Mounting Instructions
EN
MA-CFB_BEARING
4.4 – 02/2020
4
Self-aligning bearing
with cast housing and tubular strut support
RZR 15-0400/-1000 (IWN)
RZR 19-0400/-1000 (IWN)
TZR B5-0400/-1000 (IWN)
(Page 2 of 2)
Mounting the bearing
The
bearings are accordingly mounted
in the reverse order, it must be ensured that the components are absolutely clean.
- Centre the covering of the inlet ring and running wheel
- For re-greasing the bearings see following section
1.
The bearings are mounted so that a floating layout is created.
2.
The B-bearing abuts the inner collar of the housing at (8) with the shoulder of the outer ring.
3.
To the A-bearing is a spring washer (9) attached that can execute a spring range of ~3mm.
4.
The A-bearing should line up precisely with the bearing housing (10). When tightening, the bearing moves about 0,4mm
towards inside (11). With the housing cover, the bearing is pushed further by around 1,5mm inwards into the bearing
housing.
5.
The bearing clearance must be set at the same time that the
bearing is fastened to the shaft
. To ensure that the bearing
lifespan is long,
special care
must be taken here!
In order to avoid premature damage, please note the following:
Do not subject the bearing mounting to knocks and blows!
The tightening methods of the different manufacturers must not be interchanged!
Tighten the sleeve nut as per the following two steps:
-
Step 1:
The sleeve nut must be evenly tightened until the shaft, the sleeve and the inner ring of the bearing are as close
together as possible (interlocking) (look for the so-called "fixed point").
For FAG bearings this point is reached when the sleeve nut is tightened with a defined torque. To do this, you will however
need the special tool supplied by FAG. When using the “standard tool” other tightening torques than those for the original
FAG tool apply! (Note the differences in Table 1!)
-
Step 2:
Depending on the fan or the bearing size, the sleeve nut is tightened as stated in Table 1. As this process results in
the necessary bearing clearance, this process must be undertaken with care.
The procedures and tightening values must be observed as given by the bearing manufacturer. It is not permitted to
exchange one process for the other!
Only the approved tools must be used to tighten the locknut, e.g. hook spanner, hydraulic nut, etc. It is not permitted to
tighten the locknut with a mandrel or hammer and chisel!
6.
Secure the sleeve nut (bend back a tab of the safety plate)
Caution!
Never turn sleeve nuts back to secure them! Always continue to turn them in the tightening direction until a tab of
one the nuts can be bent backwards.
Lubrication
Lubrication
must always be undertaken with the recommended quality lubricant (see the RZR Operating Instructions).
- Fill the hollows of the self-aligning bearings completely with lubricant.
- Fill the bearing housing half (50%) with lubricant.
Table
1
Fan
RZR ..-
Bearing Type
Bearing
clearance C3 -
Before
mounting [µm]
SKF-
bearing
SNR-
and
Rollway-
bearing
FAG
bearings
Step 1:
Tightening torque
Step 2:
Angle
min.
max.
Tightening
angle
Tightening
angle
FAG
tool
Torque
tool
+ Tightening
angle
0400 / 0450 / 0500
2307 K/C3 + H 2307
Self-
alignin
g
bearing
29
46
70°
80°
35 Nm
38 Nm
+ 66°
0560 / 0630
2309 K/C3 + H 2309
33
52
70°
80°
58 Nm
61 Nm
+ 72°
0710 / 0800
2311 K/C3 + H 2311
41
61
75°
100°
93 Nm
100 Nm
+ 66°
0900 / 1000
2313 K/C3 + H 2313
50
75
80°
100°
97Nm
107 Nm
+ 80°
TZR B5-
0400 / 0450 / 0500
2307 K/C3 + H 2307
Self-
alignin
g
bearing
29
46
70°
80°
35 Nm
38 Nm
+ 66°
0560 / 0630
2309 K/C3 + H 2309
33
52
70°
80°
58 Nm
61 Nm
+ 72°
0710 / 0800
2311 K/C3 + H 2311
41
61
75°
100°
93 Nm
100 Nm
+ 66°
0900 / 1000
2313 K/C3 + H 2313
50
75
80°
100°
97Nm
107 Nm
+ 80°
When mounting new bearing components, observe the enclosed instruction manual and, where applicable, the
instructions and values provided by the respective manufacturer!
