Tensioners

Superbolt was the world’s first to revolutionize nuts and bolts with multi-jackbolt tensioning technology. Since then, our technology has been proven in tens of thousands of successful installations and we continue to develop a multitude of solutions to solve the next generation of bolting challenges.

Multi-Jackbolt Tensioners

Superbolt tensioners offer you simple and cost-effective tightening of large size bolts. Your joints can be tightened with high accuracy without requiring specialized skills or heavy tooling.

A wide range of tensioners is available in the standard series, as well as an unlimited capacity to create special designs to meet your unique needs.

 

The standard series includes nut-style and bolt-style tensioners.

Tensioner type Specifications
GT
Standard nut tensioner
  • Dimension range: M16 - M160 (3/4″ – 6″)
  • Approx. bolt stress depending on size: 400 to 1000 N/mm2 (60 to 145 ksi)
  • Temperature range: -40 to 250ºC (-50 to 500ºF)

GTS
Super high-strength nut tensioner

  • Dimension range: M16 - M100 (3/4″ – 4″)
  • Approx. bolt stress depending on size: 400 to 1200 N/mm2 (60 to 175 ksi)
  • Temperature range: -40 to 250ºC (-50 to 500ºF)
MT
Standard nut tensioner
  • Dimension range: M16 - M160 (3/4″ – 6″)
  • Approx. bolt stress depending on size: 450 to 700 N/mm2 (60 to 100 ksi)
  • Temperature range: -10 to 250ºC (0 to 500ºF)
CY
High-strength nut tensioner
  • Dimension range: M16 - M160 (3/4″ - 6″)
  • Approx. bolt stress depending on size: 500 to 900 N/mm2 (70 to 130 ksi)
  • Temperature range: -40 to 250ºC (-50 to 500ºF)
H650
Medium-temperature nut tensioner
  • Dimension range: M20 - M125 (3/4″ - 5″)
  • Approx. bolt stress depending on size: 310 N/mm2 (45 ksi)
  • Temperature range: up to 350ºC (up to 650ºF)
H650T
Medium nut temperature, tall tensioner
  • Dimension range: M24 - M100 (1” - 4”)
  • Approx. bolt stress depending on size: 310 N/mm2 (45 ksi)
  • Temperature range: up to 350ºC (up to 650ºF)
SJ
Compact nut tensioner
  • Dimension range: M20 - M160 (3/4″ - 6″)
  • Approx. bolt stress depending on size: 250 to 400 N/mm2 (35 to 60 ksi)
  • Temperature range: -10 to 250ºC (0 to 500ºF)
SB8
Standard bolt tensioner
  • Dimension range: M16 - M160 (3/4″ - 6″)
  • Approx. bolt stress depending on size: 400 to 650 N/mm2 (60 to 95 ksi)
  • Temperature range: -10 to 250ºC (0 to 500ºF)
SB12
High-strength bolt tensioner
  • Dimension range: M20 - M90 (3/4″ - 3-1/2″)
  • Approx. bolt stress depending on size: 500 to 850 N/mm2 (70 to 125 ksi)
  • Temperature range: -10 to 250ºC (0 to 500ºF) – lower temperatures on demand

 

Bolting Made Simple

Superbolt multi-jackbolt tensioners take high preload requirements and break them down into manageable torques using the jackbolts threaded through the nut body. They remain easy to install, even on larger sizes, compared to standard hex bolts.

 

Advantages

  • Quick and easy installation and removal
  • Only hand tools required
  • Safe method for installation
  • Fits in restricted areas
  • Profitable life-cycle cost
  • Reliable operation
  • Simple maintenance procedure

 

Testing & Certification

Superbolt products have been rigorously tested and approved by independent institutes as well as certification authorities.

Customer success stories

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