•Shrink vs Hydraulic Holders

Shrink Fit vs Hydraulic Chuck

Shrink fit offers superb rigidity and it is almost impossible for tools to slip or pull out.
Downsides are time consuming setup from heating and cooling…
Risk of burns or fire from the heating machine…
High chatter from vibration and moderate to high runout leading to rougher finishes…
If a cutting tool is installed incorrectly, the holder can lose gripping force

Hydraulic chucks offer fast and easy setup without the need of a machine.
Runout accuracy of 3 microns and repeat chucking accuracy of 1 micron of runout. 
The oil chamber dampens vibration leading to smoother finishes.
Capable of Drilling, Reaming and light Milling.
Incorrrect cutting tool installation can damage the oil chamber breaking the holder.