A chuck assembly for holding a reel is provided. The chuck assembly includes a tubular wall defining a central hole therethrough and extending along a longitudinal axis. The chuck assembly includes a flange member that is coupled to a first end portion of the tubular wall. The chuck assembly includes first, second, third, fourth, fifth, and sixth ball roller assemblies that are coupled to the tubular wall. The chuck assembly further includes first, second, third, fourth, fifth, and sixth gripper assemblies that are coupled to the tubular wall. The second ball roller assembly is spaced 60 degrees apart from the first ball roller assembly relative to the longitudinal axis and is disposed between the first and second gripper assemblies.

A chuck includes a central shaft defining an axis of rotation, a cam seat defined by the central shaft, and a support portion partially defining a first cavity having a first orifice at a first distal end of the support portion, the first orifice operative to engage the central shaft. The support portion includes The chuck further comprises a second orifice defined by the support portion, an expansion portion arranged in the second orifice such that the expansion portion is operative to move radially in the second orifice with respect to the axis of rotation, and a follower member arranged in the cam seat. The expansion portion includes an arcuate profile comprising a core relief feature having a spacer member arranged on a portion of the support portion, the spacer member operative to impede motion of a core of a roll of material along the axis of rotation

A chuck assembly for holding a reel is provided. The chuck assembly includes a tubular wall defining a central hole therethrough and extending along a longitudinal axis. The chuck assembly includes a flange member that is coupled to a first end portion of the tubular wall. The chuck assembly includes first, second, third, fourth, fifth, and sixth ball roller assemblies that are coupled to the tubular wall. The chuck assembly further includes first, second, third, fourth, fifth, and sixth gripper assemblies that are coupled to the tubular wall. The second ball roller assembly is spaced 60 degrees apart from the first ball roller assembly relative to the longitudinal axis and is disposed between the first and second gripper assemblies.

A support spindle includes a central shaft defining a rotation axis and forming a connecting portion and a supporting portion extending from the connecting portion along the rotation axis, cam seats formed in the supporting portion, locking bodies arranged radially outside the supporting portion and in contact, by cam-follower members, with the cam seats, a supporting cage connected to the central shaft and which accommodates the locking bodies so the locking bodies can slide radially to the rotation axis with respect to the central shaft and rotate about the rotation axis with respect to the central shaft. A relative rotation between the locking bodies and the central shaft along an angular stroke causes a radial displacement of the locking bodies between a retracted position and an expanded position. The cam-follower members form a first convex cam surface in contact with a second concave cam surface of the corresponding cam seat.

A chuck includes a central shaft defining an axis of rotation, a cam seat defined by the central shaft, and a support portion partially defining a first cavity having a first orifice at a first distal end of the support portion, the first orifice operative to engage the central shaft. The support portion includes The chuck further comprises a second orifice defined by the support portion, an expansion portion arranged in the second orifice such that the expansion portion is operative to move radially in the second orifice with respect to the axis of rotation, and a follower member arranged in the cam seat. The expansion portion includes an arcuate profile comprising a core relief feature having a spacer member arranged on a portion of the support portion, the spacer member operative to impede motion of a core of a roll of material along the axis of rotation.

Disclosed is a friction ring used for gripping paper, plastic, and steel bobbins in the packaging industry. The friction ring has a body with a cam, a spiral spin groove, and stroke determining groove on its outer surface. A ball that moves is on the cam and locks the bobbin somewhere between the minimum and maximum expanding diameter to ensure the fixing of the bobbin. A synchronous ring is disposed on the body to enable the balls to move synchronously. A wire spring is disposed on the inner surface of the synchronous ring to provide tension on the ball to ensure the bobbin builds a unit with the synchronous ring and rotates on the body with minimum friction.