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Since its founding in 1952, the Precision Twist Drill brand of cutting tools has represented both reliability and quality to its broad user base. This standard continues with a selection of HSS drills and carbide rotary burs designed specifically to meet the needs of the maintenance and repair professional. Branded as PRECISIONLIGHT, this program of drills and burs will provide affordable reliability together with a level of service and support consistent with that of the balance of the Dormer Pramet broad product offering.
The HSS drill program includes screw machine, jobber, mechanics lengths and reduced shank. Providing both versatility and performance in a variety of materials, the program contains conventional 118-degree point geometries as well as 135-degree self-centering split points for more challenging applications. The range will cover most ferrous applications suitable for use in portable drilling, drill presses and other operations.
The carbide rotary bur range consists of two new material specific geometries. The Double Cut (DC) geometry is suitable for machining steels, while the Aluminum Cut (FM) is for machining aluminum and other nonferrous materials. Available in a variety of shapes, both offer improved operator control and generate less temperature which, in turn, increases tool life and productivity. These designs offer improved performance and up to 50 percent higher metal-removal rates, compared to standard carbide burs. In addition, the Type A, B, C or D fiberglass routers (FGR) are for machining fiberglass and composite materials.
Both HSS drills and carbide rotary burs are available in sets.
Related Glossary Terms
- bur
bur
Tool-condition problem characterized by the adhesion of small particles of workpiece material to the cutting edge during chip removal.
- high-speed steels ( HSS)
high-speed steels ( HSS)
Available in two major types: tungsten high-speed steels (designated by letter T having tungsten as the principal alloying element) and molybdenum high-speed steels (designated by letter M having molybdenum as the principal alloying element). The type T high-speed steels containing cobalt have higher wear resistance and greater red (hot) hardness, withstanding cutting temperature up to 1,100º F (590º C). The type T steels are used to fabricate metalcutting tools (milling cutters, drills, reamers and taps), woodworking tools, various types of punches and dies, ball and roller bearings. The type M steels are used for cutting tools and various types of dies.
- shank
shank
Main body of a tool; the portion of a drill or similar end-held tool that fits into a collet, chuck or similar mounting device.
- twist drill
twist drill
Most common type of drill, having two or more cutting edges, and having helical grooves adjacent thereto for the passage of chips and for admitting coolant to the cutting edges. Twist drills are used either for originating holes or for enlarging existing holes. Standard twist drills come in fractional sizes from 1¼16" to 11¼2", wire-gage sizes from 1 to 80, letter sizes A to Z and metric sizes.
