SUPERBOLT FLEXNUTS

Flexnuts have been specially developed for through-hole
applications. Their reactive design distributes the bolt load along many threads, adds
elasticity and prevents stress concentrations in the rst few threads. This helps relieve
stress concentrations and increases the fatigue life of the bolt. Since Flexnuts are
reactive nuts to be used opposite our tensioners, they are never torqued directly to achieve
preload.

SPECS FOR ALL:

• Dimension range: M20 – M160 (3/4” – 6”)
• Approx. bolt stress depending on size: 450 to 900 N/mm2 (60 to 130 ksi)
• Temperature range: -10 to 250ºC (0 to 500ºF)

ADVANTAGES:

• Ensures an equal load distribution on the thread of the bolt/stud, under load
• Adds elasticity in the joint
• Increases the fatigue life of the bolt/stud

SUPERBOLT EzFit

EzFit mechanical expansion bolts o er tremendous radial expansion
and joint clamping power in one bolting system. They are specially designed for rotating
couplings or alignment systems that require the bolts to transfer forces
in shear.

This innovative product replaces large tted or interference t
bolts, no modi cations required. The key to this solution is the split expansion sleeve that
mates with the customers’ machined holes. The split sleeve requires less
tolerance on mating parts than is traditionally required with interference t, saving
critical machining time.

EzFit mechanical expansion bolts can be designed using latest FEA
technology for any type of coupling with bolts of diameter 20mm (3/4”) or upwards. Unique
features and advantages of both hydraulic and mechanical expansion sleeve
coupling bolts can be combined to best suit your speci c requirements.

SPECS FOR ALL THREE TYPES:

• Mechanical expansion bolt for threadless bore, blind holes, and through-holes

ADVANTAGES:

• Quick and easy to install and remove – only hand tools needed
• No need for special high-powered tools and bolt deep freezing
• Saves money over alternative solutions in time and tooling
• Reusable split sleeve that springs back to original size, use after use

SUPERBOLT LOAD SENSING TENSIONER

Equipped with a strain-measuring device, the patented LST analyzes
the variation of the tensioner’s circumference in proportion to the variation in bolt
preload. Additionally, the LST o ers remote monitoring and a live reading
of data – all with an accuracy that is better than +/-5%!

BENEFITS:

• Remote preload monitoring and a live reading of data
• Facilitates more uptime during service
• Precise and repeatable preload reading
• Eliminates the need for modi cations of the bolt
• Seamless to retro t/upgrade — simply replace original nut with the LST
• Robust and reliable, IP67 classed
• Accurate preload veri cation without adjustment of clamped parts
• No alteration needed of the assembly (including stud or joint design or geometry)
• Removes risk of injuries for operators in hazardous areas
• Eliminates high costs on labor, additional measuring devices and periodic veri cation by
  maintenance

TWO OPTIONS:

• LST internal ring (Sensors mounted in the groove):
  • CY or MT version
  • Standard sizes are M36 – M100
  • Standard shaped MJT
  • Sensors covered by ring in Delrin material IP67 classed M5 connector in the
    nuthouse

TWO OPTIONS:

• LST external ring (Sensors mounted on the outer diameter):
  • – Enables the use of more readily available standard conguration multi-jackbolt
    tensioners (MJTs) (faster turnarounds can be achieved)
  • – External protective ring covers the externally mounted sensors and fully
    contains the wiring and M5 connector.

SUPERBOLT LOAD SENSING FLEXNUT

The LSF’s built-in sensors automatically measure and communicate
preload values, allowing for seamless remote monitoring; and this SMART product can be used
in conjunction with any type of tightening method (tensioning, torquing,
heating, etc.).

BENEFITS:

• Measures preload with an accuracy that is better than ±5%
• Reduces stress concentration of threads
• Easy to operate, no advanced training needed
• Both local and remote monitoring options
• Robust and reliable, IP67 classed

EXPANDER

Lug wear is a common problem with all machinery. Repairs involve a costly, time-consuming process with signi cant downtime and must be repeated several times over a machine’s life.

