The countersinking of the base hole is nothing but its extension without changing the diameter. The countersinking can be partial or total, depending on the needs of the job. In both the first and the second case, the use of on site machining solutions enables us to meet all the criteria of standardisation of the hole at a much reduced cost and lead time. You do not need to in fact make the hardships of time-consuming and costly dismantling, transport and reinstallation of elements undergoing modernisation.
Common situation is simply no match of each part. Often the older generation element does not correspond to the new, redesigned according to other dimensions and needs, or as a result of the use of the existing hole depth does not meet its purpose. Often the use of various devices makes it necessary to unify all associated holes, which is deepening to the appropriate depth. Machining of existing holes without creating new structures is not only more profitable, but also allows for the current verification of the results of the work, which makes it possible to adjust.
The speed and efficiency of such treatments, preserving full precision of dimensions and surface structure, results in the right fit and the possibility of further, proper operation.