Page 30 - QR PENTRUDER 3P8

Operators Manual - High Frequency driven Pentruder 3P8 Wire Saw

Preparing and splicing the diamond wire

If it is the first time you splice a wire, you have a good chance to make a few mistakes.
As the 3P8 is very powerful, it will also tension the wire considerably more than a “normal”
machine will. To make it work for you, we prefer and recommend this procedure:

1. Cut the wire to give maximum length of bare core wire, the part of the wire that is later
crimped in the steel crimping sleeve.

Fig. 26 Cutting of the wire

2. Cut the wire gently with an angle grinder with a thin disc, rather than with the cutting
jaws supplied with your crimp tool. Thereby you can cut close to the adjacent bead,
and leave as much free core wire as possible.

3. Use a plier to pull off the spring, which usually is embedded in plastic or rubber,
between the beads, by standing on the wire, and pull the spring off the wire end.

4. Clean the core wire by scraping it with a knife. If you have a cigarette lighter at hand,
heat the core wire to burn or soften the plastic or rubber, then clean by scraping the
wire with a sharp knife edge.

5. If residue from the plastic or rubber coating is left on the wire, the friction between the
core wire and the joining sleeve may be substantially reduced, and the splice will fail
prematurely.

6. Use only joining sleeves that have a smooth inside radius at each end. Sleeves having
a sharp or chamfered (no radius) edge in the hole should not be used.

7. Please note: Do not use universal joint type (U-joint) of wire slicers. Every type we
have tested has been too weak for the 3P8.

8. If the steel crimp sleeve is crimped with its end close up towards a bead, the wire can
not flex, and will fail prematurely.

Pentruder® - Stronger than ever! Fig. 26 Joining of the wire
Applying Standards That Are Years Ahead Of the Competition.
Tractive AB 17 March 2009 Page 28