Extended, Wide & Narrow Edges

They are the variant labels carried by the source entries: extended means longer than the standard reference for the same machine, wide means more cutting width, and narrow means less. They identify how an entry was catalogued rather than a standardized dimension class, and one entry can carry two labels at once, as the extended thick reference does. The practical length and width differ between brands, so they are confirmed by measurement rather than read from the label.

The narrow label marks a reference narrower than the standard edge for the same machine. What it suits depends on the bucket it goes on, so the decision is made against the bucket drawing: where the bucket itself has been narrowed, where the sides have to stay clear of a wall or a form, or where a narrower cut is wanted. Sending the bucket width and the measured width of the part being replaced is enough to review it.

The edge is bounded by the bucket, so the plate changes where the bucket cuts and how the corners are worked rather than the bucket volume itself. Treat any change in cutting width as something to confirm against the bucket drawing instead of assuming it from the variant name. Where the bucket sides or the corner plates have been modified, include those details, because the edge has to sit correctly against them.

Where a plate has to be shortened, the cut end and any new holes have to be re-made to the same bevel and countersink, and the material at a cut and around a drilled hole is no longer in the condition it left heat treatment. That change is therefore agreed before it is done rather than improvised on site. If the length has to be different from the catalog reference, send the required dimensions and it can be reviewed as a custom part.

Labels can combine. The catalog carries an entry marked extended and thick together, which shows that a variant can change more than one dimension. Thickness matters on its own terms because it sets the wear volume and the clamping height at the bolts, so state the thickness required even when the length and width are already fixed. Where the thickness is being changed from the existing part, say so, because the fastening is affected.

Send the machine model, the standard or variant reference if it is known, and the measured length, width and thickness of the part being replaced. Add the hole pattern - side edge to first hole centre, the centres between holes, hole diameter - and which side carries the bevel. A photograph of the mounted edge with a tape measure, and the quantity required, complete the picture so the variant can be confirmed rather than assumed.