7 Operation
Operating instructions REB 6, REB 14, REB 20
24
(06.10)
MT_REB 6_REB 14_REB 20_BA_04_790093762_02.doc
orbitalum tools
gmbh
7.6
Adjusting the rotational speed
1. Connect the REB (requirements for REB (D) see chapter 5.2, p. 13, for
REB (E) see chapter 5.3, p. 13).
Tool damage
A pipe which is not sawn-off square can damage the tool if the distance
between the cutting edge and the pipe end is too short.
Before switching on the REB, check that there is a sufficient distance
between the cutting edge and the pipe end.
2. Take the recommended cutting speed from the table below.
3. Determine the actual revolutions per minute (rpm) (formula, see chapter
7.6.2, p. 25).
4. Compare it with the recommended cutting speed and reduce or increase
the revolutions per minute (rpm) accordingly.
7.6.1
Standard values for rpm (n) and cutting speed (v)
Pipe OD
Nominal
bore DN
Unalloyed and
low-alloy steel
High-alloy steel
[mm]
[inch]
[inch]
[v (m/min)]
[n (rpm)] [v (m/min)] [n (rpm)]
42.2 1.66 1
1/4
7
53
6
45
48.3 1.9 1
1/2
7
46
6
40
60.3 2.375
2
7
37
6
32
73 2.875 2
1/2
7
31
6
26
88.9 3.5
3
7
25
5
18
101.6 4
3
1/2
7
22
5 16
114.3 4.5
4
6
17
5
14
141.3 5.563
5
6
14
5
11
168.3 6.625
6
6
11
4
8
219.1 8.625
8
6
9
4
6
273 10.75
10
6
7
4
5
323.8 12.75
12
6
6
4
4
355.6 14 14
6
5
4
4
ATTENTION
Summary of Contents for REB 14
Page 39: ......
