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Positrol > Inside Diameter Expanding Mandrels  
 

Inside Diameter Expanding Mandrels


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Collet-Arbors

Expanding Mandrels


Used for most internal workholding applications.

  • Inexpensive and in stock – collets ground to part size specification
  • Pull back clamping action contributes to the positive location of the workpiece
  • Repeatability: .0005" T.I.R.
  • Manual or drawbar operation
  • Hydraulic Expanding Arbors

    Hydraulic Expanding Mandrels


    For high precision grinding inspection and turning applications

  • Ultimate precision with .0002” TIR as standard and .00005” TIR for critical applications
  • Reduce maintenance with completely sealed arbors with no moving parts
  • Grip multiple parts or multiple diameters simultaneously
  • No pullback action which is ideal for broached parts
  • Compensates for Out-Of-Round bores
  • Push-on Arbors

    Push-on Arbors


    Ideal for inspection and OD grinding applications

  • Quick load and unload
  • No moving parts to maintain
  • Repeatability standard at .0002" TIR
  • Grip diameters as small as .250"
  • Jaw Arbor

    Jaw Arbors


    Designed to allow for additional loading clearance

  • Suitable for both first and second operations.
  • Ideal for applications requiring expansion as much as .750" on diameter.
  • Repeatability on second operations as low as .0002" TIR
  • Pullback or dead length designs
  • Swivel-Grip Chucks

    Swivel-Grip Chucks

    (5)
    Ideal for gripping on castings and forging on the ID

  • Pullback feature provides positive length control and parallelism
  • Jaw/Arm assembly (not just the jaw) swivels six degrees to compensate for irregularities
  • Jaws can be individually adjusted to improve part roundness - exclusive feature
  • Two, three, four and six jaw, self centering or compensating styles available
  • Top jaws designed to suit, with or without our grippers
  • Air sensing and thru spindle coolant capable
  • Gear Arbors

    Gear Arbors


    Locate on your part's pitch diameter accurately for turning, milling, grinding and inspection applications. Whether the gear or spline is cut or formed on the inside or outside diameters - straight or helical bevel gears

  • Collet arbors
  • Hydraulic expanding arbors
  • Rotary locking splines
  • Specials that have unique advantages suited to your application
  • Positrol Workholding Superior Cincinnati Langlois City Machine Posi-nut
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