Posted to News on 21st Jul 2026, 09:00
Elesa launches indexing plungers with chamfered pin for automatic snap-in locking
Elesa introduces a new dedicated solution within its range of positioning elements: indexing plungers with a chamfered pin, designed to maximise efficiency through an automatic snap-in engagement system.
In mechanical applications, locking does not always occur in a perfectly aligned hole. In some cases, the component must engage automatically when meeting an edge or a groove. To address this requirement, Elesa offers indexing plungers with chamfered pin - components designed for users seeking operational speed and safety without the need for constant manual intervention.
Unlike standard models, GN 824 indexing plungers feature a square-section pin with a chamfered lead-in. This geometry enables smooth and automatic operation: when the pin comes into contact with an inclined surface or a moving profile, it retracts by compressing the internal spring and then snaps back into position once the locking seat is reached.
This automatic engagement solution is suitable for a wide range of industrial applications. In logistics, for example, it ensures fast and secure locking of frames and transport trolleys during handling. In packaging and automation, it allows guards and access doors to close with a snap action, without manual intervention. It is equally effective in sliding mechanisms, where the locking function is activated mechanically through the simple movement of the component, improving both positioning accuracy and operating efficiency.
360 degree orientation for precise installation
One of the key technical features of the GN 824 series (with threaded body from M12 to M20) is the ability to orient the chamfered pin according to the contact surface. Thanks to a set screw positioned on the locking ring, the operator can rotate the pin by 360 degrees after installing the plunger.
A laser marking on the ring indicates the orientation of the chamfer even when the pin is retracted, ensuring precise installation even in blind mounting positions.
To ensure maximum reliability under mechanical stress, the pins are made of hardened stainless steel, providing excellent wear resistance and corrosion protection.
Elesa also offers a range of configurations to meet different design requirements: versions with rest position (-C and -CK) - ideal where the plunger needs to be temporarily disengaged by rotating the knob by 90 degrees.
For applications requiring welding or alternative actuation systems such as pull rings, or for heavy-duty constructions, Elesa offers the Series GN 724.1 and GN 724.4.
