20
en
Pneumatic pipe milling machine:
The model RDG 18-3 a/b (**) is operated by the ball valve moun-
ted on the compressed-air hose; the ball valve is directly in front of
the pneumatic motor.
Handling.
Risk of injury
The guard must be completely closed and locked during operation!
For pipe milling machines with an electric motor, it is important to
ensure that the direction of rotation of the tool is correct. The
direction of rotation can be reversed using the reversing switch.
■
Swing the running saw blade into the pipe as deeply as possible
using the handwheel. Plunging the saw blade deeply into the pipe
stabilises the cutting procedure.
■
For milling, choose the slightest possible tool depth. The removal
volume increases as the cutting depth increases.
■
Plunge the cutting tool approx. 3 mm deeper than necessary;
then return to the necessary depth; the cutting tool is then out
of contact.
■
Switch off the pipe milling machine.
■
Then fix the setting by tightening both the nuts (11).
■
Switch the pipe milling machine on again.
■
Provided the motor power is sufficient the pipe wall should be
cut in one operation.
■
Pipes that have already been laid can sag during sawing and
wedge the cutting tool in the slit. For this reason, the wedges
supplied with the machine must be knocked into the slit at regu-
lar intervals behind the sawing tool. In areas where there is risk
of explosion, use wedges (6 33 05 013 00 2)
(RSG Ex 18 a/b (**) standard accessories) and a hammer made
of a non-sparking material.
■
Avoid overloading the pipe milling machine.
■
The machine is overloaded if the motor speed noticeably drops
when inserting the running cutting tool. This also results in a
decrease in the chip-removal volume.
For pipes with a thick wall (s > 10 mm) the welded joint must be
milled in several operations.
Congruence in the cutting procedure is influenced by the following
factors:
- Alignment of the pipe milling machine at the beginning,
- Geometric deviation of the pipe from the circular or cylindrical
form,
- Sharpness of the cutting tools,
- Hardness of the material.
The pipe milling machine is adjusted in such a way that for pipe dia-
meters of 300 mm and 600 mm the beginning and end of the cut-
ting line are approximately in line.
Due to the eccentricity of the guide shaft, the adjustment mark
(24, see Fig. D) is only binding for the two given diameters. For lar-
ger pipe diameters it may be necessary to make a readjustment.
Reverse run of the pipe milling machines (RSG (**)/
RSG Ex (**)).
Avoid damage!
Before the pipe milling machine is reversed, ensure that the cutting tool
is retracted, in order to avoid damaging the tool and the gears.
■
Turn the main switch/reversing switch to position “0” (OFF).
■
Retract the cutting tool.
■
Switch the reversing switch to reverse run.
The pipe milling machine is not suitable for cutting in reverse run!
Reverse run is not possible with the pneumatic pipe milling machine!
Instructions for cooling.
Avoid damage!
We recommend using the FEIN compressed-air cooling lubricator.
The chips can wedge if the cooling and lubrication are insufficient. This
can cause the tool to break.
■
Always dry-cut cast iron pipes without using any cooling lubri-
cant.
■
Cool the saw blade or cutter with soapy water whilst cutting
plain steel pipes.
Setting the running accuracy.
■
Unscrew the nut (15, see Fig A) SW 46.
■
Turn the axle (10) respective to the fish plate (19).
■
Tighten the nut (15).
By turning the axle (10) clockwise (towards the cutting tool), the
cutting tool moves rightwards (the viewing direction is the same as
the running direction of the pipe milling machine).
When turning the axle anticlockwise, the cutting tool moves leftwards.
Clamping on the pipe milling machine.
“A”
required working space for the deepest cutting depth.
“D”
External diameter of the pipe
“i”
Number of chain links for pipe diameter “D”.
!
Position
of the running
axle
D
A
Required chain
length for each
side
Total chain
length
i*
[mm]
[mm]
[mm]
[mm]
I
250
300
350
400
452
452
450
448
1.427.0
1.525.0
1.632.0
1.744.0
2.854.0
3.050.0
3.264.0
3.488.0
5
5
6
6
10
19
24
D
i
A
D
E
3 41 00 958 06 8.book Seite 20 Dienstag, 23. Februar 2016 2:10 14
