The 034.020 feed finger collet for LNS - TRYTON bar feeder is a technical component designed for bar feeding systems installed on automatic lathes, CNC lathes and sliding headstock CNC machines. Its main function is to hold and guide the bar during the feeding movement toward the machining area, maintaining a stable grip according to the diameter or profile of the material being processed. The product is defined by an M10 thread and a 20 mm outside diameter, which determine its installation on the corresponding pusher unit and its compatibility with the bar feeder equipment.

During bar machining, the feed finger collet works as the connection element between the automatic bar feeder and the material. It is mounted on the pushing unit and allows the bar to advance in a controlled way, reducing abnormal movement, vibration and misalignment that could affect the quality of the finished part. In repetitive turning, serial production and machining of small and medium diameter parts, the correct choice of the collet contributes to production continuity, feeding stability and a reduction in manual operator intervention.

The collet can be supplied for round, hexagonal or square bars. For hexagonal or square profiles, grinding is carried out according to the corner dimension, in order to obtain the correct fit with the real profile of the bar. This is important to avoid excessive play, uneven clamping or feeding difficulties. For best results, it is recommended to check the nominal bar diameter, material tolerance, profile shape, condition of the bar feeder and compatibility of the M10 thread with the mounting unit.

From a technical point of view, the feed finger collet must provide enough grip to pull or push the material without deforming it and without interfering with the bar feeder operation. A correctly sized collet helps control transmission play, minor alignment errors and dimensional variations of the bar, improving feeding regularity. When bars are not perfectly straight, have irregular surfaces or profiles with wide tolerances, the internal size of the collet and the condition of the guide elements of the feeder should be carefully evaluated.

This product is suitable for machine shops, production departments, bar machining companies, machine builders, maintenance technicians and professionals responsible for the efficiency of automatic bar feeders. It is used in preventive maintenance, replacement of worn components, recovery of feeding accuracy and optimization of size changeovers. Having the correct collet for the material being machined helps reduce machine downtime, scrap and gripping problems, especially in continuous production on automatic and sliding headstock CNC lathes.

Before installation, the seat should be cleaned carefully, the thread checked, burrs or metal residues removed and the alignment between the collet and the feed pusher unit verified. Incorrect adjustment or a collet that does not match the bar may cause instability, marks on the material, irregular feeding or difficulty in ejecting the remnant. For this reason, collet selection must consider not only the bar feeder model, but also the bar type, actual dimension, profile, working conditions and precision requirements of the production process.