Technical Information

Technical Information
Technical Information
KM Micro /KM Mini Manual Clamping System
KM Micro/KM Mini Clamping Operating Instructions (KM12–KM25)
Locking
Before inserting the KM Micro and KM Mini unit into the clamping mechanism
(Figure 1), clean the contact face and taper. KM Micro and KM Mini manual
clamping units require a torque wrench for proper operation. Turning the torque
screw clockwise locks the cutting unit in position. For maximum safety, tighten
the torque screw to the specified torque. Using a torque wrench ensures that the
proper clamping forces are exerted.
KM Micro/KM Mini Manual Clamping System • Operating Torque
KM
size
torque
(ft. lbs.)
torque
(Nm)
Operating Position
With the torque screw and nut to the proper torque, coincidental cones locked
in position, and the face and self-locking taper fully engaged, the cutting unit
and clamping unit are rigidly secured together (Figure 2).
Unlocking
Rotate the torque screw counterclockwise until initial resistance is felt. In this
position, the locking cones are free of the cutting unit, but the taper interference
is still holding the KM unit in the clamping unit. At this point, the bump-off angle
is in position to free the cutting unit from the interference fit.
Continue to rotate the torque screw slowly until the cutting unit is no longer
making face contact (Figure 3) and is released from the taper. The torque screw
will stop rotating and more resistance will be felt. Do not turn the torque screw
any further.
CAUTION
Continuing to rotate the torque screw may damage
the clamping components.
actuation
drive size
KM12 5–6 7–8 25IP
KM1612 5–6 7–8 25IP
KM16 7–8 10–11 27IP
KM2016 7–8 10–11 27IP
KM20 14–16 19–22 5mm
KM2520 14–16 19–22 5mm
KM25 25–30 34–40 6mm
KM3225 25–30 34–40 6mm
Figure 1
Contact Face
CAUTION
Over tightening can cause damage to the clamping mechanism.
Figure 2
Figure 3
M64 www.kennametal.com
Taper
Clockwise
for Locking
Counterclockwise
for Unlocking