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WARNINGS
– Before using the drill, carefully read the instructions contained in
this manual.
SAVE THESE INSTRUCTIONS: this manual contains important safety
and operating instructions for the drill.
– STOP THE ENGINE when servicing the drill: before removing the
broach cutters, spiral bits, positioning templates etc.
– During operation keep hands away from the danger zone.
– Always wear protective glasses and work gloves.
– Avoid wearing clothes which may present a risk to personal safety.
LD-41PN
basic drill
LD-41P
(LD–41PN + DBG-F2)
basic drill complete with
railweb clamping device
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14. WARNINGS
14.1) Regularly check for correct tightening (torque) of the fi xing screws of the drilling tools
and positioning templates.
14.2) Avoid pressure jolts on the advancing lever during drilling.
14.3) Always make sure that the drilling swarf is properly removed before starting to drill
a new hole.
14.4) Incomplete clamping of the drill on the rail to be drilled may lead to the breakage or
accelerated wear of the drilling tool and damage to the spindle shaft bearings.
14.5) If it is necessary to operate the drill without the cutter inserted, remove the locking
grub screws from the spindle shaft.
14.6) Avoid leaving the SR5000 tank under pressure and exposed to sunlight for long
periods of time.
14.7) Should the DBG-F2 clamping device be removed, make sure that by reassembling
it, the two locking screws are fi rmly fastened.
15. RETURN TO Cembre FOR OVERHAUL
In the case of a breakdown, contact our Area Agent who will advise you on the problem
and give you the necessary instructions on how to dispatch the drill to our nearest service
Centre; if possible, attach a copy of the Test Certifi cate supplied by Cembre together
with the drill or, if no other references are available, indicate the approximate purchase
date and the drill serial number.
APPENDIX "A"
Factors which infl uence the number of holes that can be made according to the tool used:
– Hardness of the material to be drilled.
– Thickness to be drilled.
– Stability of the drill clamping and correct assembly of the drilling tool.
– Suitable lubrocooling (lubrication/cooling) to keep the temperature of the tool low so
as not to compromise the effi ciency of the cutting edges, whilst at the same time facili-
tating the removal of the swarf.
– Contact time of the cutting edges of the tool with the material to be drilled; bear
in mind that the faster the hole is made, the greater the effi ciency.
– Observance of these basic rules:
1) Commence drilling by exerting light pressure on the advancing lever, progres-
sively increasing and then relaxing it when the tool is in the exit phase.
2) Avoid pressure surges and advance according to the diameter of the drilling diameter,
to avoid scratching the material or damaging the cutting edges of the tool.
3) Remember that a tool with effi cient cutting edges requires a lower application pres-
sure than one that has already made a certain number of holes.
4) When holes are made close to raised lettering on the rails, commence drilling
with very light pressure until the lettering disappears, to avoid possible breakage
of the tool.
5) Bear in mind that when operating on very hard rails, as in the case of quality 1100
steel, it is advisable to increase the lubrocoolant fl ow rate.
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