Dienes expansion elements – reliability and easy of use

Our offer includes a variety of high-quality and cost-competitive, easy-to-use products designed for both standard applications and individual customer requirements. Our engineers are always ready to help you – to find the right solution for all your shaft application needs.

Among the expansion elements, mechanical or pneumatic chuck and shafts are most often used.

Mechanical expansion chucks , torque activated and its main features.

• The centrifugal force of expansion elements increases with increasing tension force.
• The applied design solution causes that the smooth expansion elements (jaws) of the chucks do not damage the cores and enable its multiple use.
• Automatic roll centering.
• Possibility to use one stepped chuck for different core diameters.
• The expansion chuck can be used to fix cores made of various materials.
• Virtually maintenance-free.
• Reliability guaranteed.

Pneumatic expansion chucks shaft mounted.

• Weight reduction by 30-50% compared to traditional expansion elements.
• Polyurethane bladder as an expanding element with high abrasion resistance, ensures a return to the initial dimensions after expansion (shape memory).
• Quick mounting of cores, easy assembly and disassembly.
• Light and durable construction.
• Reliability guaranteed.

Expansion shafts.

They can be used for various diameter of cores . The clamping element of the core are expansion strips.

• Perfect for winding and unwinding of various roll diameters.
• Used for high loads on the weight of the wound / unwound material and high speeds.
• Various materials (aluminum, steel, carbon fiber) adapted to individual customer requirements and production conditions.
• High quality and reliability of work due to the use of a unique system of fixing the shaft ends.
• Mechanical / pneumatic versions.
• Reliability guaranteed.

DO YOU NEED INDIVIDUAL SOLUTIONS?

In addition to our standard products, we also offer shafts and heads corresponding to individual customer requirements, which are dedicated to special applications or new machine designs.