Knowledge Base Glossary
Glossary is usually defined as an alphabetical list of technical terms in some specialized field of knowledge. This knowledge base glossary provides a collection of knowledge base documents that define many technical terms. These terms are arranged alphabetically, but you can quickly jump to a specific term by selecting its first letter from the index of the knowledge base glossary below.
15 Glossary Terms Found
DC
Direct Current
Dead-End Housing
A housing that is not through bored. The machining stops part way through the housing forming a blind hole.
Deformation
A stress induced change of form or shape.
Design Temperature
The maximum or most severe temperature expected during normal operation caused by equipment failure.
Dial Indicator
A measuring device, equipped with a readout dial, used most often to determine end motion or irregularities/runout.
Die Cut
Shaped articles cut with a die from a sheet of material.
Die Forming
A manufacturing process in which braid or graphite foil is compressed in a mold to form a ring.
Dielectric Strength
The measure of a products ability to resist passage of a disruptive discharge produced by an electric stress described in volts/mil (1 mil = 0.001").
Dirty Power
The term used to describe any type of abnormality in the electricity that runs a facility. Could be a surge, a spike, a transient, a fluctuation, an interruption, or noise.
Discharge Pressure
The fluid pressure measured on the discharge (or outlet) side of the pump where the fluid exits the volute.
Drawn Cup Needle Roller Bearing
A needle roller radial bearing with a thin, pressed steel outer ring (drawn cup). It is usually employed without an inner ring. Available in caged and full complement designs. Drawn cup bearings are normally supplied with both ends open, but most sizes are also available with one end closed. A drawn cup bearing can only carry a radial load.
Drill Pattern
The systematic location of bolt holes on the mating and expansion joint flange through which the expansion joint will be attached.
Ductility
The ability to be drawn. Example: The stretching of metal wire to a smaller cross-section.
Dynamic Runout
Twice the distance the center of the shaft is displaced from the center of rotation and expressed in TIR. That runout to which the seal lip is subjected due to the outside diameter of the shaft not rotating in a true circle. Synonym: Shaft Runout.
Dynamic Seal
A seal required to prevent leakage past parts which are in relative motion. The opposite of static seal.