Leitz HSK63F Premium Shrink Fit Chuck d12 x A75 x L100
Thermo-Grip Shrink Fit
Chuck HSK63F
Premium thermal shrink-fit toolholder engineered for rigid 12 mm shank clamping, low runout, and stable high-speed CNC machining. Its 75 mm projection length, 100 mm total length, HSK63F spindle interface, and G2.5 balancing support precision production with compatible carbide and PCD tooling.
Main Product Description
The Leitz Thermo-Grip HSK63F Shrink Fit Chuck L37712 is designed for CNC production where rigid tool retention, low runout, and consistent surface quality are essential. Inductive heating expands the 12 mm clamping bore for tool insertion, and controlled cooling creates uniform 360-degree grip around a compatible h6 cylindrical shank.
A 75 mm projection length and 100 mm total toolholder length provide useful reach for nesting, pocketing, profiling, and jointing operations while preserving a slim external form for machining clearance. The monoblock hot-work-steel body helps limit vibration and maintain dimensional stability through repeated thermal cycles.
The supplied specifications identify concentricity below 0.003 mm at the bore entry and G2.5 balancing verified up to 24,000 RPM. This controlled spindle-to-tool interface supports compatible 12 mm solid-carbide and PCD shanks while helping reduce chatter, uneven edge loading, and premature cutting-edge wear.
Best Fit Applications
Product Highlights
Uniform Thermal Grip
Thermal contraction applies continuous radial clamping around a compatible 12 mm h6 cylindrical shank without a split collet.
Low-Runout Toolholding
Concentric retention helps distribute cutting loads evenly and protect premium carbide and PCD cutting edges.
High-Speed Dynamic Balance
G2.5 balancing verified up to 24,000 RPM supports stable spindle operation during demanding CNC production cycles.
Compatibility & Installation Notes
Use only with compatible HSK63F spindle receivers, an induction shrink station calibrated for this chuck, and clean 12 mm h6 cylindrical tool shanks. Inspect the bore and tool shank for debris, pitting, rust, or damage before heating. Follow approved heating and cooling procedures, verify complete spindle seating, and never exceed specified RPM, projection, or machining limits.
Improve High-Speed Toolholding Accuracy
The Leitz Thermo-Grip HSK63F Shrink Fit Chuck L37712 provides a rigid thermal-clamping interface for compatible 12 mm solid-carbide and PCD tooling. Its 75 mm projection, 100 mm total length, HSK63F spindle mount, and low-runout construction support precision machining in automated cabinet, panel, and millwork production.
Hot-work-steel construction, uniform radial grip, and G2.5 balancing help reduce vibration, improve finished surfaces, and preserve tooling life when the chuck is heated, installed, cooled, and maintained according to approved procedures.