Rectangular, Oval and square Expandable winding mandrels

Description
Customers often need to wind the foil or wire onto a mandrel which can be expanded during the winding process and then collapsed to allow the finished coil to removed. Iron cores or laminations can be inserted later in the process.
Shown below are some examples of the previous Rectangular and square designs we have made.

However, please do note that this is only a representative range, and nearly 90% of these mandrels are made to customer order and specifications - please tell us you requirement by filling out the data in the pdf file below.

english datasheet for the heavy duty coil winding machine