zerogage - Hydraulic Arbors and Chucks Hydraulic Arbors and Chucks
 
Hydraulic Chucks

The same basic principles, described for the expansion of hydraulic arbors, apply for the contraction of hydraulic chucks.

Normal Expansionor Contraction: .003 for the first full inch diameter
.002 for each additional full inch diameter

Normal expansion or contraction can be altered depending on the application.

Accuracy: Zero Gage Co. hydraulic arbors and chucks are manufactured to a standard repeatably of 0.0002 T.I.R. Other tolerances are available depending on part variables.
Diameters: 5/16" minimumfor arbors
1/16" minimum for chucks