With the Expander System, the repair can be carried out directly in the worn mountings without welding and line boring – a permanent solution to lug wear.

WASHERS

Nord-Lock wedge-locking washers utilize tension instead of
friction in order to secure bolted joints exposed to severe vibration and dynamic loads.

ADVANTAGES:

• Quick and easy to install and remove with hand tools
• Locking function not a ected by lubrication
• High corrosion resistance
• Reliable locking, even for joints with short clamp length
• Reusable (depending on usage environment)
• Reliable operation
• Simple maintenance procedure

Over the operational life cycle, Nord-Lock washers o er increased
operational reliability and accidents and warranty claims. Nord-Lock steel washer promises
the highest corrosion resistance on the market. The washers have been
tested with at least 1,000 hours in the Neutral Salt Spray Test*, ensuring optimum
performance over time, even in the most extreme environments.

Nord-Lock Steel Washers

• Applications: General steel applications
• Size range: M3-M130 #5 TO 5
• Coating: Delta Protekt® KL100 zinc flake coating
• Bolt grades: Up to 12.9
• Temperature Range: -50°C to 200°C

Nord-Lock Stainless Steel Washers

• Applications: General steel applications
• Size range: M3-M80 #5 TO 3 1/8”
• Bolt grades: Up to A4-80
• Temperature Range: -160°C to 500°C

Nord-Lock 254 SMO® Washers

• Applications: Corrosive environment – chloride rich environments, offshore,
  pumps, heat exchangers,nuclear, food, medical, processing
• Size range: M3-M39 #5 TO 1 1/2”
• Bolt grades: Up to A4-80
• Temperature Range: -160°C to 500°C

Nord-Lock Alloy 718 Washers

• Applications: Acidic environment –
  chemical industry, evaporators,
  offshore, downhole tooling
• Size range: M4-M20 #8 TO 1 1/2”
• Temperature Range: -160°C to 500°C

Nord-Lock Alloy 718 Washers

• Applications: High temperatures –
  gas turbines, turbo charges, incinerators
• Size range: M4-M20 #5 TO 1 1/2”
• Temperature Range: -160°C to 700°C

HYDRAULIC NUTS

Hydraulic nuts enable large diameter bolts to be tensioned with
ease to high and accurate preloads. A hydraulic pump activates the internal jacking system,
so the e ort required to tighten a very large diameter bolt is reduced
to the e ort needed to operate the pump.

As there is no nut rotation during tightening, the operation can
be performed in a conned space and torsional stresses on thread damage are eliminated. Any
number of hydraulic nuts can be connected together for simultaneous operation,
ensuring all bolts in the joint can be evenly loaded to the same high and accurate preload.

FEATURES:

• Available as bottom collar, top collar, and shim type
• Standard 1500bar and 2500bar designs
• A20/A15 range
• Substitutes original nut – combines tensioner and permanent nut
• All in one solution – nut remains in place post tensioning
• Special designs available
• Supplied up to M400 in size (to date) – larger sizes quoted
• High temperature solutions available

ADVANTAGES:

• Quick and easy to install
• Even and accurate load as it is developed hydraulically
• No torque or torsion stress
• No ogging hammers or spanners
• Self-aligning (shim)
• Improved fatigue performance
• 100% simultaneous tension
• Long life of internal jack -very compact and cost e ective
• Less stud protrusion required than for tensioners

TWO OPTIONS:

• LST internal ring (Sensors mounted in the groove):
  • – CY or MT version
  • – Standard sizes are M36 – M100
  • – Standard shaped MJT
  • – Sensors covered by ring in Delrin material IP67 classed M5 connector in the
    nuthouse

TWO OPTIONS:

• LST external ring (Sensors mounted on the outer diameter):