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SF-2S Marginal Pb-free Self-lubricating Bearing

Marginal Pb-free Self-lubricating Bearing

Features

SF-2S Marginal Pb-free self-lubricating bearing based on steel backing, sintered porous bronze as its interlayer, surface rolled by acetal resin and polymer material constaining oleophylicity fiber and perform well on low friction factor, well wear performance and oil free condition lubrication. It has been widely applied to winding engines, printing and dyeing machinery, coal-cutters, punch, winch truck, traveling crane etc.

Material Structure

  1. POM with fiber 0.3~0.5mm
  2. Porous bronze 0.2~0.3mm
  3. Steel backing 0.4~2.2mm
  4. Copper plating 0.008mm

Available forms

Bushes, flanged bushes, WC thrust washers, strip and other non-standard parts and so on.

Application Feature

  • Good load capacity and anti-wear.
  • It is used in high load capacities and low
  • It is used in high load capacities and low speed with rotational,oscillating or frequent stop-start motion.
  • It can work long time without oil in the condition of boundary lubrication,under oil or grease lubrication interval, the work is longer.
  • It is machinable for the thicker of POM.
  • The bushes can be applied in auto chassis,forging machine, metallurgical, civil engineering, power station, strip rolling industries etc.
  • SF-2S is widely used in the machine that Lead is unacceptable.

Specification

Max Load Static load 250N/mm2   Friction Coef 0.03~0.20 
Low-speed Rotation 140N/mm2 Max Line Speed Dry friction 2.5m/s 
Rotation、Oscillation 70N/mm2 Oil Lubrication >2m/s 
Max PV Dry friction 3.6N/mm2．m/s Thermal conductivity 42W(m．K)-1 
Oil Lubrication 1.8N/mm2．m/s Coefficient of thermal expansion 11x10-6/K 
Operation Temp. -195℃~＋280℃  

SF-2

SF-2Y

SF-2S