mycom 3225**C Series User Manual

2202MYJE-MY-C8-N_2018.02.
Chapter 5 Maintenance and Inspection
Compound 2-stage Screw Compressor 3225**C 5.5 Reassembly
5-48
5.5.8 Thrust Bearing Block
(Low-stage)
(High-stage)
Figure 5-15 Thrust Bearing Block
Table 5-8 Components of the thrust bearing block
P/N
Part Name
Q'ty
Low-stage
High-stage
42-1, 42-2
Thrust bearing alignment spacer (1), (2)
2
2
38-1, 38-2
Thrust bearing (1), (2)
2
2
250-1, 250-2
Thrust washer (1), (2)
2
2
40-1, 40-2
Lock washer (1), (2)
2
2
237-1, 237-2
Torsional slip washer (1), (2)
2
2
39-1, 39-2
Lock nut (1), (2)
2
2
150
O-ring, JISB2401 G220
2
-
43-1, 43-2
Thrust bearing gland (1), (2)
2
2
46-1, 46-2
Conical spring washer (1), (2)
8
8
45-1, 45-2
Hexagon head bolt (1), (2)
8
8
 The torsional slip washer [237] and lock washer [39] must be replaced with new ones.
 If the removed thrust bearing is to be installed as it is, check the marking of "M" or
"F" on the thrust bearing alignment spacer and assemble it in the same combination
as it was disassembled. This is important in controlling the end clearance on the
discharge side of the rotor.
 Even if the same bearing is installed, the work must be very carefully done as the
dimension can change if any foreign matter such as a chip of paint or dust is pinched
by the alignment spacer.
 In determining the installation direction of the thrust bearing, there are two methods
depending on the existence of an alignment "V" marking on the outer circumference
of the bearing. Install the bearing according to the following procedure provided for
each case.
The assembly sequence for this block is as illustrated in Figure 5-15. The important points to be noted
in the procedure are described below:
a) Check the marking of either "M" or "F" on the thrust bearing alignment spacer to ensure that the
units are assembled in the same combination of parts.
The front and back of the thrust alignment spacer must be distinguished when it is installed. The
larger chamfering side is on the inner machine side, and the smaller chamfering side is on the thrust
bearing side.

mycom 3225**C Series Specifications

General

Brand	mycom
Model	3225**C Series
Category	Compressor
Language	English