Mounting Instructions EN
MA-CFB_BEARING 4.4 – 02/2020 8
Deep groove ball bearing
with sheet metal flange sheet metal strut fastening
RER 11-0200/-0710
RER 12-0200/-0710
RER 15-0400/-0710
(Page 1 of 1)
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. 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.
0200/-0355
0400/-1000
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.
Bearing on intake side (0200/-1000)
2. Dismount profile strut support (3).
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).
Bearing on drive end (0200/-355)
4. Dismount the flange housing (4), remove the rubber insulating ring and pull off the bearing
Bearing on drive end (0400/-1000)
5. Loosen the nuts of the screws (5). Screw 2 screws M10×30 into the empty drill holes M10 in the housing, push back the
housing so that a three-armed extractor can be set on it. Set the extractor on the
cast housing (6) and pull off the cast housing with the bearing.
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 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.
After adjustment apply drops of adhesive between the inner ring of the bearing and the shaft as shown in the drawing.
4. 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.
Nicotra Gebhardt GmbH
Gebhardtstrasse 19-25
74638 Waldenburg, Germany
Telefon +49 (0)7942 1010
Telefax +49 (0)7942 101170
E-Mail info@nicotra-gebhardt.com
www.nicotra-
ebhardt.com
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