20
8.1.5) ONLY FOR LD-4EF DRILL
Set the motor speed, by means of the selector
switch under the automatic switch (see Fig.
17e), in correlation to the diameter of the hole
to be. We suggest to use the standard speed
(280 rpm) for holes smaller than ø 28 mm and
the lower speed (250 rpm) for holes between
dia 28 and 40 mm inclusive.
8.1.6) Proceed to drill by initially applying light pressure on the lever (36), increasing the
pressure progressively, avoiding jolts, and finally relieving the pressure in the exit
phase. When drilling close to raised markings on the rail the initial pressure must be
extremely light until the markings disappear, otherwise the cutter may be damaged.
8.1.7)
The guide bit will enable the lubrocoolant to be discharged throughout the drilling
process.
8.1.8)
When drilling has been completed, fully retract the spindle,
stop the motor by pressing
the automatic switch (position " 0 ")
, and make sure that drilling swarf is removed before
recommencing drilling.
8.1.9)
After drilling it is advisable to remove all swarf from the tool and spindle area.
8.2) Drill fitted with “long” type broach cutter
(for drilling thicknesses
of up to
50 mm
).
Follow the sequence described in § 8.1, taking care to position
the drill on the rail by keeping
the spindle fully withdrawn.
36
35
02
39
ONLY FOR LD-4EF DRILL:
switch for changing of the spindle speed
FIG. 17e
SPEED CHANGE SWITCH
FIG. 18 – DRILLING
