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GP and HT shrink-fit toolholder lines

May 01, 2010

New shrink-fit toolholders for machining centers and multitask machines are available from Kennametal Inc. The shrink-fit program is split into two lines. The GP (General Purpose) line for carbide, HSS and steel shanks can be accommodated with clamping torques suitable for most general machining tasks. For heavy roughing that requires a higher clamping torque or for cutting difficult-to-machine materials, the HT (High Torque) is recommended. The HT line has a 30 to 50 percent higher clamping torque than the GP line. The shrink-fit holders accommodate steep taper, HSK, BT, CV and DV back ends.

Related Glossary Terms

  • centers

    centers

    Cone-shaped pins that support a workpiece by one or two ends during machining. The centers fit into holes drilled in the workpiece ends. Centers that turn with the workpiece are called “live” centers; those that do not are called “dead” centers.

  • 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.

Additional Products from Kennametal Inc.

TACU ER Units and Solid ER Collets

TACU ER Units and Solid ER Collets
Kennametal announced an expansion of the turret-adapted clamping units (TACU): ER-ready driven units in conjunction with a line of solid ER collets that are threaded to accept screw-on milling cutters.

KOR 5 Solid-Carbide Endmill

KOR 5 Solid-Carbide Endmill
Kennametal announced its latest innovation in high-velocity aluminum roughing, the KOR 5 solid-carbide endmill. With this 5-flute endmill table feed rates increase up to 66% compared to commonly used 3-flute tools—redefining productivity for aircraft manufacturers and their suppliers.

KBH10B and KBH20B PCBN Inserts

KBH10B and KBH20B PCBN Inserts
Kennametal announced its latest innovation in hard turning, KBH10B and KBH20B PCBN grades, double-sided inserts for materials up to 65 HRC. The new grades deliver high productivity and long tool life when turning tool steels and other hardened materials.

Mill 4-12KT Tangential Shoulder Mills

Mill 4-12KT Tangential Shoulder Mills
Kennametal announced its new Mill 4-12KT, the next generation of tangential shoulder mills, producing high quality floor surface finishes for nearly all steel and cast iron applications.

Vibration-Free Boring System

Vibration-Free Boring System
Kennametal’s latest weapon in the war on chatter is one that will have machinists everywhere saying, “I need that.” The new boring system boasts the most effective antichatter mechanism ever developed by Kennametal, and also offers an extensive range of indexable heads and shank sizes.

APX series of ROCTEC Waterjet Nozzles

APX series of ROCTEC Waterjet Nozzles
The Kennametal APX series of ROCTEC nozzles provide 20 percent greater life than the industry-leading ROCTEC 500 waterjet series, which already significantly outperforms other conventional tungsten carbide nozzles. The APX nozzles are suitable for use in precision cutting applications where long,…

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HARVITM Ultra 8X Helical Milling Cutter
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Narrow Slotting Cutter
If you’ve ever struggled with inserts coming loose during a slotting operation, keep reading. How about inconsistent slot widths, fumbling with awkward screws and inserts on a slotting cutter, or having to use a piece of shim stock to pry wedged chips from deep inside a slotted workpiece? These are…

KBH10 Uncoated PCBN Turning Insert

KBH10 Uncoated PCBN Turning Insert
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Hydraulic Chuck Extensions

Hydraulic Chuck Extensions
Reaching deep inside a workpiece to drill holes can be a real bear. You’ve tried taper length and aircraft drills, but even those made of solid carbide are apt to wander when hanging out of the chuck unsupported.