2205Q2JE-HO-S6-N_2020.01.
Chapter 5 Maintenance and Inspection
SCV-series Screw Compressor 5.5 Reassembly
5-35
5.5.1 Bearing Head and Main Bearings
The main bearing (O-ring type) [27] is installed by a light press fit.
a) Align the notch on the main bearing [11] with
the spring pin [14] that is driven in into the
bearing head [11], and then drive it in with a
pad. For the alignment, it is convenient to use
a tool such as a guide bar (see the picture in
Section 5.5.4).
b) After the bearing has been inserted, install
the snap ring [29] to retain the bearing in
position. Securely install the snap ring to be
fully seated in the ring groove, by pushing the
snap ring with a guide bar or the like, or by
lightly hitting the guide bar with a hammer
while placing the guide bar on the snap ring.
c)
Install the O-ring [451] to the O-ring groove which located inside the hole to which is attached to
the Vi adjusting rod of bearing head.
When press fitting the bearing, it is recommended to prepare a collared plastic cylinder (spacer) that
exactly fits inside the inner diameter
of the bearing and also a collared weight that fits inside the
plastic cylinder as shown in Figure 5-
14. Then, hit the top of the weight for easy press fitting of the
bearing. Instead of the above, special tools are also available from us for the main and side bearings.
These tools are similar to the above described weight, and the surface finish of which is improved to
eliminate the need of a plastic spacer (Refer to Chapter 7, Section 7.6). You are welcome to place an
Figure 5-14 Example Tool for Press Fitting the Bearing
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