Expanding shaft 100% carbon fiber with ledges mod. 640 PLC


The 100% carbon fiber expanding shaft with ledges mod. 640 PLC is particularly suitable for winding and unwinding with cores that require high speeds, resistance, and lightness.

Svecom – P.E. has filed a patent for a shaft entirely made of carbon fiber.

The new expanding shaft with three ledges entirely made of carbon fiber is a real revolution in the world of expanding systems: its mechanical properties are unique in the sector.

A higher elastic module gives it greater rigidity and consequently, when a high load will be applied it will undergo minimal deformations.

Lightness is another distinctive element: the weight is significantly lower than traditional steel or aluminum expanding shafts: -65% compared to steel shaft, -15% compared to aluminum shafts, -37% carbon fiber shaft with steel inserts.

Critical speeds increase significantly: +80% compared to steel shaft, +19% compared to aluminum shaft, +39% compared to carbon fiber shaft with steel inserts.

The solution developed by Svecom also allows to widely range the geometry of the project and thus meet all costumer needs.

The new Svecom expanding shafts are available upon request, so please contact us to find the most suitable carbon fiber shaft for you.

Differences compared to traditional expanding shafts:


-65% of weight

+80% of critical speeds


-15% of weight

+19% of critical speeds


-37% of weight

+39% of critical speeds

Require an estimate


Core diameter: 75,2 mm

Face width: up to 2800 mm

Expansion range: 6 mm on diameter


Contact SVECOM for Non-Standard requirements.

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