Tool Holders

Shrink Fit Holders

Shrink Fit Holders are precision balanced to 25,000 RPM @G2.5 for high speed applications such as when machining with small diameter tools. 

ShrinkFit Tool Holder

Techniks Shrink Fit Holders are made from H13 steel to provide reliable performance through thousands of tool change cycles and for compatibility with fast induction shrinkfit machines such as Techniks ShrinkSTATION and ShrinkPRO units. Shrink Fit Holders are precision balanced to 25,000 RPM @G2.5 making them an excellent choice for high speed applications such as when machining with small diameter tools. All Techniks Shrink Fit Holders are manufactured to provide repeatable accuracy of less than 0.0001” runout to maximize tool life and performance. Extended gage lengths are available for long reach applications such as machining on horizontal machining centers.

Shrink fit tool holders grip the cutting tool shank directly, with a concentric clamping force of 10,000 lbs. or more. That keeps runout (T.I.R.) to a maximum of 0.0001", so you can run faster and your cutters last longer. Tools are changed with an induction shrink fit machine, which heats the holder.

Our shrink fit holders are balanced to 25,000 RPM at G2.5, and most come with a coolant-thru set screw installed.

Which shrink fit holder

PageSpindle or shankBores
HSK Shrink Fit HoldersHSK40E (also SlimPRO), HSK50E, HSK63F1/8" to 1"; 3 to 10, 20 and 25 mm
BT Shrink Fit HoldersBT30, BT403/16" to 1-1/4", 6 to 12 mm
ISO Shrink Fit HoldersISO301/4" to 1"
Shrink Fit Extensions5/8", 3/4" or 1" straight shank1/8" to 5/8"

Shrink fit extensions

Universal shrink fit extensions have a 5/8", 3/4" or 1" straight shank and a shrink fit bore, so they turn any holder that takes that shank into a shrink fit holder: collet chucks, hydraulic chucks, end mill holders and shrink fit holders. They add reach with a narrow nose for tight clearances.

Other holders: Collet Chucks and ETP Hydro-Grip Hydraulic Chucks.