A new single-point concentricity extrusion crosshead from Guill Tool & Engineering uses micro-fine screws for precise concentricity adjustment. Precision achieves 0.008 inches or finer per revolution.

The single-point concentricity adjustment is a unique Guill innovation for the extrusion of thin-walled jacketing and precision ID/OD tubing, said the company in making the announcement. One bolt controls 360° of adjustment.

Features of the single-point crosshead include a patented cam-lock deflector for quick changeovers, one-minute residence time at 0.5 lb/hr material flow, optimized usage with extruders measuring ½ and ¾ in., and a maximum die ID of 0.250 in. 

The crosshead is also flexible, accepting both vacuum and micro-air accessories but also suited for pressure and sleeving applications. Fluoropolymer designs are available upon request.