Knowledge Base Glossary

Abbreviation for: Local Area Network

The relating displacement of the two ends of the expansion joint perpendicular to its longitudinal axis. Lateral movement is usually caused by the thermal expansion of the ducting system and measured in inches or millimeters.

The offset distance between two adjacent flanges or faces. Can be due to misalignment, equipment settling, or by design to compensate for excessive displacement in the opposite direction during cycle.

A laboratory procedure that is used to determine the amount and duration of resistance of an article to a specific set of destructive forces or conditions.

Roller spaced spalling from bearings operating after etching damage.

Mechanical component that bears loads while ensuring stable and accurate linear motion.

An electric motor that produces linear motion directly, making the mechanical conversion of rotary to linear motion unnecessary.

An oil or grease placed between two surfaces in relative motion that reduces friction and wear between them.

Lack of proper lubrication at the seal interface which may cause premature wear and early failure.

The reduction of friction and wear between two surfaces in relative motion by application of a lubricant.

A term used to describe the ability of a lubricant to reduce friction between rubbing surfaces. There are no generally accepted test methods available to evaluate this property. Lubricity is important mostly in conditions of boundary lubrication and probably represents some relationship to the ability of the oil to wet the bearing surfaces and to resist being rubbed off. Lubricity has no known direct relationship to oil viscosity. It is also referred to as oiliness.