PTFE - Sliding Bearings

We have successfully completed supply of 36 Nos of PTFE sliding
bearing s of size 150mm x 300 mm x 25 mm with 1.5 mm ptfe
top hot bonded to neoprene with 12 mm SS plate mirror
finshed for Project in MCT.

Manufacturing of another 96 Nos are under process.

Technical Advantages of Fluorocarbon PTFE Slide Bearings


PTFE has the lowest coefficient of friction of any known solid engineering material including lubricated metal.
There is no stick-slip action
They have indefinite life, since chemicals and weather have no effect on PTFE - moisture absorption is less that 0.01%, even under icing conditions or immersion; and the material is chemically inert.
No maintenance is required. PTFE will never cold weld to itself and therefore requires no lubrication.
The bearings are easily installed, either pre-assembled or on-site.
PTFE Bearings are less bulky than alternative assemblies.
There is no possibility of fatigue failure.
Electrical and thermal insulation minimise galvanic corrosion and heat loss.
Vibrations are dampened.
Small particles which may become embedded do not cause binding of the surfaces.
The slide bearing can accommodate some misalignment in construction without setting up stress corrosion along a leading edge, as can occur in conventional bearings.
The Slide Bearing

Normally, a slide bearing consists simply of two pads of PTFE sliding against each other; for very high pressure applications, a single pad may be used to counterface a polished stainless steel plate. The assembly is designed so that one pad (generally the top pad) is larger than the other by an amount in excess of the expected movement, so keeping the contact area constant throughout the cycle of motion.

- posted by sabu @ 11:50 AM