MINIMAL QUANTITY LUBRICATION MQL

Technical information to the new Guhring MQL standard
With HSK-tool holders to the new Guhring MQL standard, the diameter d6 is modified to DIN 69893-1
to a length l1 with the diameter d1.
Table 1: modified dimensions – HSK to DIN 69893-1
Table 2: Threads and widths across flats of MQL length adjustment screw
26 Minimal quantity lubrication MQL
l 1
d 1
Nom. size
HSK
40 50 63 80 100
d6 7.0 +0.1 8.0 +0.1 10.0 +0.1 10.2 12
l1min 8 8 6 6 4
Within the HSK sizes MQL tool holders are listed the respective threads for the MQL length adjustment screw and
the respective width across flats. Some of these dimensions do not correspond with dimensions of tool holders for
conventional cooling.
HSK-A... Clamping-Ø
d1
mm
G SW
40 6 - M 7x1 3
40 8 8 M 7x1 3
40 10 10 M 8x1 3
40 12 12 M 10x1 3
40 14 14 M 10x1 3
40 16 16 M 12x1 3
50 6 - M 8x1 4
50 8 8 M 8x1 4
50 10 10 M 8x1 4
50 12 12 M 10x1 4
50 14 14 M 10x1 4
50 16 16 M 12x1 4
50 18 18 M 12x1 4
50 20 20 M 16x1 4
63 / 80 / 100 6 - M 10x1 4
64 / 80 / 100 8 - M 10x1 4
63 / 80 / 100 10 10 M 10x1 4
63 / 80 / 100 12 12 M 10x1 5
63 / 80 / 100 14 14 M 10x1 5
63 / 80 / 100 16 16 M 12x1 5
63 / 80 / 100 18 18 M 12x1 5
63 / 80 / 100 20 20 M 16x1 5
63 / 80 / 100 25 25 M 16x1 5
63 / 80 / 100 32 32 M 16x1 5