Both expand with wrenches and are economical choices for applications that require centering but do not have severe operating conditions. Rewinding or unwinding, where pneumatic expansion is not possible or preferred.
Air is introduced through separate port on flange or body to deflate.
Chucks can have either flange or shaft extension mounting. Also available are lightweight adapters that easily slip over and lock into the base chuck with three locating pins for quick changeover to larger size cores and transmission of torque. Normally expanded with springs and deflates with air. Call us with your requirements. Recommended especially for steel cores, or for any heavy-duty extremely high torque application.