Rieter Upgrades R 40 Rotor Spinning Machine

Switzerland-based Rieter Machine
Works Ltd. has released an upgraded version of its R 40 rotor spinning machine. According to the
company, the new machine can be equipped with up to 400 rotors and four robots, uses 7-percent less
energy than the previous version, and offers a simplified operation with high spinning stability.
The machine also can be equipped with fancy yarn devices from specialist manufacturers.

The updated R 40 capabilities include: rotor speeds of 160,000 rpm and delivery speeds of up
to 350 meters per minute; quick and accurate frequency-controlled drive adjustment at the machine
control panel; and quick batch changes. The company credits updated drive technology and optimized
bearing technology with reducing energy requirements. Furthermore, Rieter reports, the machine’s
Aeropiecing technology improves piecing quality; and the robot’s Expert Piecing System, which also
can be retrofitted on existing R 40 machines, offers simplified settings.

Fancy yarn devices can be added to create multicount and multitwist effects, slubs, and a
combination of multicount and slubs. Rieter can integrate the Caipo system into the machine’s ex
works under its Variospin label. Other options include software packages for designing and
analyzing the effects.

November/December 2006