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ebearing.com
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Definitions (193)
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armology
A hard plating applied to bearings for wear resistance and corrosion protection. The hardness is approximately 72 on the Rockwell C scale.
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babbitt
Patented high-lead and high-tin alloys used to reduce friction in plain bearings.
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bainite
See also austeniting
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ball bearing
Generally, any rolling element bearing which uses balls as the friction reducing elements. There are three general types of ball bearings, reflecting the direction of the load the bearing is designed to carry: radial, thrust, and angular contact.
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ball screw
A linear motion bearing where the inner race is helical. Each ball screw assembly consists of a screw with a precision ground or rolled helical groove, a nut (the outer race) with an internal groove, and a circuit of precision steel balls that recirculate in the grooves between the screw and nut. This anti-friction design converts torque to thrust [..]
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barkhausen noise / barkhausen effect
Named for Heinrich Barkhausen (1881-1956), German professor who predicted the phenomenon of small magnetization "jumps" between Weiss domains in magnetized ferrous materials. These jumps are due to domain walls being pinned and released from microstructural obstacles such as grain boundaries and inclusions. In 1919, Professor Barkhausen i [..]
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bearing
Any device designed to reduce friction, also designed to constrain motion of mechanical devices along one or more axes. Rolling element bearings generally have three components: an inner race, an outer race (or housing) and rolling elements. Plain bearings and bushings generally are one-piece units where the rotating element rides directly against [..]
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bearing frequency calculations
Calculations involving the dimensions, rolling element location and speed, pitch circle, and inner and outer race speeds. Bearing Frequency Calculations normally involve four fundamental frequencies: BPFI
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black oxide
A black metal finish produced by immersing the item in hot oxidizing salts or salt solutions.
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