File No: 10.833 Seal Bearing w/o Impeller
Product Information
The Seal Bearing Assembly is a component used in pumps to
support the rotating shaft and provide a seal to prevent leakage.
It is designed to be durable and reliable, ensuring smooth
operation of the pump.
The Impeller Kit includes the impeller, which is responsible for
creating fluid flow within the pump. It is designed to work
seamlessly with the Seal Bearing Assembly.
Product Usage Instructions
- Shut off the electric power supply to the pump. Drain the
system or close gate valves if available. Loosen the set screw holding the 4-spring coupler to the shaft
of the bearing assembly. Loosen it enough so that the set screw
clears the recess in the shaft (refer to fig. 1a). If a
flanged/sleeve type coupler is used, this step is not necessary
until after step 2b.If the motor assembly is attached to the coupler, remove it by
removing the 4 cap screws (refer to fig. 1).- Remove the bearing assembly from the pump body by removing the
body cap screws (refer to fig. 2). - If you are replacing the seal bearing assembly with the
impeller kit, skip to step #6. Otherwise, continue with step
4. Remove and clean the impeller from the old bearing assembly.
Position the new bearing assembly on a wood block (refer to fig.
3) to force the shaft upward while installing the impeller. Then
install the impeller as follows:- Remove the hex nut and lockwasher (cap nut and ring washer on
bronze assemblies) and discard the plastic sleeve (refer to fig.
3a). - Determine if a cup retainer is needed. If the hub of the
impeller is not machined (refer to fig. 3b), use the cup retainer.
If the hub of the impeller is machined (refer to fig. 3c), then
discard the cup retainer. - Assemble the impeller to the shaft, using the lockwasher and
hex nut (or ring washer and cap nut on bronze assemblies). Tighten
the nut securely.
- Remove the hex nut and lockwasher (cap nut and ring washer on
- Remove and discard the old gasket. Clean off the area in the
pump body (refer to fig. 4). - With the new gasket in place, fit the Seal Bearing Assembly /
Impeller kit into the pump body and tighten the body cap screws
(refer to fig. 5). Note that a gap between the bearing assembly and
pump body is normal when using an Armstrong bearing assembly with
any circulator, so do not overtighten the body cap screws. Connect the coupler to the shaft of the bearing assembly by
placing your thumb behind the coupler-half to be attached and
sliding it onto the shaft. Take care to line up the set screw with
the recess in the shaft. Securely tighten the set screw in the
recess and attach the motor assembly to the bearing assembly with 4
cap screws. If you have couplers with 2 set screws, tighten one in
the recess and one snug on the shaft (refer to fig. 5).If you have a maintenance-free SBA (part number contains MF or
product labeled as does not need any oiling or greasing), proceed
to step #10.Add the complete contents of the oil bottle (or bottles)
supplied to the oil cup on the bearing assembly.This motor has been lubricated properly at the factory. At the
start of each following heating season, however, on motors with oil
cups, add 15 drops of SAE 30 non-detergent oil to each motor
cup.If the motor is fitted with grease fittings, follow the motor
manufacturer’s recommended procedure. Motors without oil cups or
grease fittings are custom-greased for several years of operation
and require little or no attention.- Prior to startup, the pump must be fully primed. Fill the
system piping and pump body, and vent the complete system while
turning the pump by hand to dislodge air from the body.
S E AL B E AR I N G A SS E M B LY |
INSTALL ATION AND OPER ATING INSTRUCTIONS
File No: 10.833 Date: september 11, 2020 Supersedes: 10.833 Date: december 12, 2013
replacement of seal bearing assembly (with or without impeller kit)
fig 1. Removing motor assembly fig 2. Removing bearing assembly fig 3. Installing impeller on new bearing assembly
1 Shut off electric power supply to pump. Drain system (or close gate valves if available).
2a Loosen set screw holding 4-spring coupler to shaft of bearing assembly. Loosen enough so that set screw clears recess in shaft (fig. 1a). If flanged/sleeve type coupler is used, step 2a is not necessary until after step 2b.
2b Remove motor assembly (and attached coupler) by removing 4 cap screws. See fig. 1.
3 Remove bearing assembly from pump body by removing body cap screws (fig. 2).
if replacing the seal bearing assembly with impeller kit, skip to step #6.
4 Remove and clean Impeller from old bearing assembly.
5 Position new bearing assembly on a wood block (fig. 3) to force shaft upward while installing Impeller. Then install impeller as follows:
a. Remove hex nut and lockwasher (cap nut and ring washer on bronze assemblies) and discard plastic sleeve (fig. 3a).
b Determine if cup retainer is needed. If hub of impeller is not machined (fig. 3b), use cup retainer. If hub of impeller is machined (fig. 3c), then discard cup retainer.
c Assemble Impeller to shaft, using lockwasher and hex nut (or ring washer and cap nut on bronze assemblies). tighten nut securely.
6 Remove and discard old gasket. Clean off area in pump body (fig. 4).
7 With new gasket in place, fit Seal Bearing Assembly / Impeller kit into pump body and tighten body cap screws (fig. 5).
important: Gap between bearing assembly and pump body is normal when using an Armstrong bearing assembly with any circulator; do not overtighten body cap screws.
8 Connect coupler to shaft of bearing assembly by placing thumb of one hand behind coupler-half to be attached and sliding it onto shaft, using care to line up set screw with
installation and
Seal Bearing Assembly /
o perat i ng i nstr uct i on s Impeller kit
2
fig 4. Cleaning off gasket area fig 5. Installing bearing assembly to body
recess in shaft. Securely tighten set screw in recess and attach motor assembly to bearing assembly with 4 cap screws. In case of couplers with 2 set screws, tighten one in recess and one snug on shaft (fig. 5).
9 If you have a maintenance free sba (part number contains MF or product labelled as does not need any oiling or greasing) go to step #10.
Add complete contents of oil bottle (or bottles) supplied to the oil cup on bearing assembly.
This motor has been lubricated properly at the factory. At the start of each following heating season, however, on motors with oil cups, add 15 drops sae 30 non-detergent oil to each motor cup.
If motor is fitted with grease fittings, follow the motor manufacturer’s recommended procedure. Motors without oil cups or grease fittings are custom-greased for several years operation and require little or no attention.
10 Pump must be fully primed before start-up. Fill system piping and pump body and vent complete system, turning pump by hand to dislodge air from body.
11 Restore electric power supply and test for proper operation.
12 Follow the remaining steps as applicable from # 1 thru # 11 to change 6 series sba (fig 7a).
13 Face plate along with fasteners has to be removed while replacing the sba with or without impeller kit (fig 7b).
fig 6. Replacing motor assembly
Faceplate with fasteners (Piping & motor not shown for clarity)
gasket
faceplate 8x fasteners
sba 6
fig 7a. sba 6 series with Face plate
fig 7b. sba 6 series with Face plate details (exploded view)
Seal Bearing Assembly /
installation and
Impeller kit oper ating in struct io n s
3
toronto
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dynamostraße 13 68165 mannheim germany +49 (0) 621 3999 9858
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