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ATC303 Material Composition

ATCORP, ATC-303 Bimetal bearing material structure have steel backing and sliding layer of CuPb24Sn1 material. The lead content in CuPb24Sn1 provides good lubricity and anti-seizure properties, which helps to reduce friction and wear between the bushing and the rotating or sliding component.Steel Backing provides strength to Bimetal structure while soft Sliding layer of bronze helps to improve lubrication. Good resistance to fatigue strength and high load capacity, good performance of sliding. Can be set in oil holes, grease indents or oil pockets.Alloy hardness 40 HRC.ATC-303 Material comes with three options like tin flash, copper flash or Zn Flashing also to avoid rusting of steel during transit /storage

ATC100
Performance IndexUnitsOil Lubricated
Max Dynamic LoadMpa120
Working Temperature°C-40 - +250
Max Linear Velocitym/s10
Max Pv Valuesm/s x Mpa10
Min Alloy Layer HardnessHB40
Min Mating Axis hardnessHRC45
Coefficient of friction0.06 – 0.16

Benefits of ATC303

  • The alloy exhibits good resistance to wear, making it suitable for applications with heavy loads and low speeds.
  • This characteristic helps reduce friction and minimize wear between moving parts, translating into a longer lifespan for the bushing and reduced downtime.
  • The alloy has a high resistance to fatigue strength and can withstand significant radial and axial loads.
  • Bronze, in general, is naturally corrosion-resistant, making bronze bushings suitable for harsh and corrosive environments, including exposure to moisture, chemicals, and saltwater.
  • The self-lubricating properties, enhanced by the lead content, can reduce or even eliminate the need for frequent external lubrication, thereby reducing maintenance costs.
  • Leaded tin bronze alloys are generally known for their good machinability, simplifying manufacturing and customization processes.
  • Can be machined to achieve tighter tolerances up to certain thickness.