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DU BUSH

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January 21, 2026
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Brief: Thinking about an upgrade for your construction machinery? This short demo helps you evaluate the fit. Watch as we showcase the 235531001 DU Bush Composite Metal PTFE Bush, explaining its unique three-layer material structure and demonstrating its self-lubricating properties for pump truck applications. You'll learn how this maintenance-free component delivers exceptional wear resistance and performance under high loads.
Related Product Features:
  • Features a three-layer composite structure with a steel backing, sintered bronze middle layer, and PTFE sliding surface for superior performance.
  • Offers self-lubricating properties, eliminating the need for external lubrication systems and reducing maintenance requirements.
  • Provides exceptional wear resistance, ensuring long service life even under demanding operating conditions in construction machinery.
  • Withstands a wide temperature range from -200°C to +280°C, making it suitable for various environmental applications.
  • Handles high specific load capacities up to 250 N/mm static and 140 N/mm dynamic at low speeds for reliable operation.
  • Available in standard cylindrical designs with options for special configurations, PTFE inside/outside, and lead-free versions.
  • Features low friction values between 0.04 to 0.2, contributing to efficient operation and reduced energy consumption.
  • Designed specifically for pump truck applications in the construction industry, ensuring optimal compatibility and performance.
FAQs:
  • What are the main advantages of using the DU Bush Composite Metal PTFE Bush in pump trucks?
    The DU Bush offers three key advantages: self-lubricating properties that eliminate the need for maintenance, exceptional wear resistance for long service life, and the ability to handle high specific loads up to 250 N/mm static, making it ideal for demanding construction machinery applications.
  • What materials make up the three-layer structure of this composite bushing?
    The bushing features a steel backing layer (0.7-2.3mm) for structural strength, a porous bronze middle layer (0.2-0.3mm) for thermal conductivity, and a PTFE with copper sliding layer (0.01-0.03mm) that provides the self-lubricating properties, with an optional tin or copper plating for corrosion protection.
  • What temperature range and operating conditions can this bushing withstand?
    This DU Bush can operate in temperatures ranging from -200°C to +280°C and handle maximum sliding speeds of 12.5m/s. It supports Pv values up to 3.6N/mm².m/s dry and 50N/mm².m/s with lubrication, making it suitable for various harsh operating environments in construction machinery.
  • Are custom designs available for specific application requirements?
    Yes, in addition to standard cylindrical bushings, we offer special designs produced at short notice. Options include lead-free types and configurations with PTFE on either the inside or outside surfaces to meet specific application needs in pump trucks and other construction equipment.
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