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Foundation
A rigid foundation is necessary for smooth, stable,
and reliable operation.
A satisfactory bond between the foundation and the
grouting is required. The foundation surface must
be roughened (if not cured rough) and cleaned
before the bedplate or soleplate (hence forth will be
referred to as bedplate) is secured to it.
Foundation Anchor Bolt
The purpose of foundation bolts is to anchor the
motor and bedplate to the foundation such that,
structurally, the foundation, motor, and bedplate
become a single mass (see
The bolt is enclosed in a casing three or four
diameters larger than the bolt. This allows the bolt
to be sprung horizontally when placing the motor
bedplate in position for mounting — this permits
slight adjustments for errors in the bolt position.
Concrete is not placed inside of the casing at the
time that the foundation is poured. Instead, the
casing is filled with grout at the time that the motor
is finally grouted into position.
Note:
If ever a hammer is used to make
frame position adjustments, a light tap
is all that is ever required. NEVER
hammer the shaft of the motor to adjust
its position.
A foundation template, pattern, or frame, usually
fabricated from wood, should be used to support
the bolts and casings while the foundation is being
built up around them. The dimensions required in
constructing the supporting frame for the bolts and
casings may be obtained from construction
diagrams or by measuring the base of the motor.
Figure 1. Foundation Anchor Bolt.
Top of Base
www.toshiba.com/tic/
EQP Global IEC Series Low-Voltage 50/60 Hz Metric Motor
Figure
1.).
Foundation
Anchor Bolt
Iron Tube
(3 to 4 diameters
larger than the
bolt)
Motor Size, Compliance, & Installation
Figure 2. Mounting Foundation.
Foundation
The motor is to be mounted securely onto a
bedplate that is rigid enough to prevent any base-
to-motor or motor-to-base vibration. The base must
not impose bending or twisting strains on the motor
housing.
Slotted shims are recommended when mounting
the motor as it may be necessary to remove or add
shims when aligning the shafts. The use of proper
shims inserted under each mounting foot will
prevent distortion of the motor housing when the
foundation bolts are secured (see figure 2).
The following procedure is recommended for
mounting the motor.
Note: Where
available, use the
Jacking Screw to
raise or lower the
motor when
Figure 3. Jacking Screw.
shimming. Shims
used shall be the
same size as the foot print of the motor (see
figure 3).
1. Identify the mounting foot of the motor that will
require the most shims and install shim(s) to that
mounting foot.
Note:
Use a small number of thick shims
rather than a large number of thin
shims (5.0 mm [0.20"] max.).
2. Tighten the shimmed foundation bolt.
3. Insert feeler gauge under the remaining mount-
ing feet to determine the thickness of shims
required.
4. Insert the required number of shims under each
mounting foot and tighten the foundation bolts.
Bedplate
7
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