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Metallic Self-Lubricating Bushings

ASTT90 Wrapped Bronze with thru holes Series - Metric

The ASTT90 Series is derived from AST090 bearings and similarly are wrapped of a cold formable homogenous bronze (CuSn8). The major difference is that the AST090 Series’ indentations on the sliding surface are replaced by through-holes This allows the ASTT90 Series to have a greater capacity to collect the lubricant compared with the indentations. These through holes serve as lubricant reservoirs to rapidly build up a lubrication film in the startup movement and subsequently reduce the startup friction. The wrapped bronze material is suitable for the construction and agriculture industries where high load and slow movement are occurring. The bushing surface of the ASTT90 is reduced by 15% in consideration of the through-holes.

ASTT90 wrapped bronze w/ holes bushings

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  • Easy fitting and lubrication
  • High load capacity
  • Excellent wear resistance with lower friction
  • High level of thermal conductivity
  • Minimum overall dimensions
  • Chemical resistance
  • Extended service life and lubrication intervals compared to the AST090 Series Bushings
  • Free choice of lubricant
  • Collection of dust and rub off particles in the holes

The ASTT90 Series Bushings are widely applied in hoisting and other construction machines, automobiles, tractors, trucks, machines tools and some mining engines. It can be fabricated into bushings, half bushings, flanged bushings, thrust washers, spherical bushings and more.

With over 425 products to choose from, the ASTT90 Series bushings are further sub-categorized by the following:

  • ASTT90 Series – Straight Bushings
  • ASTT90-F Series – Flanged Bushings

AST Bearings is proudly presenting our new certificates for both the NJ and CA locations: AST Bearings’ ISO 9001:2015 Certificates

To learn more about what the ISO 9001 standard is, the differences between the 2015 and 2008 versions, and how AST verifies customer satisfaction: Learn About AST Bearings’ certification to ISO 9001:2015

Need Assistance Selecting the Proper ASTT90 Wrapped Bronze with thru holes Series?

If you need help in selecting the best products for your particular application, please remember that design engineering and application assistance are available from AST as part of our value-added services designed to make your job easier.

Value added services

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