The F20 Story
Fechnerplas 20 (F20) is an exciting breakthrough in the Sheedy Bearing concept. Our ongoing research and development programme has resulted in this phenolic resin bonded bearing material, embodying all of the key elements required in the bearing field, temperature resistance, low thermal co-efficient of expansion, high thermal conductivity, exceptional load bearing capability, virtually no deformation within the bearing load range, whilst retaining the great advantage in plastic bearing elements, resistance to shock and vibration.
Why phenolic bonding, why is it important?
Phenolic resins are amongst the toughest of the plastic bonding media available to withstand the effects of heat, vibration, shock and heavy loads, without losing strength and resilience. They have extremely high resistance to oils, greases, water, steam, cleaning chemicals and other common chemical reagents. A common use of phenolics is in the moulding and bonding of brake linings, an extremely taxing application for any material.
Some of the impacts
With this new material, we now have a material to take the Sheedy Bearing into the 1400 RPM and higher speed range. Running this material in water or with a forced water lubrication system, brings the Sheedy 1000 Bearing into the world of metal bearings without the problems associated with metal bearings.
The internal clearances in the bearing for the 1000 Series of bearings have been significantly reduced, resulting in a "tighter" performance than that which was previously possible. Given a thorough understanding of your product or of the problems you need to overcome, can help us to help you in reaching an optimum solution.
This bearing material, F20, performs well in any high load application to which the Sheedy Bearing concept is suitable. Running environment temperatures of up to 316 degrees Celsius in oxidising or reducing atmospheres, are readily achieved. The dry co-efficient of friction is below 0.2 and a compressive strength of 14 000 to 20 000 Mpa is readily achieved, with a Shore hardness of 62 to 95. The material is extremely stable, hard, tough and slippery; it is an ideal bearing material.
