Preparation process

These four processes can be used to create the hole destined to receive the CLUFIX®. Quality of preparation is, however, of overriding importance in guaranteeing optimal crimping which will result in high mechanical resistance. Use of a precision-sharpened punch is, for example, recommended - in order to limit strain-hardening of the hole.

2. Stroke adjustment
This adjustment optimises crimping quality in line with the chosen CLUFIX® and the thickness of the metal sheet to be assembled.
The crimping stroke S is calculated using the formula: S = X – E
X = variable defined for each CLUFIX® part number (available from the CLUFIX® data sheet in question)
Ep = thickness of the metal sheet to be assembled
After calculation of S, we recommend that you carry out a crimping test (using your chosen installation tool) on a metal sheet sample matching the thickness used in your application.
This test will also help you to physically check S, by noting the difference between the L measurement before crimping and Lts after installation.

Tolerance for Ls data:

Ø	M 2.5	M 3	M 4	M 5	M 6	M 8	M 10	M 12	M 14	M 16
+/-	0.3	0.4	0.4	0.4	0.4	0.6	0.6	0.6	0.8	0.8

3. Air Pressure
This parameter concerns only oleopneumatic tools.
The air supply pressure level determines the setting force of the installation tool.
To guarantee optimum crimping, we advise you to use an air pressure gauge (positioned upstream of the tooling) linked to your air pressure supply network.
The minimum pressure required is 6 bars. This value corresponds to the usual pressure of an air pressure supply network.
However, for diameters M2.5 - M3 - M4, it is possible to reduce the supply pressure in order to limit crimping constraints (particularly for aluminium).