Products

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Cylinders

MATERIALS

Transformer board

DESCRIPTION

Cylinders are made with precompressed transformer board type B.3.1 A with nominal thickness from 1 to 8 mm. They can be supplied in different types: open, closed multi-layered, sector and not calendered.

The longitudianl joint is made with a chamfer which varies according to the cylinder thickness and which can reach a maximum width of 170 mm. Glueing is performed using polyvinyl alcohol glue which ensures optimum resistance to oils. In the glueing area the cylinder thickness may be approx. 0,5 mm larger than the nominal thickness.

Open cylinders have the same chamfer as closed cylinders.
The main information of the product are:

Standard values of thickness	1,2,3,4,5,6,7,8 mm.
Standard values of chamfers	60,90,100,120,140,150,160,170 mm.
Minimum diameter	150 mm.
Maximum diameter	1300 mm (over 1300 mm with jointed sheets).
Maximum height	2500 mm.
Tolerances on dimensions	thickness ± 10%, internal diameter (depending on thickness) ± 1,5 to 3,5 mm, height from – 4 to + 4 mm.

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