Rotary hammer
Rated power
No load speed
No load hammer rate
Drilling diameter in concrete
Drilling diameter in steel
Drilling diameter in wood
Weight according EPTA-Procedure 01/2003
Follow very carefully the instructions in this manual, save it
and keep close at hand, ready to carry out any inspection of
parts that may be necessary.
If the machine is used carefully and normal maintenance is
carried out, it will work well for a long time.
The functions and use of the tool you have bought shall be
only those described in this manual. Any other use of the tool
is strictly forbidden.
ILLUSTRATIONS
DESCRIPTION (See figures)
A SDS-plus chuck (Fig.1)
B Chuck sliding ring (Fig.1)
C Speed regulating handwheel (Fig.1)
D Push button for mode change (Fig.1)
E Mode changeover(Fig.1)
F Label for reversing rotation R-L (Fig.1)
G Changeover left/right direction switch (Fig.1)
H On-/off switch (Fig.1)
I
Locking button (Fig.1)
K
Depth stop fixing wing nut (Fig.1)
L
Depth gauge (Fig.1)
M Auxiliary handle (Fig.1)
N Screwdriver bit (accessory*) (Fig.)
O Key chuck (accessory*) (Fig.)
P SDS-plus adapter (accessory*) (Fig.)
* Not included in standard equipment, available as an
accessory
BRIEF DESCRIPTION
A percussion unit generates the power necessary for hammer
drilling or chiselling in masonry.
Just like when we hit a conventional chisel with hammer, a free
piston strikes the bit or chisel, which can move lengthways,
through an intermediate part. This free piston is driven by
a second piston activated by an electric motor through an
air cushion. This electro-pneumatic principle offers great
percussion elasticity and work free from recoil.
Unlike a normal hammer drill, the drilling capacity does not
depend on the pressure exerted on the machine.
Use of the tool: The rotary hammer can be used for hammer
drilling and drilling in wood, metal as well as plastic, and also
for driving screws with driving bits installed in a key chuck
with the SDS-plus adapter. Any other use not mentioned is
TECHNICAL DATA
RHF 18/450ERT
W
450
/min
0-1650
min
0-7500
mm
18
mm
1
mm
kg
,1
not allowed.
Additional features of the rotary hammer:
- The machine is equipped with a safety clutch or mechanism
which operates when a bit seizes up, pro-tecting the user
and the machine's electro-mechanical parts. The clutch is
released automatically.
Warning! This machine must not be used with hole saws, core
bits, diamond bits, etc, as they tend to jam in the hole easily.
This would cause the safety clutch to trip out too often.
- Percussion drill chuck A with SDS–plus mounting for using
tools with SDS-plus shaft. A geared drill chuck or a keyless
chuck can be used in conjunction with the SDS-Plus Adapter
P.
- Change direction of rotation with switch lever G –due to a
lockout mechanism, switching the lever is only possi-ble if the
On/off switch H is not depressed.
- Electronic control of spindle speed, infinitely variable by
finger pressure on the On/off switch H.
- For maximum speed regulation use handwheel C.
- For continuous operation the On-/Off switch can be locked
in the "On" position by the button I.
- Auxiliary handle M, adjustable, with integral depth gauge L.
WARNING! Before carrying out any work, check, for instance,
using a metal detector, that there are no electric wires or gas
or water pipes under the surfaces you wish to work on.
Make sure the mains voltage is correct: it must be the same
as that on the specification label. Machines with 230V can
also be connected to a 220-V mains supply.
To turn the machine on, press the ON/OFF switch H and keep
it pressed down.
When the ON/OFF switch is released, the machine stops.
WARNING! Always disconnect the plug from the socket
before doing any work on the machine.
1. Fitting the working tools
Hammer drill (Fig.1)
Only use tools with SDS-plus shaft!
1. Clean and grease the shaft of the tool.
. Before inserting the tool, move the sliding ring B back.
Now the SDS-plus chuck is open.
. Push the tool in, turn it slightly until it can be pushed in
all the way and you can feel it notch into place.
. Release the sliding ring B. Now the tool is locked.
5. Check that the tool is properly locked into place. It must
be possible to move it about 10 mm lengthways.
6. Switch machine over to hammer drilling with lever E in
appropriate position.
SDS-plus adapter for geared drill chuck (Fig.)
RHF 22/620ERT
620
0-1100
0-5060
1
30
,5
BEFORE USING THIS TOOL