Modular reamer system features disposable heads

THE latest Precimaster™ Plus modular reamer system builds on the success of SECO’s original Precimaster by featuring a new high-precision connection, solid-carbide disposable heads as well as common holders for blind and through-hole applications. These enhancements boost reaming speed, stability and versatility for more precise, cost-effective hole production, with size tolerances held to between 15 and 25 microns and surface finishes of Ra. 4 to Ra. 8.

The system’s patented connection ensures reamer head exchanges are fast and easy with repositioning repeatability and runout of under three microns. A special three-vertical-drive-pin design enables the connection to easily handle extremely high levels of transmissible driving torque. Internal axial clamping forces draw the reamer heads up into the system shanks, creating a strong, secure interface.

Precimaster Plus uses solid-carbide disposable heads in diameters that range from 10 mm to 60 mm and mount to four standard shank sizes. Shank lengths are available in short, medium and long options to accommodate restricted clearance situations, common hole depths and up to 10 x D, respectively.

The design of the reamer shanks allows for different types of flushing for both blind and through holes. Tool body coolant outlets in the front force the chips up along the head flutes and out the blind holes, while standard through-tool coolant blasts the chips forward and away from the tool for efficient through-hole reaming.

Other features, such as the three lead geometries for universal, aggressive feed and fine finish operations as well as five reamer head grades, ensure optimized performance in all workpiece materials.