systems: Pumps, valves, and actuators requiring dry-running performance.
  • Food & Beverage: Clean-environment bearings for packaging and processing equipment.
  • Marine & Offshore: Propulsion systems, winches, and deck machinery.
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