Wear is local. So is the fix.
A liner fails at a point: the impact zone under the chute lip, the belt-side wall of a hopper, the corner of a bucket. The build-up should follow that point, not the plant.
| Application | What fails | Typical build-up |
|---|---|---|
| Chute and transfer point liners | Sliding abrasion under the lip, then impact at the drop zone | 6+4 general; 8+6 at the drop zone |
| Hopper and bin walls | Rubbing wear and hang-up at the corners | 6+4; 8+6 on coarse material |
| Excavator and loader buckets | Impact plus sliding on the floor and side plates | 8+6 or 10+10 on the floor |
| Crusher feed and discharge | High impact, large lumps, occasional jam | 10+10 with heavy backing |
| Mill housings and bearing seats | Erosion plus load, repair rather than replacement | BT-CW-BE, cut to the seat |
| Grab buckets and hopper walls at ports | Wet abrasive material, salt atmosphere | BT-CW-BS stainless backing |
These are starting points, not rules. The thickness that lasted four years on one chute may be overkill on another that sees a different lump size and drop height.
What to measure before you order
Four numbers close most of the gap between a drawing and a working liner.
- Service life of the old linerHours or months, and what it was made of.
- Lump size and drop heightThe two figures that separate sliding wear from impact.
- StructureBolt size, hole spacing, and the weight the wall or bucket can carry.
- EnvironmentWet or dry, temperature, and whether salt or acid is present.
Where a thicker plate is the wrong answer
If the structure is already at its load limit, adding wear allowance adds weight to the wall, the bolts and the bucket. The alternative is a harder face at the same thickness, or a smaller liner area at the point of wear.
We will say so when the drawing asks for a section the structure cannot carry. That conversation is cheaper before the plate is welded than after it is bolted on.
Send a photo of the worn part.
With the overall size and the material handled, a photo is usually enough for us to propose a section.
Send it