L'usinage des galets et bandages peut traiter les avaries suivantes:
- Facets , streaks and flaking
- Material repressions and flatness defects
We intervene to treat also: excessive tapers, flatness defects, bearing defects.
Facets
They are usually due either to:
- A meshing problem in the case of a pinion/crown harness
- Differences in diameter in the case of friction drive
- A bad adjustment or a bad lineage
Novexa on-site machining treats these defects permanently.
Scales
This phenomenon appears with high Hertz pressures. Span faults, underdimensioning, flatness faults and shoulders very often generate such damage.
These damages are to be taken seriously because their development occurs in under layers, with an irreversible character.
We recommend machining to remove them.
The streaks
“These types of damage are very common and can appear for various reasons” :
- Presence of graphite combined with an abrasive environment
- Voile important on rolling elements
- Insufficient hardness on the rolling elements
- Excessive and opposite steering of 2 rollers on the same tire
Repressions of matter
Several cases can generate such a deformation:
- Change of lubrication mode without changing the setting
- High sliding forces combined with too high a coefficient of friction
- Lack of parallelism of the rollers
- Insufficient hardness (end creep)
Shoulders and flatness
Shoulders and flatness defects cause axial locking of the tube and can generate:
- The appearance of cracks at the ends
- Concave/convex wear on tires and gears
- A stress on the bearings with risk of breakage in production
