User Manual
G-1
Glossary
Accuracy
How close a measurement is to the absolute quantity being measured.
Alignment
Positioning two or more machines so that the rotational centerlines of their
shafts are co-linear under operating conditions.
Anchor Bolts (or Hold-down Bolts)
Bolts use to anchor or hold the machine to the base or foundation.
Angularity
The angle between two machine shaft centerlines; this angle is the same at
any point along either centerline. Normally specified in rise/run.
Axial Float (or End Float)
Movement of one shaft along its centerline due to the freedom of move-
ment permitted by a journal bearing or sleeve bearing. This adjustment
should be set before performing vertical and horizontal moves.
Backlash
Normally refers to the torsional play caused by the design or degraded con-
dition of a flexible coupling.
Baseplate
The surface (often made of steel plate or cast iron) to which the feet of a
machine are attached. The baseplate is normally mounted on a foundation
and grout.
Baud Rate
Unit of speed for data transmission over a serial communications link. The
UltraSpec analyzer supports rates from 300 to 76.8K baud.