Operators manual for the Pentruder 6-12HF and Pentpak HF-power pack – Original instructions
Page
18
Quick disconnect coupling for the saw blade
Function principle:
The saw blade is fitted on a blade flange by means of an outer collar and clamped by means of a
special centre screw, or, for flush cutting, on a special flush cutting flange by means of 6
countersunk screws and nuts.
The blade flange, regardless of type, is provided with a radial T-slot to the centre of the flange. The
flange, with blade fitted, is mounted on the machine spindle and its pull stud which fits in to the T-
slot in the flange. When the coupling is tightened with the locking screw at the rear of the spindle,
the flange is clamped towards the machine spindle by the pull stud which then moves inwards.
The flange and the spindle are provided with drive dogs to transmit the torque to the blade. The
dogs must always be aligned, in mesh, for the coupling to work properly.
At the same time as the pull stud moves inwards, a conical centering ring moves outwards to centre
the flange on the spindle. This ring at the same time interlocks the coupling by blocking the T-slot.
This principle is very safe, as it does not require more than one single operation to be carried out to
clamp and interlock the coupling. Even if the coupling is not completely tightened the saw blade can
not fall off the spindle as the conical ring keep the blade on the spindle. It is however very important
that the dogs are completely in mesh before the coupling is tightened.
Warning! Never fit the blade and flange to the saw spindle before first disconnecting two
orange colored power cords from the saw. This important rule must always be strictly
followed to ensure that the blade motor or movements of the machine cannot be
unintenionally started. Failure to follow this instruction may result in serious personal injury
or death.
The power pack can be placed out of sight of the operator, or on a different level, and the
only way to protect the operator from accidental starting of the blade motor is for the
operator to always disconnect the two orange colour power cords. With the orange colour
cords disconnected no power can go to the saw head.
Make sure the dogs
are properly in mesh
before starting the
machine!
The screw
end should
be flush with
the bronze
water seal
bushing when
the coupling
is tightened
40 Nm
