GEWEFA precision toolholders and machine clamping systems

Precision GEWEFA toolholder solutions: DIN 69893 HSK holders, DIN 69871 SK and BT face-contact arbors, Hydro-Dehn chucks, and InduTerm shrink systems.

GEWEFA DIN 69893 HSK Precision Toolholders

Precision HSK toolholder assemblies manufactured by GEWEFA ensure dependable performance for modern high-speed milling and turning centers. The hollow taper shank interface establishes simultaneous face and taper contact, eliminating tool deflection under intense dynamic loads.

Standard tapers including HSK-A, HSK-E, HSK-F, and HSK-T for multi-task CNC machinery
Fine balancing according to grade G2.5 for spindle speeds reaching up to 25000 RPM
Total runout accuracy within 0.003 mm across clamping bore and locating surfaces
Versatile toolholding adapters for ER collets, Weldon end mills, and face mill arbors

GEWEFA DIN 69871 SK and MAS BT Steep Taper Holders

Heavy-duty steep taper toolholders from GEWEFA provide supreme clamping rigidity on heavy milling machines equipped with SK and BT spindles. The specialized Face Contact system provides simultaneous contact on taper and spindle face, dampening bending vibration during deep milling.

Full compliance with DIN 69871, MAS 403 BT, and ANSI CAT industrial spindle formats
Substantial increase in assembly stiffness up to forty percent over basic steep tapers
Tough alloy steel heat-treated with surface hardness reaching 58 to 60 Rockwell HRC
Ultra-precise taper grinding meeting AT3 tolerance class for uniform contact area

GEWEFA Hydro-Dehnspannfutter Hydraulic Chucks

Precision hydraulic expansion chucks by GEWEFA utilize a sealed fluid membrane to apply uniform gripping force around cylindrical tool shanks. The internal fluid layer acts as an integrated vibration absorber, extending cutting edge life on solid carbide end mills and reamers.

Exceptional runout precision guaranteeing less than 0.003 mm radial deviation
Rapid tool clamping via a single actuation screw without specialized heating units
Effective vibration attenuation during fine milling and high-tolerance reaming passes
Reduction sleeves available to hold diverse cylindrical shank diameters securely

GEWEFA HYDROPIN Hydraulic Chucks for Lathe Tooling

Specialized HYDROPIN hydraulic lathe chucks from GEWEFA feature a transverse adjustment pin for accurate center-height alignment. Installed into CNC lathe turrets, these holders guarantee micro-level repeatability when setting boring bars and precision internal turning tools.

Integrated cross-pin mechanism for rapid and accurate setting of tool center height
Suppression of chatter and resonant harmonic vibration during deep internal boring
High-pressure through-tool coolant routing aimed directly at the workpiece shearing zone
VDI cylindrical shanks and dedicated machine interfaces for CNC turning turrets

GEWEFA InduTerm Thermal Shrink-Fit Chucks

InduTerm thermal shrink-fit chucks by GEWEFA provide supreme clamping force on solid carbide milling cutters. The slim geometric profile provides unobtrusive clearance inside deep cavities of stamping dies and molds, preventing tool slippage under aggressive machining feeds.

Powerful radial clamping force generated by thermal shrinkage of specialized tool steel
Slimline contour geometry engineered for multi-axis milling inside tight workpiece pockets
Resistant to cyclic thermal fatigue during induction heating and cooling procedures
Runout error under 0.003 mm measured at three times diameter overhang distance

GEWEFA System M96 Modular Collet Chucks

The modular collet system GEWEFA System M96 is designed for precision machine spindles on multi-spindle automatic lathes and turning centers. The modular architecture facilitates rapid tool exchanges and maintains strict concentricity during high-volume component manufacturing.

