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Toolholding System covers carbide, steel, and HSS shanks.
August 31, 2009 -
Designed for machining centers and multi-tasking machines, shrink-fit toolholding system includes 2 series. GP (General Purpose) series accommodates carbide, HSS, and steel shanks with clamping torques suitable for general engineering, die and mold, automotive, and other machining tasks. (High Torque) series accommodates heavy roughing operations requiring higher clamping torque levels or machining of difficult-to-cut materials. Shrinking and cooling process does not exceed 30 sec.
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New Shrink-Fit System from Kennametal Covers Carbide, Steel, and HSS Shanks
Supports Aggressive Cutting, Increased Accuracies in Tough Materials
LATROBE, PA - As part of its complete tooling solution from the spindle face to the cutting edge, Kennametal announces its new shrink-fit toolholding system for machining centers and multi-tasking machines.
The new shrink-fit program is split in two lines. With the GP (General Purpose) line, carbide, HSS, and steel shanks can be accommodated with clamping torques suitable for most general engineering, die and mold, automotive, and other machining tasks.
For heavy roughing operations requiring a higher clamping torque level, or for machining difficult-to-cut materials such as those found in the aerospace industry, the HT (High Torque) line is recommended. The HT line has a 30% to 50% higher clamping torque compared to GP line. The results are improved chip removal, faster performance, and increased productivity for the end user.
For tolerancing hollow-shank (HSK) toolholders, taper is much tighter than that of any conventional 7/24 taper shanks. For example, with an HSK63A, the taper tolerance is in the neighborhood of several microns, or roughly one and a half ten-thousandths of an inch. "Think about holding a bore size within a tenth and a half," says product manager Oliver Moeller. "Naturally, the tolerance of the corresponding spindle taper is even smaller. Due to the trend toward higher cutting speeds, all HSK-shrink fit toolholders of the new design have balancing quality of G2.5 at 25,000 rpm."
In addition, the new Kennametal shrink-fit program also accommodates steep taper, BT, CV, and DV back-ends.
In summary, the key benefits are:
a very rigid and accurate connection to the tool holder
a shrinking and cooling process that will not last more than 30 seconds
very precise concentricity (3µm)
major process advantages in milling operations
slim profile for chucks for milling deep cavities
through-hole for coolant
axial adjustment/ backstop
accommodates roughing, semi-finishing and finishing operations.
For more information, visit www.kennamtal.com.
Kennametal Inc., Latrobe, PA; 800.446.7738.
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