How do you make sure every bolt stays locked on a 950 metre ride at high speed? 🤔
At Thundercoaster, safety is our number one priority! With the Nord-Lock Washer, every bolt connection remains secure even under extreme vibration and dynamic loads.
This locking technology ensures no loosening, maintaining the ride's performance and safety through every twist and turn.
🔩 Proven safety, lasting performance!
HOW IT WORKS
Nord-Lock wedge-locking technology secures bolted joints with tension instead of friction. The system is composed of a pair of wedge-locking washers with cams on one side and serrations on the other. The pair of washers use cam-geometry to efficiently prevent the bolt from loosening.
TIGHTENING
When the bolt and/or nut is tightened, the serrations grip and seat the mating surfaces. The Nord-Lock wedge-locking washer is locked in place, allowing movement only across the face of the cams.
Since the cam angle α, is larger than the thread pitch β, a wedge effect is created by the cams, preventing the bolt from rotating loose. Any attempt from the bolt/nut to rotate loose is blocked by the wedge effect of the cams.
UNTIGHTENING
When the bolt and/or nut is tightened, the serrations grip and seat the mating surfaces. The Nord-Lock wedge-locking washer is locked in place, allowing movement only across the face of the cams.
Since the cam angle α, is larger than the thread pitch β, a wedge effect is created by the cams, preventing the bolt from rotating loose. Any attempt from the bolt/nut to rotate loose is blocked by the wedge effect of the cams.
Specifications
Standard range bolt sizes M3 - M130
SP washers with enlarged outer diameter
Steel construction washers for steel constructions applications
Five different materials - steel, stainless steel, 254 SMO, alloy 718 and alloy C-276
Secure bolts reliably at high and low clamp loads
