Mounting Instructions
EN
MA-CFB_BEARING
4.4 – 02/2020
2
Deep groove ball bearing
a) with profile strut support
b) with tubular strut support
a) b)
RZR 11-0200/-1000 RZR 11-0200/-0710 IWN
RZR 12-0200/-0710 RZR 12-0200/-0710 IWN
TZR B1-0160/-0710 RZR 19-0200/-0355 (IWN)
TZR B2-0160/-0710
VZR 71-0200/-0560
Notes
The greased deep groove ball bearings sealed on both sides are designed for a nominal service life (L
10h
according to DIN ISO
281-1) of 20,000 respectively 40,000 operating hours. Maintenance must be carried out according to the chapter on
upkeep/maintenance in the RZR / RER operating instructions.
If it is required to change the bearings, the safety
instructions stipulated in the RZR / RER operating instructions must be followed without fail!
General information
To expose the fan bearings, various dismounting work (e.g. disconnection from the mains, belt drive, protective and
monitoring devices, ducts), must be performed in compliance with the safety and accident protection regulations and the local
and structural conditions.
Dismounting the bearing
1.
Unscrew the locking screw (1), unscrew the eccentric clamping ring (2) against the direction of rotation of the running wheel
and remove it.
2.
Prop and secure running wheel or shaft
3.
a)
Dismount profile strut support (3), Remove rubber insulating ring and pull the bearing off the inner ring with a suitable
tool (Warming the bearings up to 200°C facilitates dismounting substantially, is however not necessarily required).
3.
b)
Loosen the bearing pipe fastening on the housing and pull off the complete bearing support and bearing with a
suitable tool. (Warming the bearings up to 200°C facilitates dismounting substantially, is however not necessarily
required).
Mounting the bearing
1.
Clean the seat of the roller bearing on the shaft and the inner ring of the bearing thoroughly and remove the grease from
them with fat dissolving agents (petroleum benzine, etc.).
2.
Push pre-assembled supporting unit (star-shaped support and bearing) on the shaft and fasten it to the housing. Apply
drops of adhesive to the seat of the bearing.
3.
Adjust the air gap between the fan wheel and the inlet nozzle.
4.
After adjustment apply drops of adhesive between the inner ring of the bearing and the shaft as shown in the drawing.
5.
Push the eccentric clamping ring (2) on the shaft and tighten it with the bearing in the direction of rotation of the running
wheel with a light jarring blow, tighten the locking screw (1). The hardening time of the adhesive depends on the
temperature, it takes approx. 24 h at +20°C.
metal
adhesive
1
2
3
only for
IWN...
a)
b)
2
1