ANSI |
The American National Standards Institute. ANSI is a non-profit organization that works to standardize many aspects of the business marketplace. |
arbor press |
A device used to install a bushing in a jig plate. The use of an arbor press prevents any distortion of the bushing. |
bushing |
A hardened steel tube used to guide cutting tools such as drills and reamers. |
case-hardened steel |
Steel that has a surface layer hardened by special heat treating methods. |
concentricity |
The degree to which a given dimension resembles a perfectly round circle or cylinder. |
counterbored |
A hole that has been slightly widened from one end to a particular depth. A counterbored hole typically provides space for a recessed bolt or screw head. |
flat clamp |
A small clamp with a flat edge that is used to lock a bushing in place. |
ground |
A surface that has been machined with an abrasive to improve finish and achieve accurate dimensions. |
gun drill bushing |
A special type of bushing that is used to guide a drill for deep-hole drilling operations. |
head press fit bushing |
A basic type of bushing with a rim or collar at the top for extra loads. Head press fit bushings are permanently installed. |
headless press fit bushing |
The most basic type of bushing. A headless press fit bushing is simply an accurate, hardened metal tube. These bushings are permanently installed. |
interference |
The degree that the diameter of an internal part exceeds the diameter of the external part when being fitted in a hole. |
jig |
A workholding device used to position and hold a workpiece while guiding the location of the cutting tool. Jigs are the only workholding device that use a bushing to guide the tool. |
knurled |
A surface that has been marked with small diamond-shaped impressions. Knurled surfaces are easier to grip. |
liner bushing |
A type of bushing that acts as a sleeve or receptable for slip and slip-fixed renewable bushings. |
load |
The weight or burden that is supported by a material. |
oil groove bushing |
A special type of bushing that contains interior grooves to encourage the flow of cutting fluids during machining operations. |
reaming |
The use of a cutting tool to smooth or enlarge a previously drilled hole. |
removable bushing |
Another term for a slip renewable bushing. |
replaceable bushing |
Another term for a slip-fixed renewable bushing. |
slip renewable bushing |
A type of bushing that can be inserted or removed between operations and held in place with a lockscrew or clamp. These bushings are replaced after excessive wear. |
slip-fixed renewable bushing |
A type of bushing that can be installed and held in place with a lockscrew or clamp. These bushings are replaced after excessive wear. |
soft material bushing |
A special type of bushing with a serrated or grooved exterior that helps hold the bushing in place when installed in softer materials. |
tolerance |
The unwanted but acceptable deviation from the desired dimension. |
tool steel |
A type of steel designed with high wear resistance, toughness, and strength. |
workholding device |
A device used to position and hold a workpiece. The workholding device references the tool performing the operation on the part being held. |