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Calcimator

Collet & Chuck Capacity Calculator

Determine workholding size range for collet and jaw chuck types. Check if your part diameter fits within the clamping range.

Inputs

in
in
in
lbf
in

Results

Part Fits

1

Min Diameter0.99 in
Max Diameter1.02 in
Effective Grip Force4,500 lbf
Typical TIR0 in
How to Use This Calculator
  1. Select holding type (collet or jaw chuck) and enter the nominal collet or chuck size.
  2. Enter the collet collapse range (mm) or jaw stroke for chucks.
  3. Input maximum grip force and your workpiece diameter.
  4. Review whether the part diameter falls within the holding range and effective grip force.
  5. Check typical TIR (concentricity) to ensure the workholding meets your tolerance requirements.

What each input means

Holding Type
Type of workholding device.
Nominal Size
Nominal collet size or chuck jaw center diameter.
Collet Collapse Range
Collet clamping range above and below nominal (e.g., ±0.015").
Jaw Stroke
Total jaw travel distance (for chuck type).
Max Grip Force
Maximum clamping force of the workholding device.
Part Diameter
Diameter of the workpiece to be held.

What each result means

Part Fits
1 = Yes, 0 = No

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Holding Type = 0, Nominal Size = 1, Collet Collapse Range = 0.015, Jaw Stroke = 2 = 6 input(s) provided
  2. Calculate Part Fits
    Part Fits
    1 = 1
  3. Calculate Min Diameter
    Min Diameter
    0.985 = 0.985
  4. Calculate Max Diameter
    Max Diameter
    1.015 = 1.015

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