The torques Mmax specified in the tables below refer to shock-free processing (e.g. threaded cutting). For processes involving major shock loads (e.g. milling or multi-edge knocking), a value reduction of up to 50% and more needs to be taken into account. The values nmax and Pmax rendered are guideline values for short-time operation.
The permissible relative operating duration depends
At a charge of about 60% of the maximum values the working life calculated amounts to approx. 2.000 hours Spindle units with gears produce more noise at higher speeds!
Determination of the maximum permissible cycle times per minute EDmax.
The maximum permissible cycle times per minute may not be under any circumstances exceeded.
CTmax.: maximum permissible cycle times in percent per minute (%/min.)
Initial Start-up: To ensure long tool life it is important to properly 'run-in' the tools. This procedure serves to reduce the internal friction in the driven unit and to evenly distribute the grease in the precision bearings.
Tools with internal coolant through the spindle (i.C.): To avoid premature wear and damage to the seal system we recommend to filter the coolant to 40 µm minimum.
Filter grades of 40 µm worked in operation with very good results. The maximum permissible coolant pressure can be taken from the technical data of the driven toolholder.
Driven Toolholders with internal coolant through the spindle (i.C.) should never run without coolant. The coolant should flow through the tool, before the tool drive is switched on. Running in dry condition damages the internal seals.
Service interval: The tool life of the driven toolholder depends strongly on the application. Wear parts such as bearings and seals should be exchanged. We recommend to send the tools at least once annually to our service center for cleaning and regreasing. Tools with internal coolant through the spindle should be serviced every 6 months.