Anti-Fretting Grease
Protection against micro-oscillatory movement wear — railway, aerospace and vibration machinery
Specific grease for the prevention of fretting — a wear mode produced by small-amplitude oscillatory micro-movements in nominally stationary joints subjected to vibration. Fretting generates iron oxide (red powder) at the contact interface, reduces press-fit interference and causes pitting in apparently well-lubricated bearings. Occurs in bearing press fits, turbine blade contact surfaces, wind blade anchors and railway vehicle axles. Anti-fretting grease contains specific additives (Mo, Bi, organic sulphides) that resist repeated micro-movement shear without degrading.
Specifications
- Temperature range
- -40°C / +150°C
- NLGI grade
- 2
- Thickener
- Calcium Sulphonate Complex or Lithium Complex + oscillating additives
- Family
- By application
Characteristics
- Specific anti-fretting formulation with Mo/Bi additives — resists micro-movement
- Calcium sulphonate complex — maximum resistance to oscillating loads and water
- Reduces oxide generation in press fits and vibration-subjected joints
- High mechanical stability — does not degrade under repeated shear
- Compatible with tapered roller and deep groove ball bearings
Typical applications
- Bearing press fits on locomotive and wagon axles
- Contact surfaces of gas turbine blades and discs
- Blade joints in wind turbines (blade root — hub)
- Suspension element bearings in heavy vehicles (vibration)
- Expansion joints and anchors in structures with industrial vibration
Sectors
- Railway (running gear & traction)
- Aerospace & gas turbines
- Wind energy (blade joints)
- Defence — high-vibration vehicles
- Heavy machinery with continuous vibration cycles
Key advantages
- Real savings: avoiding a railway axle or wind blade failure is worth thousands of €
Need a datasheet or sample?
Our technical team can send you the safety datasheet, provide evaluation samples or study a specific formulation for your process.