The 036.151 push collet for IEMCA bar feeders is a technical component designed for automatic bar feeding systems installed on automatic lathes, CNC lathes and CNC sliding headstock machines. The product features an M8x1 thread and a 15 mm outside diameter, making it suitable for compact configurations where the bar must be fed towards the machining area with reliable grip, correct centring and consistent movement. The collet works as the contact element between the bar feeder and the bar, holding the material and guiding it during feeding, repositioning and remnant management.

In an automatic bar feeder, the quality of the push collet has a direct effect on production stability. A correctly sized collet helps limit transmission play, small displacements, vibration and possible feeding errors that may affect the accuracy of the machined part. For this reason, the component must be selected by checking outside diameter, connection thread, feeder type, bar profile and actual working conditions on the machine. On the 036.151 model, the M8x1 thread ensures the intended connection with the IEMCA system, while the 15 mm outside diameter defines the operating size of the collet inside the pushing unit.

Push collets can be manufactured for round, hexagonal or square bars. When the material is not round, the internal geometry of the collet is ground according to the required profile and corner dimension, so that contact with the bar is improved and feeding remains regular. This is especially important in bar machining applications where the material must move without jamming, slipping or local deformation. A grip that is too weak can cause loss of position, while excessive or unsuitable grip can mark the bar or create irregular movement during feeding.

The field of use includes machine shops, automatic turning departments, serial production companies, maintenance operations on bar feeders, tooling manufacturers and technical laboratories working with machine tools. The component is intended for technicians, maintenance specialists, setters, process engineers and production managers who need to restore feeder functionality, optimise material feeding or replace a worn push collet. During installation, it is advisable to check the cleanliness of the M8x1 thread, the absence of burrs, the coaxiality of the pushing unit and the match between the bar diameter and the internal geometry of the collet.

For correct use, wear, elasticity, centring and the condition of the contact surfaces should be checked periodically. Chips, degraded oil or accidental impacts can alter grip quality and cause shape errors, geometric errors or irregular feeding. The choice of the collet must also consider feeder working height, alignment with the spindle, bar sliding conditions, machine adjustments and material characteristics. Preventive checks reduce machine downtime, improve cycle repeatability and allow the feeding system to work with higher precision in continuous industrial applications.