Flowserve CBR User Manual
CBR Series
Experience In Motion
Single Inside Bellows Seal
Installation
Instructions
1 Equipment Check
To first obstruction
Face of seal housing to be square to the axis
of the shaft to within 0.0005 inches per inch of
seal chamber bore (0.013 mm) FIM and ha
ve a
√63 µinch (1.6 µm) R finish or better
a
Gland pilot can be at either of these
register locations. concentric to within
0.005 inch (0.13 mm) FIM of shaft or sleeve OD
Sleeve or shaft finish to be
32 µinch (0.8 µm) R or better
a
a
Scribe
Mark A
Shaft or sleeve OD
+0.000 inch (+0.000 mm)
-0.002 inch (-0.050 mm) ANSI
+0.000 inch (+0.000 mm) API 610
-0.001 inch (-0.025 mm) DIN/ISO
• Bearings must be in good condition
• Maximum lateral or axial movement of shaft (end play) = 0.010 inch (0.25 mm) FIM
• Maximum shaft runout at face of seal housing = 0.002 inch (0.05 mm) FIM
• Maximum dynamic shaft deflection at seal housing = 0.002 inch (0.05 mm) FIM
Scribe
Mark B
Seal housing bore to have √125 µinch
(3.2 µm) R finish or better
1.1 Follow plant safety regulations prior to equipment disassembly:
• lock out motor and valves.
• wear designated personal safety equipment.
• relieve any pressure in system.
• consult plant MSDS les for hazardous material regulations.
1.2 Disassemble equipment to allow access to seal installation area.
1.3 Remove all burrs and sharp edges from the shaft or sleeve including sharp edges of keyways and threads. Replace worn shaft or
sleeve. Make sure the seal housing bore and face are clean and
free of burrs.
1.4 Check requirements for shaft, sleeve and seal housing.
See Figure 1.
Seal Chamber Requirements Figure 1
1.5 Check assembly drawing included with the seal for specic
seal design, materials of construction, dimensions, and piping
connections.
1.6 Check shaft or sleeve OD, box bore, box depth, and distance
to rst obstruction to ensure that they are dimensionally the same
as shown on the seal assembly drawing.
2
1.7 Check gland pilot and bolt holes to ensure they are adaptable
to the equipment and are the same as shown on the assembly
drawing.
1.8 Handle all seal parts with care, they are manufactured to precise
tolerances. The seal faces; Seal Ring and Insert, are of special
importance. These two sealing faces are lapped at to within
three light bands (34.8 millionths of an inch). Keep the seal faces
perfectly clean at all times.
2 Installation
The basic CBR design is shown in Figure 2. Variations may include
rotating face gasket, seat gasket, and environmental control features.
See the Flowserve assembly drawing included with each complete seal
for details. Additional recommendations for vetical pumps are shown in
section 3.
2.1 Scribe mark A, Figure 1, on the shaft or sleeve to line up with the
face of the seal housing. The shaft or sleeve must be in its nal
axial operating position with regard to the seal housing face before
mark A is scribed.
Basic CBR Figure 2
1.19
0.06
Gland
Set
Screw
Bellows
Adapter
Gasket
Bellows
Assembly
Gasket
Stationary
Face
Seat
Gasket
3
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