Tightening Programs

By selecting the tightening program it is possible to choose the method for applying clamping force (or pre-load) to the joint. Different joints require different strategies for how to apply the desired clamping force and to minimize unwanted in-service effects.

  • TurboTight strategy, enables the option to use Manual programming or Quick prog - for more information, see the paragraph TurboTight.

  • Quick step, Two step and Three step strategies enable the choice of tightening towards a Target torque or a Target angle value.

  • External result strategy, is used when OK tightenings are indicated by an external digital signal - for more information, see the paragraph External result.

All tightening programs require that you at least set the Target torque or Target angle value.

Parameter

Description

Default value

Strategy

Available tightening programs.

TurboTight: No additional tightening behavior is used as default. Only target values are used.

Quick step: Adds an initial tightening step to reduce pre-load scatter.

Two step: Adds a pause between the first and final tightening step to further counteract short-term relaxation effects.

Three step: Tightens to a defined First torque value, then loosens the screw and immediately retightens it to Target torque or Target angle.

Wrench - production: Tightening strategy to use with an ST Wrench.

Wrench - quality: Strategy used for quality test of tightenings with an ST Wrench.

Rotate: Rotates the spindle a specified speed and angle.

External result: presents a predetermined tightening result instead of measured torque/angle.

Multistep: Tightening strategy consisting of multiple configurable steps, with restrictions and monitors.

TurboTight

Target type

Defines the type of the target value in the final step.

Target torque: The tightening aims towards the specified target value when performing the final step.

Target angle: The tightening aims towards the specified target value when performing the final step.

 

Target torque

Defines the target torque of the tightening of the final step.

 

Target angle

Defines the target angle of the tightening of the final step.

 

Target speed

Activates setting the tool speed for the final step manually or using the default speed.

Auto: Uses a value that is calculated based on the Tool max speed.

Manual: Specify the tool speed manually.

Auto

<Manual>

Tool speed during tightening or during the final step.