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.
30 Glossary Terms Found
Failure Frequency Reduction
An application where the supplier provides product that lasts longer.
False Brinelling
Wear caused by vibration or relative axial movement between the rollers and races.
Fatigue
The weakening or deterioration of a material occuring when a repetition or continuous application of stress causes strain.
Fatigue Life
The number of cycles of stress that a metal component can sustain prior to failure under a stated test condition.
FHP
Fractional horse power
Fillet Radius
Shaft or housing corner dimension that bearing corner must clear.
Fixed Bearing
Bearing which positions shaft against axial movement in both directions.
Flange
Rim or edge projecting at right angles to provide strength, or a means of attachment to another part.
Flange Joint
A joint formed by two abutting flanges.
Flex Life
The relative ability of a rubber article to withstand cyclical bending stresses.
Floating Bearing
Bearing so designed or mounted as to permit axial displacement between shaft and housing.
Flow Direction
Direction of media (fluid, gas, air, etc.) movement through the system.
Flow Liner (Baffle)
A metal shield that is designed to protect the abrasive media in the stream and to reduce flutter caused by the air turbulence in the gas stream. Flow Liner/Baffles may be welded or bolted into position.
Flow Meter
A device used to measure the flow rate of a fluid through a pipe. In packing applications a flow meter may be used to measure the amount of flushing fluid that is entering and/or leaving the stuffing box.
Flush Port
A hole in the side of a stuffing box through which a cleansing or lubricating fluid is injected.
Flushing Fluid
A clean liquid (usually water) which is injected through a flush port to exclude solid particles from the stuffing box area and minimize abrasive wear. A flushing fluid might also be used to cool the packing in a high temperature application, or to keep air from being drawn into a pump in a suction application.
Fluting
A series of small axial burns caused by an electric current passing through the bearing while it is rotating.
Force
A push or a pull acting on an object.
Force Pounds
The total load required to deflect an expansion joint a distance equal to the maximum rated movement of the product.
Foreign Material
Any extraneous material such as dirt, sand or metal that should not normally be present in or on a product.
FPM
Abbreviation for "Feet per Minute", a measure of the surface speed of a rotating shaft.
Fretting
Wear characterized by the removal of fine particles from mating surfaces. Fretting is caused by vibratory or oscillatory motion of limited amplitude between contacting surfaces.
Friction
Resistance to motion due to the contact of surfaces which normally generates heat.
Friction Break-Out
Friction developed during initial or starting motion.
FSA
Fluid Sealing Association, an American-based trade association for the mechanical packing industry.
FSI
Full Service Integration. Programs that allow BDI to take over and manage all of the MRO-related processes and activities at a customer site. BDI manages all of the supply channel elements, and the end result is an annual cost savings for the customer.
Fugitive Emissions
An unintentional gaseous or liquid leakage given off by a piece of equipment.
Full Complement Bearing
A bearing without a cage that contains the maximum number of rollers and has maximum load carrying ability. The rollers are mechanically retained by the cup in most full complement drawn cup bearings.
Full-Face Gasket
A gasket covering the entire flange surface and including bolt holes.
Functional Lip Diameter
The apparent inner diameter of the seal when the seal case is concentric with the outer diameter of the sizing mandrel in an air gage, light box, or similar inspection equipment.