SARAMAX is a mechanical clamping which makes it possible to produce high wear
resistant combirolls for conventional intermediate stands of wire and bar mills
or for finishing stands of rod and bar mills.

The lateral clamping force induces an axial compression stress in the SARAMANT, SARACOM or SARAMET roll rings which are mounted on the shaft.
When transmitting higher rolling torques,the lateral friction forces is supported by keyways and wedges on the lateral face or inside the rings or by additionally hot shrinking of the
rings on the shaft.

Manufacturing
The clamping system SARAMAX consists of a tough roll shaft and a locking device allowing
to fix the wear resistant roll rings.

Considering the sizes of the stands, the
rolling forces, the rolling speeds, the roll
stock and the groove profiles, Saar-Hartmetall und Werkzeuge GmbH makes the following recommendations, in agreement with the
rollers concerning::

• the roll shaft material: for single strand rolling and rolling forces below 20 t, sheriodical or cast iron roll shafts
  should be used, for multiple strand rolling and rolling forces above 20 t, forged steel shafts are a better choice.
  
• the transmission of the rolling torque: for round grooves up to 20 mm and
  oval grooves with a width of up to
  32 mm, axial clamping with lateral
  friction is sufficient. Round grooves
  from 20 - 30 mm and ovals from
  32 - 44 mm require a lateral friction
  force together with lateral round or 10-15 mm deep wedges in the roll rings.
  Roll rings with bigger grooves are mounted using the lateral friction
  force and large keyways and wedges
  in the steel part of the SARACOM or SARAMET rings.
  
• the material of the roll rings:
  SARAMET rings should be used at
  rolling speeds from 0,2-15 m/sec, SARAMANT or SARACOM roll rings
  with a hardness of 600-700 HV30 are mounted for speeds from 2-15 m/sec and with a hardness of 700 - 800 HV30 for speeds from 4-30 m/sec.

The roll shafts are supplied in a rough turned condition by the customer or they are fully machined by Saar-Hartmetall und Werkzeuge GmbH. After the grinding of the roll ring seat
area on the shaft and the manufacturing of all
the necessary locking devices, the SARAMAX clamping system is mounted.
The grooves are machined either on our customers´lathes or they are ground or turned
to tight round tolerances with our own machine park.