143
19XR,XRV COMPRESSOR FRAME 2 THROUGH FRAME 5 FITS AND CLEARANCES (in.)
*Depends on impeller size, contact your Carrier Service Represen-
tative for more information.
NOTES:
1. All clearances for cylindrical surfaces are diametrical.
2. Dimensions shown are with rotors in the thrust position.
3. Frame 3 rolling element style high speed shaft and bearing
assembly cannot be pulled from impeller end. The transmission
assembly must be removed from the compressor casting (after
the impeller is removed) and the bearing temperature sensor
must be removed from the high speed shaft and bearing assem-
bly before the high speed shaft and bearing assembly can be
separated from the transmission.
4. If any components within a rolling element high speed shaft and
bearing assembly are damaged it is recommended that the entire
high speed shaft and bearing assembly be replaced.
5. Impeller spacing should be performed in accordance with the
most recent Carrier Impeller Spacing Service Bulletin.
ITEM
COMPRESSOR FRAME 2 FRAME 3 FRAME 4 FRAME 5
CODE 201-299, 2ZZ
321-389, 3ZZ,
32E-38H
421-487, 4B1-4W7 501-599
DESCRIPTION
OIL FILM
BEARINGS
ROLLING
ELEMENT
BEARINGS
OIL FILM
BEARINGS
ROLLING
ELEMENT
BEARINGS
OIL FILM
BEARINGS
ROLLING
ELEMENT
BEARINGS
A Low Speed Journal-Gear End .0050/.0040 .0050/.0040 .0055/.0043 .0055/.0043 .0069/.0059 .0069/.0059
B Low Speed Journal-Motor End .0050/.0040 .0050/.0040 .0053/.0043 .0053/.0043 .0065/.0055 .0065/.0055
C1 Low Speed Labyrinth to Thrust Disk .0115/.0055 N/A .010/.005 N/A N/A N/A
C2 Labyrinth to Low Speed Shaft N/A .010/.005 .0095/.0055 .0095/.0055 .013/.009 .013/.009
D Low Speed Shaft Thrust Float .020/.008 .020/.008 .023/.008 .023/.008 .020/.008 .020/.008
E Impeller Eye to Shroud * * * * * *
F1 Impeller Bore to Shaft-Rear –.0020/–.0005 –.0025/–.0010 –.0014/–.0029 –.0014/–.0029 –.0019/–.0005 –.0019/–.0005
F2 Impeller Bore to Shaft-Front N/A N/A –.0005/–.0025 –.0005/–.0025 –.0014/.0000 N/A
G Impeller Discharge to Shroud * * * * * *
H Impeller Spacer to Shaft .0025/.0010 .0025/.0010 .0025/.0010 .0025/.0010 .0024/.0010 .0024/.0010
I Slinger to Shaft .0013/.0005 .0012/.0004 .0012/.0004 .0012/.0004 .0012/.0004 .0012/.0004
J Labyrinth to Slinger .013/.009 .010/.006 .010/.006 .010/.006 .010/.006 .010/.006
K Labyrinth to Impeller .012/.008 .012/.008 .012/.008 .012/.008 .012/.008 .012/.008
L High Speed Journal-Impeller End .0047/.0037 N/A .0040/.0028 N/A .0048/.0038 N/A
M
Thrust Assembly Seal Ring Axial
Clearance
.006/.002 N/A .006/.002 N/A .006/.002 N/A
N Thrust Assembly Seal Ring to Shaft .0045/.0015 N/A .0045/.0015 N/A .0045/.0015 N/A
O High Speed Shaft Thrust Float .014/.008 0 Float .014/.008 Float .014/.008 0 Float
P High Speed Journal-Gear End .0050/.0040 N/A .0048/.0038 N/A .0062/.0052 N/A
COMPRESSOR, TRANSMISSION AREA (FRAME 5 COMPRESSOR SHOWN)
a19-1635
SEE VIEW A1 OR A2
A
2
3
SEE VIEW B
4
1
D
LEGEND
1—Oil Heater Retaining Nut (Not Shown)
2—Bull Gear Retaining Bolt
3—Demister Bolts (Not Shown)
4—Impeller Bolt
Fig. 58 — Compressor Fits and Clearances — Single-Stage Compressors
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