Technical Information

Heat-Activating Systems
Shorter cycle time, less cooling downtime, localized heating, and integrated
cooling systems are essential for a safe and simple heating system. Shrink Fit
heating systems include induction, hot-air, and open-flame methods, with
induction being the easiest and fastest of these systems.
Toolholders
• Slim design.
• Balanced.
• Flatted-style, Weldon ® , and Whistle Notch shanks can be gripped. Optimal
results are obtained with smooth, cylindrical shank cutting tools — without
flats and/or notches.
• Avoid using carbide tools with polished shanks. This will reduce
torque values by 60%.
HT (High Torque) Shrink Fit Toolholders
HT Shrink Fit holders have a high interference level that offers 30–50% greater
torque than competitive systems. This line is only to be used with carbide tools
because of their low thermal expansion coefficient. These toolholders require
a machine with at least 10 kW of power to apply heat quick enough to avoid
heating the tool.
GP (General Purpose) Shrink Fit Toolholders
GP toolholders enable the use of all materials and extensions because
they have lower interference levels. Operators should use this style if not
generating high cutting forces.
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HEAT
HEAT
Ideal Surface Quality
• Metric (ISO standard) Ra ≥0,8 μm surface finish.
• Inch (industry standard) Ra ≥32 μin surface finish.
Technical Information
Shrink Fit
®
®
(continued)
M79
Technical Information