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VTS reserves the right to implement changes without prior notice
Ventus Air Handling Units
FANS BEARINGS
Depending on a type, size and shaft power, fans assembled in the AHUs are equipped with various
types of bearings.
Fans without a casing equipped with PEAF..KBT 1 belt drive (table 16 a) are delivered with already
greased ball bearings in cast-iron casings.
Amount of grease used for lubrication as well as the lubrication interval depends on a
bearing type and its rotary speed.
Replacement of bearings assembled in cast-iron single casings in fans type PEAF...KBT 1:
1. Ease protection screws 1 and remove protection rings 2
out of bearings with a centre punch and hammer. Remove
pins 3 from a cast-iron bearing casing and remove screws
4 fastening the casing. Remove the casing with the
bearings out of the shaft. Using appropriate tools, hold the
shaft in an appropriate position in order not to damage the
inlet funnel or rotor's wheel.
2. Replace the bearings and install new ones in the cast-iron
casings.
3. Assemble the casings onto the frame paying attention to
preserving coaxiality of the rotor and inlet cone Tighten up
screw fastening the casing. Install protection rings onto the
bearings clamping them according to the fan's rotations
direction and secure them with fixing screws. Turn the
wheel several times in order to check if it rotates correctly.
Table 16a. Fans bearings without casing, version PEAF..KBT 1
In fans type TAE … / TDF … (table 16 b) balls bearing are installed in the rubber amortizing ring
(TAE fans …) or in the cast-iron casing (TDF fans …).
Replacement of bearings mounted on cross-bars in TAE type fans :
1. Ease the securing screws (1) and remove the securing
rings (2) from bearings with the use of a centre punch
and a hammer. Slide the securing rings from the shaft.
With the use of appropriate tools hold up the shaft in
the correct position in order not to damage the inlet
cone or the rotor wheel.
2. Disconnect the cross-bars (3) from side panels and
slide them off the shaft together with the bearing.
Remove old bearings and rubber rings and fit new
bearings and rubber rings on cross-bars.
3. Fix the cross-bars on the side panels paying attention
to the coaxiality of the rotor and the entrance cone.
Tighten the screws fastening the cross-bars to the
side panels. Fix the securing rings on the bearings by
tightening them in accordance with the direction of fan
rotation and secure them with retaining screws. Next
spin the wheel to verify if it rotates properly.
Unit
Fan's type
Hole
(mm)
INA
SKF
Bearing unit type
Bearing type
Bearing unit type
Bearing type
VS 180
PEAF 630 KBT 1
40
PASE 40
GRAE 40 NPPB
SY 40 FM
YET 208
VS 230
PEAF 710 KBT 1
50
PASE 50
GRAE 50 NPPB
SY 50 FM
YET 210
VS 300
PEAF 800 KBT 1
50
PASE 50
GRAE 50 NPPB
SY 50 FM
YET 210
VS 400
PEAF 900 KBT 1
60
PASE 60
GRAE 60 NPPB
SY 60 FM
YET 212
VS 500
PEAF 1000 KBT 1
60
PASE 60
GRAE 60 NPPB
SY 60 FM
YET 212
VS 650
PEAF 1120 KBT 1
(inlet cone site)
60
PASE 60
GRAE 60 NPPB
SY 60 FM
YET 212
PEAF 1120 KBT 1
(belt drive site)
RSAO 60 FA 106
GNE60-KRR-B
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