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Positrol > Inside Diameter Expanding Mandrels & Expanding Collets > Expanding Mandrels  
 

Expanding Mandrels


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Single Taper Flanged Collet Arbor Assembly

Single Taper Flanged Expanding Collet Arbor Assembly

(28)
Application:
• Used for most internal workholding applications.
• Pullback clamping action contributes to the positive location of the workpiece against the stop.
• Repeatability: .0005" T.I.R.
• Used for most internal workholding applications when the bore has an adjacent locating surface.
• Workstops are designed for individual applications.
Double Taper Arbor Assembly

Double Taper Flanged Collet Arbor Assembly

(28)
Application:
• Used for parts with longer bores or stepped internal diameters.
• Collets tend to conform to slightly tapered bores.
• Ideal for gripping in blind bores.
• Pullback action for positive location of the workpiece against the stop.
• Repeatability: .0005" T.I.R.
• Workstops are designed for individual applications.
Slow Taper Flanged Collet Arbor Assembly

Slow Taper Flanged Collet Arbor Assembly

(32)
Application:
• Used for internal workholding of parts with longer bores.
• Higher grip force compared to single and double taper arbors.
• Longer collet length allows for greater expansion.
• Pull back action for length control.
• Repeatability: .0005" T.I.R.
• Higher gripping force than single or double taper collets.
• Work stops are designed for individual applications.
• Stocked Size Range: On Availability
Hi-Torque Flanged Collet Arbor Assembly

Hi-Torque Flanged Collet Arbor Assembly

(13)

Application:

• Used primarily for gantry or robot load applications.
• Has more expansion/load clearance than typical collets.
• Used where high gripping forces are required.
• Widely used for small diameters under .50 inch.
• Permits gripping to the full length of blind bores.
• Up to three times the gripping force of other collet arbors.
• Pull back action for length control.
• Work stops are designed to suit individual applications.
• Repeatability: .0005" T.I.R.

Between Centers Collet Arbor

Between Centers Collet Arbor

(8)

Application:

• Ideally suited for grinding, turning and inspection operations between machine centers.
• Each end of the double taper collet conforms to the bore for positive gripping.
• The extended arbor body is knurled to make handling easy.
• Arranged with a flat for mounting a drive dog.
• Pull back action for length control.
• Whistle notch in the arbor body permits mounting of a work stop.
• Repeatability: .0005" T.I.R.
• Stocked Size Range: .25" to 7.00" dia
• Max. Expansion: .006" to 030"