NSK-SAdvantages

1. Lifecycle-Oriented Preload Stability

• Stabilization of the preload force throughout all phases of the bolted joint
  (Assembly → Embedding → Relaxation → Operation)
• Reduction of settlement, creeping, and relaxation losses
• Prevention of critical preload losses
• Ensuring the required clamping force throughout the service life
• Expansion of the safety concept from pure anti-loosening protection to systemic preload stability

2. Multifunctional system safety without conflicting objectives

• Multifunctionality as the central operating principle: Combining anti-loosening and anti-rotation protection in a single system
• Simultaneous force-locking, form-locking, and friction-locking effects
• Resolution of the trade-off in conventional locking systems
• Integration of multiple mechanisms of action instead of focusing on individual principles

3. Increased slip resistance and operational safety

• Increase in the usable friction reserve
• Increased protection against slip and opening
• Improved force distribution within the joint
• Stabilization of overall mechanical function
• Support for system function, not just securing against relative rotational movement

4. System compliance and load distribution

• Increased resilience of the bolting system
• Improved load distribution between the screw and clamping components
• Optimized pressure distribution through radial geometry with two contact points
• Reduction of screw load
• Protective effect during brief periods of overloading through elastic energy absorption
• Active system support instead of purely passive locking action

5. Ideal for use in bolted joints with low property classes

• Defined friction conditions for reproducible assembly and preload ratios
• Adapted spring characteristics to stabilize the preload force despite reduced screw strength
• Enables the use of lower property classes, such as 5.6, in suitable applications
• Reduction in material, weight, and system costs through optimized screw usage
• Maintenance of joint security and functional stability despite a more cost-effective design

6. Functional reliability under real-world operating conditions

• Proven resistance to loosening under dynamic transverse loads
  (DIN 65151)
• Effectiveness during embedding, creeping, and relaxation processes
• Resistance to vibrations and alternating loads
• Stabilization even at reduced preload levels
• Comprehensive performance across real-world operating conditions

7. Assembly and process reliability

• One-piece system → no loss of parts / no mix-ups
• Simple and safe assembly
• Reduction of assembly errors
• High process reliability in series production and maintenance
• System integration reduces interfaces and sources of error

8. Cost-Effectiveness and System Integration

• Reduction in Total Cost of Ownership
• Reduction in maintenance and servicing costs
• Minimization of downtime risks
• Potential for weight and component optimization
• Multifunctionality reduces the number of components and system complexity