Pneumatic Expandable Shafts

The range of expandable shafts includes versions with slats, bent tiles and keys. Based on the accurate design of the technical office, the shafts can be made with different materials: ultra light-weight aluminium shafts, light-weight high capacity carbon fibre shafts, high capacity steel shafts

Pneumatic Expandable Shafts slides

The carbon fiber shaft by Trasco is produced by poltrusion. This system of production is used for large quantities and ensures extreme precision in size and in the percentages of materials used, this being a prerequisite for all composites. Trasco has also improved special equipment that guarantee excellent linearity to the pultruded profile, with a margin of error of 1 mm each 6 meters in length. The profile is composed by high-strength fibers (920 GPa) arranged linearly on the external part and crossed in the internal section. The amount of fibers used and their particular arrangement in the system give to the profile by Trasco a deflection strength of 270 GPa, greater than that of steel (240 GPa). It weighs 4.15 Kg/mt.
The expanding shaft in carbon fiber produced by Trasco is currently the only one with expanding lugs in the world.

Trasco manufactures special trees according to technical guidance or customer drawings. Manufacturing steel shafts and aluminum, with drives and rails, from a diameter of 12 mm, up to a maximum of 500 mm and a maximum length of 7000 mm

Expanding shaft diameter. 48.5 mm, suitable for locking souls diam. 50 mm (2 "), 3 of clamping bars
Expanding shaft diameter. 68.5 mm, suitable for locking souls diam. 70 mm, 5 clamping bars
Expanding shaft diameter. 74-74.5 mm, suitable for locking souls diam. 76 mm (3 "), 3-5 of clamping bars.
Expanding shaft diameter. 100 mm, suitable for locking souls diam. 110 mm (4 "), 6 clamping bars.
Expanding shaft diameter. 148-148.5 mm, suitable for locking souls diam. 152 mm (6 "), 6-8 of clamping bars
Rubber sleeves, suitable for locking of from 150 to 300 mm cores, to be applied on diam trees. 76-150 mm