Rexnord HANSEN P4 Manuel D'entretien page 7

ansen
T R A N S M I S S I O N S
5.5.2. Hollow shaft gear unit with keyway
connection
Mounting
(fig. 2a)
- Coat mating faces (b) of the machine shaft with sealing compound.
- Slide the O-ring (c) onto the machine shaft.
- Place supplied mounting key (d) into keyway of machine shaft, with the boss
against the shaft face.
- Place the gear unit into position on the machine shaft. Make sure that the
keyways are correctly positioned.
- Press the gear unit on the shaft, using a threaded rod (e), a nut (f), and a
distance ring (g) until the mounting key (d) and the distance ring (g) make
contact.
- Remove the nut (f), the distance ring (g) and the mounting key (d).
- Ensure that key (m) has sufficient clearance on top.
- Fit the key (m) into the shaft (≠ mounting key).
- Remount the distance ring (g) and the nut (f).
- Draw the gear unit further onto the shaft until the faces (h) and (i) make
contact.
- Remove the nut (f), the distance ring (g) and the threaded rod (e).
Securing
(fig. 2b)
- Mount the distance ring (g) again on the machine shaft using correct
fixation bolts (J).
- Install the protection cover (k).
In case of external axial loads on the shaft, please refer to specific instruc-
n
tions on the outline drawing.
Dismounting
(fig. 2c)
- Remove the protection cover (k) and the fixation bolts (J).
- Mount the distance ring (g) on the hollow shaft by means of bolts (ZY)
(dimensions of ZY: see dimensional drawing).
- Place the disassembly bolt (l) into the central hole in the distance ring (g).
- Remove the gear unit from the shaft by tightening the disassembly bolt (l).
Note
The parts e,f,l and ZY are not included as standard, but can be supplied
upon special request.
For technical data, refer to catalogue or certified drawing.
FIG. 2
c
•
•
h
i
MOUNTING
•
•
SECURING
•
•
DISMOUNTING
®
d
b
m
m
5.5.3. Mounting of the torque arm
After fitting and securing the gear unit to the driven shaft (see par.5.5.1 and
5.5.2), fix unit by means of the optionally supplied torque arm to a fixed
torque reaction point. Refer to the certified drawing or catalogue for torque
arm location on gear unit.
The connection between torque arm and reaction point must remain flexible
and resilient. This is achieved by preloading the disc springs of the torque arm.
The preload of the disc springs (A) will be adjusted as follows:
- Determine the spacing S (fig. 3a), this is the spacing of the disk springs in
unloaded and unmounted condition.
- Screw the nuts until spacing S1 (spacing between gear unit and fixed
point) is reached, where S1 = S - ∆S (fig. 3b, 3c, 3d)
- When the prescribed spacing S1 is obtained, lock the nuts by tightening
outer nut against inner nut.
Table 2
Gear unit
size
QH.A2
QH.B2
QH.C2
QH.D2
e
QH.E2
f
QH.F2
g
QH.G2
QH.H2
2a
k
J
g
2b
Table 3
Gear unit
size
ZY
QH.C3
QH.D3 - QH.D4 45
QH.E3 - QH.E4
QH.F3 - QH.F4
l
QH.G3 - QH.G4 60
g
QH.H3 - QH.H4 60
2c
ansen
∆S = spacing obtained after compression of the disk springs
(table 2, 3 and 4) due to the weight of the gear unit and
tightening of the nuts.
A
FIG. 3
D
PT
D PT PR max
±5
mm inch
35 M16 40 1.57
35 M20 50 1.97
45 M24 60 2.36
45 M24 60 2.36
60 M30 75 2.95
60 M30 75 2.95
60 M36 90 3.54
60 M36 90 3.54
D
PT
D PT PR max
±5
mm inch
35 M20 50 1.97 0,7 0.028 2 x 3
M24 60 2.36 0,9 0.035 2 x 2
45 M24 60 2.36 0,9 0.035 2 x 3
60 M30 75 2.95 1,0 0.039 2 x 2
M36 90 3.54 1,0 0.039 2 x 3
M36 90 3.54 1,0 0.039 2 x 3
S
3a
S 1 = S - S
PR
3b
∆S
A
mm inch Q* DIN 2093
0,7 0.028 2 x 2 A 80
0,7 0.028 2 x 2 A 80
0,9 0.035 2 x 2 A 100
0,9 0.035 2 x 3 A 100
1,0 0.039 2 x 3 A 125
1,0 0.039 2 x 3 A 125
1,0 0.039 2 x 4 A 125
1,0 0.039 2 x 4 A 125
Q*: number of disc springs
S 1 = S - S
PR
3c
∆S
A
mm inch Q* DIN 2093
A 80
A 100
A 100
A 125
A 125
A 125
Q*: number of disc springs
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