CO/Tech ZJ4116-J11 User Manual

ENGLISH
8
16
Tips for use
Depth stop
The machine is equipped with a depth stop
whichisadjustedusingthelever(15).The
drilling depth can be measured using the
scale on the depth stop (2).
Chuck
Drills and cylindrical shafted tools up to
16 mm in diameter can be fastened in the
chuck with the chuck key (16).
Fastening the workpiece
The table has slots for fastening T-bolts and
drill vices to it.
Adjusting the table
The table can be moved up and down the
pillar when the locking lever on the back of
the table support (18) isundone.Adjustthe
table so that there is enough room between
the drill and the table for the workpiece. The
table can also be moved to the side if you
wishtoxaworkpiecedirectlytothebase
of the drill.
Ifyouwishtodrillatanangle,thetablecan
be tilted and the workpiece clamped to the
table. Undo the bolt (19) on the hinge of
the table (20). Move the table (17) to the
desired position and then tighten the bolt
(19) again.
Rpm/min and rate of feed
The drill is fed using the three feed levers (5). The spindle speed is determined by the size of
drill bit and the type of material being drilled.
The rate of feed is a crucial factor for the life of the drill bit and quality of result.
Follow these basic rules:
- Thebiggerthediameterdrillbit,thelowerthespeed.
- If the material being drilled is hard there is a natural urge to apply more pressure to
thedrill,buttoavoidoverheatingthedrillbitonsuchoccasionsoneshouldapplyless
pressureandlowerthespeedofthespindle.Moreover,thedrillbitneedstobecooledwith
a suitable cooling solution depending on the type of material.
When drilling into thin material be careful not to apply too much pressure and feed too quickly.
Whendrillingdeepholes(twicethediameterofthedrillbit)itcanbedifculttogetridofthe
swarf,whichcanleadtothedrillbitbecominghot.Itisthereforeagoodideatoreducethe
feed rate and remove the swarf by lifting the drill out of the hole from time to time. When drill-
ingholeslargerthan8mmyoushouldrstdrillapilotholesothetipofthedrillbitisnotover-
loaded. In this way you stop the tip of the drill from being overloaded.

CO/Tech ZJ4116-J11 Specifications

General

Brand	CO/Tech
Model	ZJ4116-J11
Category	Drill
Language	English