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Table 42 — 19XR Two-stage Compressor Frames 6 and 7 Fits and Clearances
ITEM
A
Low Speed Journal — Compressor End
B
Low Speed Journal —Motor End
C
Low Speed Labyrinth — Compressor End
D
Low Speed Shaft Thrust Float
E
Impeller Bore to Shaft — 1st Impeller
F
Impeller Bore to Shaft — 2nd Impeller
G
Low Speed Bearing Labyrinth to Shaft — Motor End
H
Low Speed Bearing to Cover Assembly
I
Bull Gear to Low Speed Shaft
J
High Speed Shaft Labyrinth to High Speed Labyrinth Sleeve
K
Balance Piston Labyrinth to 2nd Stage Impeller
L
2nd Stage Eye Labyrinth to Impeller
M
Interstage Labyrinth Spacer to High Speed Shaft
N
Interstage Labyrinth Seal
O
1st Stage Eye Labyrinth to Impeller
NOTE(S):
a. All clearances for cylindrical surfaces are diametrical.
b. Dimensions shown are with rotors in the thrust position.
c. 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.
Fig. 55 — Compressor Fits and Clearances — Two-Stage Compressor, Frame Sizes 6 and 7
COMPRESSOR
DESCRIPTION
LOW SPEED BEARING
MOTOR END
SEE DETAIL D
FRAME 6 (in.)
FRAME 6 (mm)
0.006/0.007
0.004/0.005
0.009/0.013
0.008/0.020
–0.002/0.000
–0.002/0.000
0.009/0.013
0.002/0.004
–0.001/0.000
0.006/0.009
0.008/0.012
0.008/0.012
0.001/0.002
0.011/0.017
0.016/0.020
LOW SPEED BEARING
COMPRESSOR END
SEE DETAIL B
HIGH SPEED BEARING
MOTOR END
SEE DETAIL C
83
a,b,c
FRAME 7 (in.)
0.15/0.18
0.006/0.008
0.10/0.11
0.004/0.006
0.23/0.32
0.009/0.013
0.20/0.50
0.008/0.020
–0.05/0.01
–0.002/0.000
–0.06/0.01
–0.002/0.000
0.23/0.33
0.010/0.012
0.04/0.10
0.001/0.003
–0.03/0.00
–0.0013/0.0000
0.15/0.23
0.006/0.009
0.20/0.30
0.008/0.012
0.20/0.30
0.012/0.016
0.02/0.05
0.001/0.003
0.29/0.42
0.009/0.012
0.41/0.50
0.024/0/028
AERO
SEE DETAIL A
FRAME 7 (mm)
0.15/0.19
0.10/0.15
0.23/0.33
0.20/0.50
–0.05/–0.01
–0.05/–0.01
0.25/0.30
0.03/0.08
–0.033/0.000
0.15/0.23
0.20/0.30
0.30/0.40
0.04/0.07
0.23/0.30
0.62/0.72
a19-2217
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