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Idiomas disponibles
LMP51 H
Reaction bar
Adapt and use the torque reaction bar (see figure in
Service instructions) as follows:
1 Shaping the reaction bar, Fig. A
The torque reaction bar must be shaped to fit a
suitable fixed support. To avoid overloading of
the bearings for the tool drive and of the reac-
tion bar, the point of contact on the reaction
bar should be within the shaded area (F), see
Fig. A.
• Measure the distance (L) for the hexagon
sleeve to be used. Mark out points (A and B)
on a sheet of paper.
• Consult Table No.1 to find the angle (α) appli-
cable to the diameter (D) of the machine and
the tightening torque in question. Draw a line
from point (A) in angle (α) from the centre line
(A – C).
• Draw a line (B – E) at right angles (90
centre line (A – C) of the machine from point
(B). Starting at point (B), draw two lines at an-
o
gles of +15
and -15
o
marked 90
-line.
• Mark the area (F) between the drawn lines.
• Adapt the shape of the reaction bar so that the
point of contact (K) falls within the marked
area (F). The minimum breaking force is ob-
tained if the point of contact (K) is on or
close to line (B – E).
• If the point of contact falls within angle (α) – in
area (G) – there is a risk of overloading of the
bearings for the machine drive and deformation
of the reaction bar.
• If the point of contact is outside angles ± 15
in areas (H) – there is a risk of rapid wear of
the hexagon sleeve and reduced torque accu-
racy.
o
to the
o
respectively from the
© Atlas Copco Industrial Technique AB - 9836 1401 04
2 Bending, Fig. B
• Heat the spot to red colour.
It is recommended to concentrate the heat to
the inside radius in order not to reduce the
original width (W), see fig. B.
• After bending, allow to cool slightly in room
temperature and then chill.
• In order for the torque reaction bar to be as
light as possible it is recommended that the
section outside the bend be configured as
shown in Fig. B.
After bending, attach the accompanying warn-
ing sign to the reaction bar, see fig. C, and
mark the side of the reaction bar that should be
placed against the support i a suitable way.
3 Assembly
• Place the reaction bar in the wanted position on
the machine.
• Tighten the nut to a torque of 70 Nm, 90 Nm or
100 Nm respectively.
• Check regularly that the lock ring is firmly se-
cured.
4 Use
• Apply the reaction bar according to figure C –
opposite the direction of the drive of the ma-
chine – before starting the machine.
• Never put your hand on or close to the reac-
tion bar while the machine is being used.
Table No. 1
LMP51 H006–19, LMP51 H008–13, LMP51
H012–13, LMP51 PH003–19, LMP51 PH004–13
and LMP51 PH005–13
D = 54 mm, Wmin = 28.5 mm
75
Torque
Nm
Angle α 21°
LMP51 H002–20, LMP51 H004–20, LMP51
PH001–20 and LMP51 PH002–20
o
–
D = 62 mm, Wmin = 39.5 mm
Torque
250
Nm
Angle α 30°
Safety Information
100
150
200
27°
37°
46°
300
400
35°
44°
250
55°
500
50°
5
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