The 036.070 bar pusher collet for IEMCA bar feeders is a professional component designed for automatic bar feeding systems installed on automatic lathes, CNC lathes and sliding headstock CNC machines. The product is identified by an M5X0.5 thread and a 7.5mm outside diameter, dimensions that must be carefully checked against the bar feeder model, the pusher assembly and the bar diameter being machined. The function of the bar pusher collet is to engage and support the material during feeding, helping to maintain machining continuity and correct bar supply towards the working area.

In a bar production line, the pusher collet works as the connection element between the feeder drive system and the raw material. Its purpose is not to clamp the workpiece during cutting like a spindle collet, but to guide the bar in a stable and controlled way, reducing unwanted movement, misalignment, transmission play and possible vibration that may affect cycle repeatability. A correctly sized collet helps maintain the axial position of the bar, supports automatic feeding and makes the pushing phase more predictable during repetitive machining operations.

This component is suitable for mechanical production departments, turning workshops, companies producing serial parts, machine tool builders and maintenance technicians, laboratory technicians and quality control personnel who need consistency between tooling, bar feeder and material. The choice of the collet must consider the connection thread, outside diameter, required internal diameter, bar geometry and the specific profile to be machined. The collets can be supplied for round, hexagonal or square bars; for shaped profiles, grinding is carried out according to the across-corners dimension, in order to obtain a coherent fit with the real material section.

During installation it is advisable to check the cleanliness of the seat, the absence of chips, burrs or coolant residues and the correct condition of the M5X0.5 thread. A dirty or damaged connection may generate shape errors, apparent eccentricity, irregular dragging or feeding difficulties. Before starting production, the operator should verify that the bar slides without sticking, that the feeder height is correctly aligned with the machine axis and that no abnormal play is present in the pushing system. These checks are especially important on sliding headstock machines, where material stability and feeding accuracy directly influence the quality of the finished part.

For correct use, it is always useful to compare the collet dimensions with the IEMCA feeder configuration and with the real condition of the bar. Out-of-tolerance, oval, bent or uneven-edged bars can cause inconsistent gripping and irregular feeding. In high-repeatability machining, small diameters or long automatic cycles, periodic inspection of collet wear helps prevent machine downtime, feeding errors and production rejects. The TD-036070 bar pusher collet is therefore a technical solution for users looking for a precise, controllable spare part suitable for industrial environments where reliable bar feeding is essential for lathe productivity.