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SF-1 Carbon Steel Self-lubricating Bearing

Carbon Steel Self-lubricating Bearing

Features

SF-1 carbon steel self-lubricating bearings used high quality low-carbon steel plate as base, sintered porous bronze as its interlayer and the compound of PTFE and lead as its surface. It offers the property of good self-lubrication, low wear, low friction good sliding characteristics, low noise.

Material Structure

  1. PTFE with lead 0.01~0.03mm
  2. Porous bronze 0.2~0.3mm
  3. Steel backing 0.7~2.3mm
  4. Tin-plating 0.005mm or copper plating 0.008mm

Available forms

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

Application Feature

  • Working under oilless or minim oil state, maintenance free or just need a little maintenance.
  • Resist Abrasion, low coefficient of friction long operating life.
  • Operating in -195℃~+280℃.
  • Good mending, low-noise, non-pollution.
  • Thin wall, light, which can reduce the machine to small.
  • Forming a transferred film during operation to protect shaft.
  • Low demand to the shaft even no surface hardness treatment, which lower the cost of the mating components.
  • No absorption to water/oil, small coefficient of Thermal emption, good thermal conductivity and size stability.
  • The back of the steel strip can be plated with various metal, anti-corrosion. The products now are used in sliding components of different machines, such as auto machines, piston pump, gear pump, textile machine, auto-sides machine, Injection Machine, sports Machine office equipment etc.

Specification

Max Load Static load 250N/mm2   Friction Coef 0.03~0.20 
Low-speed Rotation 140N/mm2 Max linear velocity Dry friction 2m/s 
Rotation、Oscillation 60N/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℃  

Metric standard product tolerance

Inner diameter Wall thickness Thickness Tolerance Outer diameter Diameter tolerance
5≤d＜20 1.0 mm -0.020~+0.005 D≤10 +0.025~+0.055
20≤d＜28 1.5 mm -0.025~+0.005 10＜D≤18 +0.030~+0.065
28≤d＜45 2.0 mm -0.030~+0.005 18＜D≤30 +0.035~+0.075
45≤d＜80 2.5 mm -0.040~+0.005 30＜D≤50 +0.045~+0.085
80≤d＜120 2.5 mm -0.060~-0.010 50＜D≤80 +0.055~+0.100
120≤d 2.5 mm -0.085~-0.035 80＜D≤120 +0.070~+0.120
      120＜D≤180 +0.100~+0.170
      180＜D≤250 +0.130~+0.210
      250＜D≤305 +0.170~+0.260

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