Onsrud 66-939ALTIN Diamond Pattern Router Bit Altin

Product Description

The ONSRUD 66-939ALTIN is a diamond pattern router bit designed for high-performance cutting in composite materials on CNC machines. Built from solid carbide and finished with an AlTiN (aluminum titanium nitride) coating, this end mill delivers extended tool life and heat resistance in demanding production environments. The bit features a 0.5-inch cutter diameter, a 1.625-inch length of cut, and a 1/2-inch shank diameter, making it a compact but capable tool for precision routing operations. It runs in a right-hand cutting direction and is engineered to reduce delamination and fraying common when machining composite panels and laminates.

This router bit is suited for CNC routing applications involving composite materials such as fiberglass, carbon fiber, phenolic, and similar engineered panels. With a 2.375-inch shank length and 4-inch overall length, it provides stable tool engagement and reduced vibration at speed. The diamond pattern geometry helps evacuate chips efficiently and maintain clean edge quality on composite substrates. It is appropriate for use in production shops, fabrication facilities, and aerospace or industrial component manufacturing where composite cutting is routine.

Key Features

• Solid carbide construction for rigidity and wear resistance in abrasive composite materials
• AlTiN coating extends tool life by reducing heat buildup during high-speed CNC operation
• Diamond pattern geometry promotes clean cuts and efficient chip evacuation in composites
• Right-hand cutting direction compatible with standard CNC router spindle configurations
• 1/2-inch shank diameter fits common CNC router collet sizes
• Part of the ONSRUD 66-900 series, designed specifically for composite material routing

Compatibility

Designed for use in CNC machines with a 1/2-inch collet. Optimized for composite material applications per ONSRUD 66-900 series specifications.

Installation Notes

Installation should be performed by a qualified CNC operator or machinist. Ensure the machine spindle is fully powered down and locked out before changing tooling. Insert the shank fully into the collet and tighten to the machine manufacturer's specified torque using the appropriate collet wrench. Verify runout and tool projection before initiating a cutting program, as improper seating can cause premature tool wear or workpiece damage.