Elesa Launches Chamfered Pin Indexing Plungers
The GN 824 model ensures automatic locking without manual intervention for automation and logistics applications.
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Elesa has introduced a specialized new solution to its positioning elements range: the GN 824 chamfered pin indexing plungers, designed to maximize efficiency through an automatic engagement system. In mechanical applications, locking does not always take place in a perfectly aligned bore and sometimes requires automatic engagement upon contact with an edge or a groove. These new indexers meet the needs of industrial operators seeking speed and operational safety without constant manual intervention.
Automatic Engagement and 360° Orientation
Unlike standard models, the GN 824 indexing plungers feature a square-section pin with a chamfer at the tip. This geometry ensures smooth and automatic operation: when the pin comes into contact with an inclined surface or a moving profile, it retracts via internal spring compression, returning to position once the locking seat is reached. This solution is ideal for the rapid locking of carts in logistics, the instant closing of access doors in packaging, or the mechanical activation of sliding mechanisms.
One of the main technical features of the GN 824 series (available with threaded bodies from M12 to M20) is the ability to orient the chamfered pin according to the contact surface. Using a locking screw located on the collar, the operator can rotate the pin 360° after installing the plunger. A laser marking indicates the orientation of the chamfer even when the pin is retracted, facilitating blind assembly. Manufactured from hardened stainless steel for maximum wear and corrosion resistance, the pins are also available in versions with a rest position (-C and -CK series), allowing the plunger to be temporarily disengaged by a 90° rotation of the knob. Additionally, Elesa offers the GN 724.1 and GN 724.4 series for applications requiring welding or alternative actuation systems.
Additional Context: Technological Background and Market Dynamics
This section provides technological and market background not explicitly detailed in the original release.
Indexing plungers are ubiquitous in machine building for positioning and locking moving parts. Traditionally, an operator must manually pull the knob to engage or disengage the latch, which takes time and introduces a risk of error (such as forgetting to relatch a safety guard). By integrating a chamfered (beveled) pin, the indexing plunger acts like a door latch, allowing the moving component to snap and lock automatically upon simple pressure or sliding ("slam-latch"). This mechanical automation has become critical in intralogistics and modern assembly, where manual interventions must be minimized to improve ergonomics and reduce cycle times. Furthermore, the use of hardened stainless steel (such as AISI 431) for the pin is an engineering necessity: automatic engagement generates repeated impacts and friction on the chamfered face, which would cause premature wear on untreated steel, ultimately compromising the reliability and safety of the locking mechanism.
Edited by Lekshman Ramdas, Induportals editor – adapted by AI.
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