Pulsafeeder Pulsalube 8 GS Ultra, Руководство по эксплуатации и техническому обслуживанию

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3. Installation
WARNING
Disconnect all power sources from the equipment
before beginning this installation procedure. Handle the
components with care and avoid all sharp or machined
edges to prevent personal injury.
STOP
HARMFUL SITUATION
STOP
Do not tighten any of the shrink disc locking screws prior
to installing the reducer with shrink disc onto the machine
shaft. The inner ring of the shrink disc can become perma-
nently contracted or damaged at a relatively low tighten-
ing torque.
Table 1 - Required Machined Shaft Tolerance
Inch Machine Shaft Metric Machine Shaft
From To ISO 286-2
Tolerance
h11(-)
Over Including ISO 286-2
Tolerance
h11(-)
ø [in] ø [in] [in] ø [mm] ø [mm] [mm]
0.4375 0.6875 - 0.004 10 18 - 0.11
0.7500 1.0625 - 0.005 18 30 - 0.13
1.1250 1.9375 - 0.006 30 50 - 0.16
2.0000 3.1250 - 0.007 50 80 - 0.19
3.1875 4.6875 -0.008 80 120 -0.22
4.7500 4.7500 -0.009 120 125 -0.25
A. Carefully inspect the machine shaft [6] and remove all
burrs, rust, corrosion, lubricants, and foreign matter
from the shaft surface. Verify that the diameter is within
the dimensional tolerances shown in Table 1.
B. Inspect the gear unit received to confirm the correct
position of the shrink disc [1]. Make sure the hollow
shaft [5] projection is on the side of the reducer where
it was specified or ordered.
C. In addition to cleaning the machine shaft [6], remove all
dirt, grease or oils from the reducer hollow shaft [5],
bushings [3], clamp ring [4], and shrink disk [1]. Do not
apply lubricants, corrosion preventatives, anti-sieze
compounds or coatings to the mating surfaces of the
shaft, bushings, clamp collars or shrink disc.
D. Position the clamp ring [4] and support bushing [3*]
over the machine shaft [6], making sure the support
bushing is in its desired location. Then secure the sup-
port bushing [3*] with the clamp ring [4] and tighten
the clamp ring screw.
E. Slide the gear reducer onto the machine shaft [6] until
the gear reducer stops against the secured support
bushing [3*].
F. Without taking the shrink disc [1] apart, loosen the
shrink disc locking screws [2]. Slide the shrink disk over
the reducer shaft [5] and slide the torque bushing [3]
onto the machine shaft, making sure it is seated
completely.
G. Confirm the positioning of the shrink disc [1] and
torque bushing [3]. Do not tighten the shrink disc until
the machine shaft and torque bushing are in proper
position, or the reducer shaft will be damaged. Hand-
tighten 3 or 4 or locking screws [2] and make sure the
outer collars of the shrink disc are drawn together in
a parallel fashion and then hand-tighten the remaining
screws.
H. Refer to Table 2 for the specified tightening torques for
the shrink disc locking screws. Using a properly set torque
wrench using approximately ¼ (90°) turns; tighten the
locking screws, by working in a circular clockwise or
counterclockwise sequence around the shrink disc.
I. Continue the tightening sequence (Step H.) even if some
locking screws initially require very low tightening torque
to achieve ¼ turns; do this for several passes until ¼ turns
can no longer be achieved.
J. Reset the torque wrench to approximately 3-5% over-
torque and tighten the locking screws for 1 or 2 more
passes. This procedure will compensate for relaxation of
the locking screws, since tightening of a given screw will
always tend to relax the adjacent screw. Without a slight
overtorquing of the screws, an infinite number of passes
would be required to reach the desired tightening torque.
Table 2 - Shrink Disc Locking Screw Torque
Screw Size Wrench Size Tightening Torque
[mm] [Nm] [lb-in] [ft-lb]
M5 8 7 62 5.2
M6 10 12 106 8.9
M8 13 30 266 22
M10 17 59 522 44
M12 19 100 885 74
M16 24 250 2213 184
M20 30 490 4337 361
BOLT TIGHTENING PATTERN
K. Reset the torque wrench to the correct tightening torque
as indicated in Table 2. Make sure each locking screw has
been properly tightened until the screws are no longer
turning at the specified torque wrench setting. If necessary
repeat Steps G. & H.
DRIVESYSTEMS
NORD GRIPMAXX
™
RETAIN FOR FUTURE USE
U10310 - 2 of 3
www.nord.com/docs 03.04.14
NORD Gear Corporation
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