SUPERBOLT® Armored Machinery Tensioners

for dynamic application

Technical Data
  • Material: alloyed steel
  • Temperatures:
    –10 up to +250 °C
  • max. values valid for permanent bolting applications, incl. reaction forces
  • Jackbolts lubricatied with JL-AS

 Data sheet
General Description

SUPERBOLT® Armored Machinery Tensioners of the MRA series meet the special requirements of high speed rotating machinery. The jackbolts are recessed into the nut body to protect them mechanically from damage and to reduce noise. The jackbolts are captively mounted within the tensioner body and under no circumstances can they become free and cause damage.
Applications:

Bolted joints on high-speed machinery such as mining equipment, crushers, cutter blocks etc.

Available upon request:

  • Inch threads (UN and Whit)
  • Other sizes and specials
  • Anti-corrosion protection
  • Special materials
  • Material certificates
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.