Expanding shafts in carbon fiber provide a practical solution in applications where aluminium shafts cannot be used, for reasons of weight and reel rotation speed. Solutions in steel are normally used in such cases, but they are extremely heavy. An expanding shaft in carbon fiber is the only way to radically solve the problem. TRASCO shafts in carbon fiber are made using pultrusion techniques, and are the only type in the world involving the expansion of continuous strips.
- Thanks to the pultrusion technique, TRASCO obtains carbon fiber bars in the desired format, prepared for assembling pneumatics. As a result, TRASCO eliminates the need for any type of machining from the production process, keeping the fibers intact such that product performance is not compromised, and reducing costs and timescales.
- Expansion with continuous strips helps to reduce the weight of the expanding shaft. A central chamber, which is typical of expansion with keys and is very heavy, is not used. Expansion with continuous strips makes maintenance operations for the expanding shaft extremely quick and easy.
TRASCO has a wide range of carbon fiber profiles produced using the pultrusion technique. Thanks to special equipment, all profiles have excellent linearity characteristics, with an error margin of approximately 1 mm for every 6 m in length. TRASCO profiles are made of high-strength fibers (920 GPa). The number of fibers used and their arrangement within the pultrusion process give the profiles excellent flexural strength and very high critical rotational speed.