Rollers, and balls placed between moving parts to reduce friction and wear.
One of the principal parts of a machine tool, having accurately machined ways or bearing surfaces for supporting and
aligning other parts of the machine.
Any surface that is not at right angles to another surface. Also, the name given a tool used for measuring, laying out, or
checking the accuracy of work machined at an angle or bevel.
bit, tool (cutter) -
A hardened steel bar or plate that is shaped according to the operation to be performed and the material to be machined.
To enlarge and finish the surface of a cylindrical hole by the action of a rotating boring bar (cutting tool) or by the action of a
stationary tool pressed (fed) against the surface as the part is rotated.
boring bar (cuffer bar) -
A combination tool holder and shank.
boring tool -
A cutting tool in which the tool bit'. the boring bar and, in some cases, the tool holder are incorporated in one solid piece.
A long, tapered cutting tool with serration's which, when forced through a hole or across a surface, cuts a desired shape or
A nonferrous alloy consisting essentially of copper and tin.
carbide tool bits -
Lathe cutting tools to which carbide tip inserts have been brazed, to provide cutting action on harder materials than the high
speed cutters are capable of.
A principal part of a lathe that carries the cutting tool and consists of the saddle, compound rest. and apron.
case hardening -
A heat treating process, basically carbonizing. that makes the surface layer or case of steel substantially harder than the
interior or core.
castigated nut (castle nut) -
A nut with grooves cut entirely across the top face.