Liquid nitriding is a subcritical surface enhancement process with one of the longest track records of success of any case hardening technology.
PVD coatings involve the deposition of thin (2-10 microns; 0.0001" – 0.0004") films on the surface of tools and components.
A TESCO sleeve bearing is manufactured from alloy steel with a core hardness higher than 50 RC, and a thermochemical surface treatment that imparts a case hardness higher than 800 HV. The surface treatment contributes excellent frictional properties and scuffing resistance, along with high surface hardness, even at sustained run temperatures up to 500°C.
The TESCO high-temperature sleeve bearing is ideal for both oscillation and rotation, and for applications that involve high loads. In addition to high-temperature bushings, Tesco treatments from HEF are available for pins, rollers, slides, screws and other complex parts.
Note: lubrication of a TESCO high temperature sleeve bearing greatly enhances technical performance. For information regarding high-temperature greases, contact HEF.
|Max Speed (m/s)||Max Temp (°C)||Abrasion resistance||Shock resistance||Corrosion resistance||Low-Maintenance|
For optimal performances of the joint, the surface roughness should be inferior to 0.8 μm Ra. Shafts hardened for 56 to 60 HRC are recommended. HEF propose TESCO HT pins.