NORD-LOCK is a superior bolt securing system that provides safe locking for bolted joints even when exposed to severe vibration and dynamic load.
NORD-LOCK is a pair of washers with a wedge-locking action meeting DIN 25201 which is a unique method using tension instead of friction. The washers are installed in pairs, cam face to cam face. There are radial teeth on the opposite sides to grip the bolt and the mating material. The rise of the cams between the NORD-LOCK washers is greater than the pitch of the bolt. Any attempt from the bolt/nut to rotate loose is blocked by the wedge effect of the cams.
Nord-Lock will help you optimize your bolted joints in order to minimize overall cost and maximize safety. Contact us to request free samples to test on your own equipment, or take advantage of our dynamic joint testing laboratory. This facility includes a complete set up for torque-load and vibration testing with adjustable frequency, amplitude and clamping length.
The NORD-LOCK bolt securing system uses geometry to safely lock bolted joints in the most critical applications. This unique wedge-locking system offers the following advantages:
• Maximum safety
• Resists loosening caused by vibration and dynamic loads
• Ease of assembly and disassembly
• Locking function unaffected by lubrication
• Positive locking at low and high preload levels
• Controllable preload
• Same temperature characteristics as standard bolt/nut