Fenner Precision manufactures three basic styles of Fenlon™ low friction fabrics for use in self-lubricated bearings, slip clutches and drag brakes.
- Fabric wear face composites are manufactured from PTFE and secondary fiber sateen weave fabrics treated with thermosetting resins.
- Fiber flock face composites are manufactured from plain weave fabrics treated with thermosetting resins reinforced with PTFE fiber flock particles.
- Powder face composites are manufactured from plain weave fabrics treated with thermosetting resins reinforced with PTFE powder particles.
| Fabric |
Loomstate |
12, 13 & 48 |
5 to 400 |
.010" to .020" |
| Fabric |
Pre-Shrunk |
12, 13 & 24 |
5 to 400 |
.010" to .020" |
| Fabric |
Resin Impregnated |
12, 13 & 24 |
5 to 400 |
.010" to .020" |
| Fabric, Flock, Powder |
Adhesive Coated |
12, 13 & 24 |
5 to 400 |
.010" to .030" |
Custom Low Friction Fabrics Specification Range
The load/velocity rating of bearings containing Fenlon™ liners is governed by the thermal build-up at the glue line. The maximum glue line temperature is dependent on the liner type and is typically in the range 275°F (135°C) to 500°F (260°C). In slow speed, intermittent speed applications, the liner can carry dynamic loads up to 25,000 psi. In high, continuous speed applications the load is much lower.
Depending on the application type, use and load, 150 ft/min is generally recommended as an upper-velocity limit. However, speeds of 700 ft/min can be achieved under very low-load conditions.
In slow-speed, high-load applications, Fenlon fabric liners decrease friction as load, temperature and speed increase. At low loads, the coefficient of friction is approximately .10. This decreases to .03 as load increases to 20,000 psi.
In addition, Fenlon liners exhibit little or no stick-slip at start up.
