A proven method for accurate sizing and finishing of bores
The cold working action will improve minor surface irregularities and tool marks resulting in a low microinch surface finish.
How the ID Multi-Roller Burnishing Tool Works
The ID Multi-Roller Burnishing Tool consists of a cage, which retains tapered rolls rotating around on an inversely tapered mandrel. Within the work-piece, the tool is sized so that the roll develops a pressure that exceeds the yield point of the softer work-piece.
Three Roll Designs For Close Approach Applications
![id-burnishing-through-style](https://www.elliott-tool.com/wp-content/uploads/2023/12/id-burnishing-through-style.png)
Through Rolls
Rolls with greater radius relief are used for through holes (Roll Style 1). These tools are self-feeding and a release clearance is required.
These rolls are interchangeable between blind and through cages.
![id-burnishing-blind-style](https://www.elliott-tool.com/wp-content/uploads/2023/12/id-burnishing-blind-style.png)
Blind Rolls
Blind rolls burnish closer to the bottom of a hole or bore than through rolls (Roll Style 4).
These rolls are interchangeable between blind and through cages.
![id-burnishing-bottoming-style](https://www.elliott-tool.com/wp-content/uploads/2023/12/id-burnishing-bottoming-style.png)