Product Overview
SF-1 Bushing (also known as DU Bushing) is a premium self-lubricating composite bearing manufactured in China. It is designed to perform reliably in conditions where oil or grease lubrication is difficult or impossible.
Material Structure
Inner Surface (Friction Layer): Modified PTFE (Polytetrafluoroethylene) mixed with lead or other wear-resistant fillers. This provides an extremely low coefficient of friction.
Middle Layer (Bonding Layer): Sintered Spherical Bronze Powder. It enhances thermal conductivity and firmly bonds the PTFE layer to the steel backing.
Outer Layer (Support Layer): Low Carbon Steel. Provides high mechanical strength and load capacity.
Surface Finish: Copper or Tin plated to prevent corrosion.
Typical Applications
Automotive: Shock absorbers, door hinges, steering gear thrust washers.
Industrial: Hydraulic gear pumps, piston pumps, printing machines, textile machinery.
General: Fitness equipment, office chairs, agricultural machinery.
Packaging & Shipping
Packaging: Anti-rust paper + Plastic bag + Carton Box + Pallet (Standard Export Packaging).
Lead Time: 7-15 days depending on quantity.
OEM Service: We support customization of non-standard sizes and drawings