CH160
26
4
3
5
6
2
1
A
3
ø2
/ “
4
ADJUSTING
THE BEARING CLEARANCE
Open the upper chamber. See Section
Opening and removing the upper chamber.
Remove the fastening bolts (M10) (7) and the
upper bearing housings (6).
Remove the grease from the bearing housing.
Lift the disk.
Bend the claw of the securing ring (3) out from
the notch on the axle nut and open the axle
nut.
Remove the spacer ring (3) if the bearing is at
the feeder side.
Measure the radial clearance on top of the
bearing between the rollers and outer ring
with a feeler gauge. The clearance should be
0.02–0.03 mm (0,008-0,012”). Measure the
clearance by pushing the feeler gauge
between the rollers (point A, Fig. 31.) through
the bearing and then moving the gauge back
and forth between the rollers and outer ring
- see Fig. 32. Do not force the feeler gauge
through the clearance.
If the clearance exceeds 0.03mm, bend the
clawof the securing ring (2) out from the notch
on the axle nut (1).
The bearing is tightened by turning the axle
nut clockwise with a 70 mm (2 3/4”) hook
spanner until the right clearance is achieved.
Do not tighten by hammering the axle nut.
Turn the axle nut clockwise until the notch is
aligned with the nearest claw of the securing
ring. Bend the claw into the notch. Do not
bend the claw that was bent earlier.
Lower the disk to the bearing housing.
Install the upper bearing housing and tighten
the bolts (6) to 50 Nm (36 7/8 lbf).
Lubricate the bearing housing. An excessive
amount of grease causes overheating and
impairs lubrication.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
Fig. 30. Bearing, feeder side
Fig. 31. Push the feeler gauge between
the rollers and outer ring.
Fig. 32. Measuring the clearance
Fig. 33. Tightening the bearing