Rapid cutter interchangeability without recurring adjustments to axial gauge lengths
Robust mechanical collet grip suited for uninterrupted production schedules
Dedicated adapter mountings for automatic lathe platforms like Tornos and Index
Internal sealing design safeguarding the collet assembly from coolant contamination

Industrial precision toolholder heritage and GEWEFA manufacturing background

German machine tool equipment manufacturer GEWEFA JOSEF C. PFISTER GmbH & Co. KG has maintained specialized production operations in Burladingen since 1949.

Over decades of dedicated development, the enterprise established a complete in-house manufacturing cycle encompassing computer-aided toolholder design, high-precision grinding facilities, and advanced thermal hardening workshops.

Rigorous dimensional inspection across toolholder tapers and internal bores is conducted utilizing coordinate measuring equipment with sub-micron resolution.

Tooling assemblies from the Burladingen facility serve critical high-speed milling and turning operations throughout automotive, aerospace, and precision moldmaking industries worldwide.

DIN 69893 HSK hollow taper shank systems and fine dynamic balancing

GEWEFA DIN 69893 HSK toolholder assemblies are engineered for modern high-velocity cutting environments where minimal radial deviation is paramount.

The hollow taper shank interface provides simultaneous contact along both the internal taper and spindle face, preventing tool deflection caused by centrifugal expansion at elevated rotational velocities.

Each manufactured toolholder undergoes precision balancing to grade G2.5 for spindle speeds reaching up to 25000 RPM.

Integrated through-tool coolant channels deliver high-pressure cutting fluid straight to the cutting edge, stabilizing thermal conditions and maximizing tool longevity during continuous roughing and finishing passes.

Heavy-duty steep taper toolholders with Face Contact dual-interface technology

For milling machining centers operating with steep taper spindles under DIN 69871 SK and MAS 403 BT standards, GEWEFA introduced the Face Contact dual-interface tooling system.

This specialized design ensures simultaneous engagement between the locating taper and the spindle face flange, increasing static and dynamic assembly rigidity by more than forty percent.

This mechanical interface prevents taper movement into the spindle socket during heavy cutting passes and suppresses chatter during deep pocket milling.

Tough alloy steel with a surface hardness of 58 to 60 Rockwell HRC safeguards critical locating surfaces against permanent deformation and wear under prolonged high-torque milling.

Hydraulic expansion chuck technology and harmonic vibration absorption

Hydro-Dehnspannfutter hydraulic expansion chucks utilize a sealed fluid membrane to apply uniform radial compression around cylindrical tool shanks.

The internal fluid layer functions as an integrated vibration damper, preventing harmonic vibrations from migrating from the workpiece interface to the spindle bearings.

As a result, tool runout remains strictly under three micrometers at an overhang of three shaft diameters. Rapid tool replacement requires only a single adjustment wrench without requiring external induction heating devices, significantly decreasing setup time during production runs.

Precision HYDROPIN turning chucks with transverse center-height pin

The HYDROPIN hydraulic turning chuck series was engineered by GEWEFA to equip turning center turrets and driven tooling blocks on CNC lathes.

A distinctive design attribute is the integrated transverse adjustment pin, which allows micro-level alignment of the cutting edge relative to the machine center height.

This engineering approach eliminates boring bar angular errors and prevents taper distortion during precision internal turning of deep holes.

Uniform clamping concentricity coupled with through-tool high-pressure coolant routing maintains superior surface finishes across tight-tolerance workpiece features.

InduTerm thermal shrink-fit chucks for deep mold and die milling

GEWEFA InduTerm shrink-fit chucks provide rigid tool clamping designed for high-speed machining of deep pockets in stamping dies, injection molds, and structural components.

The slim external contour grants unobstructed clearance along steep workpiece walls, preventing toolholder collision in tight cavity corners.

Cylindrical cutting tools are gripped firmly through the thermal expansion and contraction of the bore during induction heating and rapid cooling. The heat-resistant tool steel maintains full elastic recovery across repeated thermal cycles, delivering exceptional gripping torque and concentricity.

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