Operating Manual
Tangential Rolling System T18F - T27F
8
Working range of parallel threads
Rolling
head type
Workpiece major diameter
Max. pitch Max. roll widthMin. Max.
[mm] [Zoll] [mm] [Zoll] [mm]
[Thread/
inch] [mm] [Inch]
T18F 2 5/64 30 1 3/16 2 12 21.5 0.8465
T27F 2 5/64 42 1 5/8 2.5 10 31 1.2205
Working range of tapered threads
Rolling
head type Standard Min. Max.
Allowed shoulder
diam. and working
T18F DIN 158
DIN 2999
DIN 3858
ANSI B 1.20.1
M6 x 1 keg.
R
1
/16 –28
R
1
/8 –28
1
/16 –27 NPT (NPTF)
M30 x 1.5 keg.
R ¾–14
R ¾–14
½–14 NPT (NPTF)
For profiles as per
DIN 158, DIN 2999 &
DIN 3858, the shoul-
der diameter and
working strokes with
parallel threads of
the same dimensions
are identical; for
profiles as per ANSI
B1.20.1 see Internet
T27F DIN 158
DIN 2999
DIN 3858
ANSI B 1.20.1
M6 x 1 keg.
R
1
/16 –28
R
1
/8 –28
1
/16 –27 NPT (NPTF)
M42 x 2 keg.
R 1¼–11
R 1¼–11
1–11.5 NPT
(NPTF)
3.3 Materials
The tangential rolling method can be used for all metallic materials with a breaking
elongation A ≥ 7 %. The tensile strength R
m
should not exceed approx. 1000 N/mm
2
(145.000 Pa). If the material properties are close to the said limiting values, the rollabil-
ity is dependent on the required volume of forming. If the volume of forming is very
small, these values can be exceeded. In general, the materials should have a minimum
breaking elongation of approx. 7 % and not exceed a tensile strength of 1700 N/mm
2
(246.000 Pa). Accordingly, structural and case-hardening steels, stainless steels, heat-
treated steels up to approx. 1600 N/mm
2
(232.000 Pa) are suitable. Soft brass, copper,
light metals, ferritic castings such as GGG 40 or GTS 35 etc.
Brittle materials with a low breaking elongation such as gray cast iron, hard brass
alloys and hardened materials are not suitable.
Warning
Only materials with a breaking elongation > 7 % are suitable for processing.
Brittle materials may cause splinters. Risk of injury!
3.4 Thread length
On each roll side there is a chamfer of the width of the thread pitch P. The largest
theoretical thread length L thus corresponds to the maximum roll width B
2
(see Chap-
ter 12.1) minus 2 x thread pitch P (also make sure to note the requirements specified
in Chapter 3.5!).
LMT_Bedienungsanleitung_T18F_T27F_e.indd 8 02.08.11 17:40
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