Technical Information

Technical Information
Technical Information
KM-LOC Clamping System
KM-LOC Clamping Units
Operating Instructions
All KM-LOC Clamping Units utilize disk springs to develop the correct clamping
force. This clamping system does not require a torque wrench to achieve proper
clamping force. The KM-LOC System provides consistent clamping forces
designed to last 50,000 cycles.
KM-LOC Locking Sequence
Always ensure that the KM cutting unit and clamping unit are free of dirt and
contaminants. When installing the cutting head into the clamping unit, note
the key relations of the male and female tapers. The flange face will have
about 1mm (.040") standoff from the gage face before lock up. If the amount
of standoff is greater than this, the unit is either error proofed or the tapers
are contaminated. Rotate the head 180° for correct, free-state standoff.
Next, insert a wrench with the properly sized metric bit into the cam socket.
Rotating the cam socket clockwise 140° (where it will stop) locks the head
into the clamping unit. The dimples on both the cam and clamping unit body
are aligned when a positive stop is reached.
KM-LOC Unlocking Sequence
Remove chips or foreign material from around the cutting unit flange and
clamping body. Insert the metric bit into the cam and rotate counterclockwise to
unlock the unit. During this procedure, the lockrod will make contact with the
inside of the cutting unit (this could feel like a positive stop), continue the
counterclockwise turn until the head moves apart from the gage face.
When unlocked, a KM head will bump off. The KM System utilizes a 10:1
self-locking taper that requires a mechanical release.
orientation notch
KM-LOC Activation Drive Size
KM
system size
activation cam
error proofing
(continued)
M30 www.kennametal.com
drive
size
KM32 6mm
KM40 8mm
KM50 10mm
KM63 10mm