Benefits of Shrink Fit Tooling

Should I use shrink fit?

If you do high speed, or high torque machining you should seriously consider the benefits of shrink fit technology. Your investment will pay for itself many times over.

BT shrink fit tool holder

BT Shrink Fit tool holder

Shrink Fit Tool Changing Machine


With shrink fit toolholders vibration is reduced and cutting is noticeably faster and smoother. Manufacturing times can be reduced while maintaining the quality and accuracy demanded by today's competitive markets.

How it works

Shrink fit uses the expansion and contraction properties of metal to provide extremely powerful tool holding. The bore is slightly smaller than the tool shank, and when heated it expands just enough to allow the tool to be inserted. When it cools, the contraction of the metal holds the cutting tool with 10,000 lbs of force.

Safe, controlled induction heat from the shrinkFIT machine expands the inside diameter of the tool holder bore so the tool shank can be inserted.

shrink fit tool changing

Automatic air cooling contracts the bore to hold the tool with up to 10,000 lbs of holding power creating an extremely rigid connection between the spindle and the cutting tool.

shrink fit tool changing

Watch our ShrinkFIT Quencher in Action HERE!

Shrink Fit Tooling Features & Benefits

10,000 lbs. Holding Power ShrinkFIT Tool Changing Highest Rigidity One-Piece Tool Holder
T.I.R. 0.0002" max.

Permits increased
feeds & speeds

All but eliminates
the chance of slippage
Change tools in as
little as 6 seconds

Pre-set tools off-line

Eliminate collets and nuts

No need to use torque
wrenches or vises

Works with carbide
and HSS tools
Permits increased chip load

Improved accuracy
and repeatability

Improved carbide tool life and reduced tooling costs

Increase spindle bearing life
Best possible balance

Thin profile for machining hard to reach areas

Allows short gauge lengths for increased rigidity