Four Step

The four step tightening strategy is divided into separate steps, that can be switched On or Off, to customize the tightening task.

Each step has a target value and may monitor other values and is divided as follows:

Step

Function

Start

The start step is used to engage the threads and to detect if a tightening has already occurred.

Rundown

The rundown step is used to run down a screw to the snug level.

Tightening

The tightening step is used to tightening the screw to a defined torque level, and may be divided into several steps. This final target value may be either a target torque or a target angle.

Stop

The stop step is to finalize the tightening in an ergonomic way.

  • Example 1: If the start and rundown steps are used to tighten a screw to the snug level, a final tightening can be made in a later step.

  • Example 2: If the tightening steps are used in a previous snug level tightening, a final assembly can be made to tighten the joint to the final target value.

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