Tool Resource / Category name
Q:
What is a Camlock washer?
I've heard of an alternative to loctite in threadlocking applications...what is it?
A:
CAM LOCKING WASHERS
Exceptional Value
Cam locking washers offer a safe bolt locking system that does not rely on traditional techniques to secure the fastener. This system utilizes tension instead of friction to secure bolted joints. The proven wedge-locking method, meeting DIN 25201, is superior to any traditional method.
The cam locking bolt securing system incorporates a pair of washers that have cam faces on one side with a cam angle “a” greater than the thread angle “B”. In addition, there are radial teeth on the opposite side. The pre-assembled washers are installed in pairs, cam face to cam face.
When the bolt and/or nut is tightened the teeth of the cam lock washers grip and lock the mating surfaces allowing movement only across the cam faces. Any rotation of the bolt/nut is blocked by the wedge effect of the cams.
Advantages
- Prevents loosening caused by vibration and dynamic loads
- Ease of assembly and disassembly
- Locking function not affected by lubrication
- No special tools required
- Controllable preload
- Same temperature characteristics as bolt/nut of corresponding quality
- Re-usable
Significant Range and Variety
- Steel, zinc flake coated with Delta Protekt M3 - M130
- Stainless steel (A4), M3 – M80
- Special alloys for high temperatures or highly corrosive environments (upon request)
Assembly Examples
Cam-locking washers can be used with standard and high grade bolts and are available with enlarged outer diameter for use on slotted holes, soft materials or painted surfaces.
Cam-locking washers for tapped holes
- Cam-locking washers are sized for counter-bored holes.
- Through holes require two pairs of cam-locking washers.
- For stud bolts cam-locking washers lock the nut, and eliminate the need for adhesives.
- Cam-locking washers must not be used on washers that are not captivated in place.
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