DRKM adjustable Expandable Mandrel adopts Germany and Switzerland technology and according to world transformer manufacture industry requirement, we research and develope. It is suitable for all kinds of coil winding for big, middle, large transformer. This mandrel structure is logical, high rigidity, well auto-locking, wide adjustment and simple operation. At the same time, our company can supply suitable Expanding Mandrel according to client special requirement. Our company research and develope the maximum adjustable Expandable Mandrel  of Asia (diameter phi 2800~3200, stays length 5000mm, total length 5800mm), now this type have been in working domestics Changzhou City, high performance.With CE,ISO9001:2008 certificate.

Expandable mandrel  technical parameters

own expanding/reducing size	400-530
additional expanding/reducing size	520-650
Load capacity	2 tons
PAD length	1900mm
length(include Adaptor)	≤2600mm
Rib quantity	12EA
Real circle tolerance	≤1.5mm
Gap between link pad	≤50mm