TECAPEEK PVX black
Bearing grade PEEK modification
TECAPEEK PVX black is a modified PEEK material using Victrex® PEEK 450 or Syensqo KetaSpire® KT-820 (fomerly Solvay) and is classified in the same performance category as Victrex® PEEK™ FC30.
TECAPEEK PVX black was developed especially for bearing and sliding applications. It is based on a PEEK polymer that has been modified with 10% each of PTFE, graphite and carbon fibres. It combines the properties of a high-grade matrix material with special, wear-improving additives. Compared to all PEEK modifications, TECAPEEK PVX black has the lowest coefficient of friction, and shows higher wear resistance. In addition, a comparatively higher dimensional stability under thermal load is achieved. The reinforcement by means of carbon fibre and graphite in low friction PEEK plastic also ensures higher mechanical properties than is normally seen with unfilled PEEK.
Furthermore, it is helpful for a PEEK bearing material to have improved thermal conductivity in order to dissipate the frictional heat generated on the component as much as possible, thus avoiding thermal overload or overheating. In particular, the carbon fibre and graphite fillers in TECAPEEK PVX black help ensure improved thermal conductivity of this PEEK bearing grade. It also results in thermal conductivity that is three times higher than what we find in standard PEEK natural.
For bearing and sliding applications, the resistance to high PV loads is particularly remarkable.
A comparison between TECAPEEK natural (unfilled PEEK) and TECAPEEK PVX black (PEEK bearing) also shows the differences relative to the coefficient of friction, depending on the number of cycles and different sliding speeds. The tests were carried out on a steel shaft Ø 4mm, at sliding speeds of 0-22 mm/s and a load of 30 N.
PEEK PVX also offers outstanding tribological performance properties when used with non-metallic mating partners. At the same time, excellent chemical resistance is maintained. It can be used dry or with the application of an external lubricant.
This PEEK bearing modification, TECAPEEK PVX black, was developed for use under high loads and speeds in harsh environments and can also be operated under continuous exposure to hot water or steam.
As with all Ensinger PEEK materials, we can confirm that our bearing grade TECAPEEK PVX black meets the limitations imposed by RoHS Directive 2011/65/EU Restriction of Hazardous Substances in electrical and electronic equipment.
