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J.W. Winco Inc. offers GN 319.2 phenolic plastic revolving ball knobs, long shoulder type, tapped, in inch and metric sizes.
These RoHS-compliant revolving ball knobs can be utilized instead of other revolving handles, i.e. with handwheels. The tapped shoulder allows the ball knob to be mounted from the underside via a screw or bolt. The knob can then be easily mounted to sheet metal in a variety of thicknesses, flat bar, or castings, to create a quick cranking or turning mechanism.
The hand piece is black phenolic plastic (Duroplast PF), and the shoulder is made of zinc-plated, blue passivated steel, blind-tapped.
Related Glossary Terms
- flat ( screw flat)
flat ( screw flat)
Flat surface machined into the shank of a cutting tool for enhanced holding of the tool.
- turning
turning
Workpiece is held in a chuck, mounted on a face plate or secured between centers and rotated while a cutting tool, normally a single-point tool, is fed into it along its periphery or across its end or face. Takes the form of straight turning (cutting along the periphery of the workpiece); taper turning (creating a taper); step turning (turning different-size diameters on the same work); chamfering (beveling an edge or shoulder); facing (cutting on an end); turning threads (usually external but can be internal); roughing (high-volume metal removal); and finishing (final light cuts). Performed on lathes, turning centers, chucking machines, automatic screw machines and similar machines.
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