Glossary
Joint
The location where two or more members meet, are to be met, or have been fastened together.
Joint clearnance
The distance between the faying surfaces of a joing.
Joint design
Joint deometry, including the required dimensions of the welded/brazed/bonded joint.
Joint geometry
The shape and dimensions of a joint in cross section.
Jet pulverizer
A machine that comminutes metal pieces, ores, or agglomerates.
Jig
Mechanism or fixture for holding a part and/or guiding the tool during machining, spraying or assembly operation.
Journal
The part of a shaft or axle that rotates or oscillates relative to a radial bearing. A journal is part of a larger unit, such as a crankshaft. It is preferred that the term "shaft" be kept for the whole unit.

