In CATIA V5, the FT&A workbench allows users to define tolerances, such as Size tolerances for a feature of size, either diametrical or linear size.

How to create:

Diametrical Size Tolerance

Linear Size Tolerance

Best Practices

Creating a diametrical Size Tolerance:

1.Open the Tolerance Advisor

2.Select a hole or pin,

3.Click the diameter button in the Tolerance Advisor

(CATIA V5-6R2022)

General Tolerance: Will add a standard tolerance depending on the Standard the GD&T is created in. Four standards are automatically created but is not modifiable.

oANSI B4.3-1978-f (+0.15, -0.15)

oANSI B4.3-1978-m (+0.3, -0.3)

oANSI B4.3-1978-c (+0.8, -0.8)

oANSI B4.3-1978 (+0.8, -0.8)

Numerical Values: Will add the numerical tolerance (ex: +/-0.1) to the 3DEXPERIENCE GD&T call-out and is used in 3DCS.

Turning off Symmetric Lower Limit: will show a upper and lower tolerance value, each value can be edited. (ex: +0.5, -0)

Tabulated Values: Is a standard created size tolerance. The tolerances available are not modifiable; however, a user can use a letter/number sequence ranging from A to G and 1 to 9. The setting can be used in 3DCS.

Single Limit: Will show a MIN or Max value on the 3DEXPERIENCE call-out (ex: 5.5 MAX). By adding a Delta/Nominal value, the range and offset will be modified in 3DCS to apply the MIN or MAX variation value.

Information: Will display the value as a Basic Dimension (5.45). (Basic Dimensions will not be creating in 3DCS, when Extracting GD&T).

(CATIA V5-6R2022)

Note: Extracting a Linear Size tolerance from 3DEXPERIENCE will automatically create a Slot/Tab feature.