Boring Tools: KA/KAB & CKN - MODULAR TOOL SYSTEMs
The KAISER KA connection consists of a cylindrical
male pilot and female receptacle. The connection is
made by means of a radial locking screw with a 15
degree taper. The screw engages in the respective offset
pocket of the male pilot with a cam action.
The locking screw force creates a 3.3 to 3.5 times larger
axial force which rigidly clamps the faces of the two
components together. This face to face clamping builds up a
friction force between the two components. Additionally the
thrust of the screw locks and pushes the male pilot
securely into line contact against the opposite wall of the
The torsional cutting forces are primarily transmitted by the
friction between the faces. Any remaining torque results
in additional wedge action between the locking screw and
the male member, which is transformed into a very strong
additional axial clamping force.
The KAISER KAB connection is derived from the KA
connection without loss of all technical and dimensional
features or interchangeability and ease of maintenance.
The KAB connection is equipped with a floating drive pin
which engages on both sides into respective pockets in the
mating part. The tapers on the pins and the angles on the
pockets are engineered to permit an automatic balancing of
the two resulting torsional forces.
The drive pin is retained with a simple spring ring.
Adaption to the KA connection is made by pushing the drive
pin out of the male pilot.
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There are many advantages to this simple but effective
- Maximum rigidity, face to face clamping forces over the full cross section of modular connections
- Stacking of up to five components without detrimental effects.
- Repeatable seating precision of the modular components
of .0001" radial
- 90 degree offset location of the locking screws to cutting edge
guarantee spindle orientation irrespective of the number
of components assembled.
- Moderate vibration dampening effect due to the friction
created between the mating components.
- The components do not jam up and the simple design
makes it easy to keep clean.
- Assemble and disassemble
without the need for special wrenches, fixtures and vises.
CKN - MODULAR TOOL SYSTEM
The new CKN connection is almost 100% compatible with KAB and is based on a 3 screw connection with double connector steel couplings and aluminium tubes as extensions, allowing the highest torque transmission. By tightening the 3 screws, the slotted male connection expands and gives additional rigidity to the tool connection.
Double connector couplings and aluminium extensions for the transmission of high torque.
Weight reductions up to 50% with equal cutting performance compared to tool combinations made of steel.
Reduced weight allows easier handling and eliminates manual tool change in many cases.
Maximum rigidity of the tool connection due to high clamping force and expansion of the slotted tool connector.
Vibration damping due to the use of different materials.
Varied lengths of steel couplings & aluminum extensions allow optimized tool length.
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