This clip is a straight shop-floor test: a CBN insert turning a mill roll, filmed at the machine with no rehearsal and no editing. It is the kind of trial a roll shop runs before committing a grade to a production campaign.
What the clip shows
- CBN insert in a single-point turning setup
- Mill roll body as the workpiece, hard-turned in place
- Chip flow and insert contact visible through the cut
Why this insert suits the cut
Mill rolls are large hardened forgings or castings. Once the surface is in the hardened range, carbide struggles with the interrupted load at the roll ends, so a CBN grade is the normal starting point for both roughing and finishing passes on the body.
Where this part is used
Rolls of this type run in hot and cold rolling lines, paper machines and rebar mills. The finishing pass on the body decides how long the roll holds its profile between regrinds.
What to send with an inquiry
- Roll drawing with body diameter and hardness
- Incoming stock and the finish you must reach
- Machine, holder and current cycle time