• Expansible Shafts Design and Construction and Consulting.

3 "Pneumatic Expanding Shafts

3 STRIPS EXTRA LIGHT VERSION

A special profile for the production of Extra Light Shafts built using a new special alloy, suitable for blocking cores with an internal diameter of 76.2 mm.

It has 3 blocking strips.

For example:

  • Centre distance between support 1200 mm 
  • Coil length 1100 mm
  • Coil weight 1000 daN
  • Approx. shaft weight 6.5 daN
  • Centre distance between support 1200 mm
  • Coil length 550 mm
  • Coil weight 250 daN
  • Approx. shaft weight 6.5 daN

3 STRIPS LIGHT STEEL VERSION

Our 3” pneumatic expanding shafts in a light steel version are obtained from a mechanic steel tube in Tenaris Dalmine quality. They are custom built according to your requirements.

They are suitable for blocking cores with an internal diameter of 76.2 mm.

It has 3 blocking strips. 

For example:

  • Centre distance between support 1500 mm
  • Coil length 1400 mm
  • Coil weight 1500 daN
  • Approx. shaft weight 22 daN

6 STRIPS NORMAL VERSION

Our 3” pneumatic expanding shafts are built of high strenght aluminun alloy profiles or in high quality steel.

They are custom built in according to your requirements.

They are suitable for blocking cores with an internal diameter of 76.2 mm.

According to customer requirements, these shafts are available both with 3 and with 6 strips (usually are available in 3 blocking strips).

The picture illustrates an example of 3” pneumatic shafts with 6 strips, 3 for blocking and 3 for centering.

3” SPECIAL SHAFT

This is an example of a trimming collection shaft.
Casing made from highly resistant aluminium alloy.
Suitable for blocking cores with an internal diameter of 76.2 mm.
Total Shaft length 125 mm.

3 "Pneumatic Expanding Shafts: Look at the pictures