PRO 10 PB (PBE)
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17
4.3. Large expanding mandrel
Allows
machining
pipes
with
internal
diameters
from
126
to
296
mm
(4.96
–11.65’’)
when used with standard jaw blocks. Additionally, when used with jaw blocks of the
extension set, the large expanding mandrel enables the machine to be installed inside
pipes with diameters from 219 to 376 mm (8.62
–14.80’’) for flange facing.
Install the mandrel after previously removing the existing expanding mandrel.
To do this, loosen the nut and use the 5 mm hex wrench to loosen the set screw (
1
,
Fig. 3) to at least one turn. Then, rotate the spoke handles to the left to disengage the
mandrel from the machine.
Use the following table to select either standard jaw blocks suitable to the inside
diameter of the pipe to be machined or jaws blocks of the extension set for flange
facing.
Then,
use
the
5
mm
hex
wrench
to
tighten
them
to
the large expanding mandrel
as shown in Fig. 2, and install the mandrel into the machine (
2
,
3
,
4
,
5
, Fig. 3).
Pipe internal diameter
with large expanding
mandrel and standard
jaw blocks
Jaw
block
number
Adapter
Pipe internal diameter
with large expanding
mandrel and jaw blocks of
extension set
Jaw
block
number
Adapter
[mm]
[inch]
[mm]
[inch]
126
–142
4.96
–5.59
1
–
219
–235
8.62
–9.25
7
–
142
–158
5.59
–6.22
2
–
235
–251
9.25
–9.88
8
–
157
–173
6.18
–6.81
3
–
251
–267
9.88
–10.51
9
–
173
–189
6.81
–7.44
4
–
267
–283
10.51
–11.14
10
–
188
–204
7.40
–8.03
5
–
283
–299
11.14
–11.77
11
–
203
–219
7.99
–8.62
6
–
296
–312
11.65
–12.28
7
+
219
–235
8.62
–9.25
2
+
312
–328
12.28
–12.91
8
+
234
–250
9.21
–9.84
3
+
328
–344
12.91
–13.54
9
+
250
–266
9.84
–10.47
4
+
344
–360
13.54
–14.17
10
+
265
–281 10.43–11.06
5
+
360
–376
14.17
–14.80
11
+
280
–296 11.02–11.65
6
+
Part number:
TRZ-0200-50-00-00-0
