Marginal Bearing mg-4 steel bronze powder with ptfe/fibre self-lubricating bearing a specialized manufacturer of self-lubricating bearings & bushings, Marginal Bearing who was founded in the year 2010, is devoted to developing and manufacturing new self-lubricating bearing materials.

MG-4 Steel Bronze Powder with PTFE/Fibre Self-Lubricating Bearing
  • MG-4 Steel Bronze Powder with PTFE/Fibre Self-Lubricating Bearing
  • MG-4 Steel Bronze Powder with PTFE/Fibre Self-Lubricating Bearing

Suitable for dry running, low coefficient of friction, lower wear,good slidingcharacteristics,the transfer film

created can protect the mating metal surfaces, suitable for rotating and oscillating movement, high chemical resistance, low absorption of water and swelling. The CSB-40 improved the friction and much good wear resistance over the common CSB-50 range under lubricated operation.


◆ Technical Data:

Technical Data
Max.loadStatic250 N/mm
Very low speed 140N/mm
PV (dry running) Max.Roatating oscillating 30N/mm
Short-term operation 3.6N/mm2·m/s
Continuous operation 1.8N/mm ·m/s
Temp. limit -195℃~+280℃
Friction coenncient 0.02~0.20
Max. speedDry running2m/s
Hydrodynamic operation >2m/s
Thermal conductivity 42 W(m·k)-1
Coenncient of thermal expansion 11×10 ·K


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CSB-40 is developed for high duty, oil lubricated, hydraulic applications...Automotive suspension

struts,shock absorbers guide bushing, hydraulic cylinders, gear pumps, motors, axial and radial piston pumps & motors.CSB-40 is designed mainly for using under lubricated conditions and it performs excellent wear resistance and low static/dynamic friction coefficient.


Application