The 034.007 bar feeder pusher collet for LNS - TRYTON bar loaders is a technical component designed for bar feeding systems installed on automatic lathes, CNC lathes, sliding headstock lathes and continuous production machines. This model is defined by an M4 thread and 7 mm outside diameter and is intended to connect to the pusher unit of the bar loader, allowing the material to be advanced toward the machining area of the machine tool. In bar production, the pusher collet works directly on the raw bar: it must hold the material, guide it during feeding and contribute to correct management of the remaining bar end, while maintaining stability and repeatability throughout the cycle.

The function of the pusher collet is especially important when machining small-diameter bars, where even a minimal gripping error, misalignment or incorrect setting can generate slipping, vibration, irregular feed, marks on the material or machine stoppages. The collet geometry, 7 mm outside diameter, M4 thread and compatibility with the LNS - TRYTON bar loader must be checked carefully by the technician before installation, verifying the condition of the guide tube, the alignment of the pusher assembly, the cleanliness of the seat and the match with the diameter and profile of the bar being machined.

Bar feeder pusher collets can be supplied for round, hexagonal or square bars. For hexagonal or square profiles, the internal profile is ground according to the corner dimension, in order to obtain correct grip on the material and more regular feeding. This feature is essential in the production of small precision turned parts, automotive components, fittings, bushings, pins, special screws, technical fasteners and components produced on sliding headstock lathes. A correctly sized pusher collet improves cycle continuity, reduces adjustment downtime and maintains more consistent feeding from one bar to the next.

During installation it is recommended to check that the M4 thread is undamaged, that the collet body shows no deformation, burrs, cracks or wear, and that gripping on the bar takes place without excessive forcing. A collet that is too tight can mark the bar or create abnormal friction in the feeding system, while a collet that is too open may not provide reliable pulling and pushing action. The technician should also check bar loader transmission play, bar axis height in relation to the spindle, coaxiality with the guide channel and the absence of form or geometry errors that could affect the accuracy of the production cycle.

In practical use, the pusher collet must operate together with a correctly adjusted bar loader and guides suitable for the bar diameter. Periodic cleaning is important because chips, oil, machining residues and metal dust can alter grip, create small jams or reduce the repeatability of the feed movement. In departments with intensive production, it is good practice to periodically check the elastic capacity of the collet, thread stability, contact with the bar and any localized wear. These inspections help prevent machine downtime, dimensional scrap and problems during the discharge of the bar remnant.

The pusher collet for LNS - TRYTON bar loaders is suitable for mechanical companies, turning shops, machine builders, maintenance technicians, production technicians, process engineers, quality control departments and technical laboratories that need to keep the lathe feeding system efficient. When selecting the correct model, it is necessary to consider outside diameter, thread, bar loader type, bar diameter, profile shape, material being machined and operating conditions. A correct match between collet, bar loader and bar improves feeding safety, production continuity and reduction of anomalies linked to material handling.