Flowserve GCX Series - Manual (Page 3)

3
1.5 Check equipment dimensions to ensure that they are within the
specifications shown in Figures 1, 2, and 3. Critical dimensions
from Figure 2 include:
• Box Bore (dim ØC)
• Box Depth (dim G)
• Distance to First Obstruction (dim K)
• Pump Frame accommodates Gland OD (dim E)
1.6 Check gland bolting to ensure that bolt diameter and bolt circle
conform to the dimensions shown in Figure 2 and 3. (dims C & M)
1.7 Handle the GCX with care, it is manufactured to precise tolerances.
The sealing faces of the GCX seal are the stationary face and the
rotating face. They are lapped flat to within three helium light bands
(34.8 millionths of an inch). Keep the seal faces perfectly clean at
all times.
Seal Chamber Requirements Figure 1
To first obstruction
Face of seal housing to be square to the axis
of the shaft to within 0.013 mm per millimeter
(0.0005 inches) of seal chamber bore FIM and
have a √1.6
μ
m (63
μ
inch) R finish or better a
Gland pilot can be at either of these
register locations, concentric to within
0.13 mm (0.005 inch) FIM of shaft or sleeve OD
Seal housing bore to have √3.2 μm
(125 μinch) R finish or better
Sleeve or shaft finish to be
0.8 μm (32 μinch) R or better
a
a
Shaft or sleeve OD
+0.000 mm (+0.000 inch)
-0.050 mm (-0.002 inch) ANSI
+0.000 mm (+0.000 inch) API 610/682
-0.025 mm (-0.001 inch) DIN/ISO
• Bearings must be in good condition
• Maximum lateral or axial movement of shaft (end play) = 0.25 mm (0.010 inch) FIM
• Maximum shaft runout at face of seal housing = 0.05 mm (0.002 inch) FIM
• Maximum dynamic shaft deflection at seal housing = 0.05 mm (0.002 inch) FIM