SUPERBOLT® Jamnut Tensioners

Extra Heavy Range

Technical Data
  • material: alloy steel
  • temperatures:
    –10 to +250 °C
  • max. values valid for permanent bolting applications, incl. reaction forces
  • jackbolts lubricated with JL-M

 Data sheet
General Description

SUPERBOLT® Jamnut Tensioners of the SJX series are used for applications where in spite of room restrictions a high pre-load is required. They replace normal quality 8 hex nuts and do not require more space than same.

Due to the multi jackbolt system they are much easier to tighten and much safer against loss of pre-tension.
Applications:

Hydraulic cylinders, shaft mounts, piston connections, foundations, etc.

Available upon request:

  • inch threads (UN and Whit)
  • D > M160
  • other sizes and specials
  • anti-corrosion protection
  • special materials
  • captive mounted jackbolts
SUPERBOLT® products are protected by one or several patents (US patents: RE 33490; 4,846,614; 5,083,889; 6,199,453; 6,381,827; 6,112,396; 6,263,764) and corresponding foreign patents, other patents pending. SUPERBOLT® products are also covered by trademark rights.