Free-Standing Posts are
a convenient alternative to posts with tiebars when open access
between the posts is necessary. Though generally configured
in sets of 4 and 6 legs, other configurations include 3 and
5 legs.
The independent posts offer
the maximum flexibility in post positioning with respect to the
Optical Top.
Free-Standing Posts are especially
convenient for supporting large coupled table systems.
Dimensions
and suggested layouts for Free-Standing
Individual Posts.
Posts may
be used in groups of 3, 4, 5, 6, or more.
How to order:
Determine whether vibration isolation
(Gimbal Piston Isolators) is required or whether rigid, non-resonant
support (Rigid Leveling Stand) is adequate.
Calculate the required capacity by adding
the equipment load to the optical top weight. Top weight
is equal to top area times the weight factor from the bottom
of the optical top selection charts. Generally, 2 in.(50
mm) and 4 in. (100 mm) thick tops use 11 and 12 prefix posts,
and 8 in. (200 mm) and 12 in. (300 mm) tops require 13 and
14 prefix tops.
Choose the indicated catalog number
from the ordering
chart.
4-Post Systems are recommended
for most applications. Other configurations require
that total capacity exceeds optical top mass plus
equipment load by a factor of 2. Choose the desired
number of posts.
Leveling screws may be provided
in the corners of the baseplate. This optional
feature is of great assistance on larger tables
and in labs with uneven floors. To specify, change
the fourth digit of the catalog number from “3” to “4” (for
example, 14-135-00 becomes 14-145-00). Note that
this will add one inch (25 mm) to the overall height.
Height control valve kits (included
with 4-Post and 6-Post Systems) must be specified
when ordering individual posts. Choose valve kit
from the bottom of the chart corresponding to the
chosen posts. Note that if more than 4 posts are
combined, a suffix must be added to the valve kit
corresponding to the number of posts (e.g., for
8 of 14-134-00, the correct valve kit is SV-14-8).
Contact
TMC when in doubt and for unusual configurations.
Note: Tiebars are not compatible with
Free-Standing Individual Posts.