Onsrud 66-908ALTIN Diamond Pattern Router Bit Altin

Product Description

The ONSRUD 66-908ALTIN is a solid carbide diamond pattern router bit designed for high-performance cutting in composite materials on CNC machines. It features a 3/16 inch (0.1875 inch) cutter diameter, a 5/8 inch (0.6250 inch) length of cut, and a drill point end type that allows plunge entry into workpieces. The AlTiN (Aluminum Titanium Nitride) coating extends tool life by reducing heat buildup and wear during aggressive composite cutting cycles. The right-hand cutting direction suits standard CNC spindle rotation, and the 1/4 inch shank fits common CNC collet systems without adapters.

This bit is built for composite material applications including fiberglass, carbon fiber, G10, and similar laminates typically routed on CNC machining centers in aerospace, industrial, and fabrication environments. The diamond pattern geometry helps manage chip evacuation and reduces delamination at cut edges, which is a common concern when routing layered composite panels. The 1-3/8 inch shank length provides adequate grip depth in standard ER or straight-bore collets, and the 2 inch overall length keeps the tool compact for rigid, chatter-free cuts in production setups.

Key Features

• Solid carbide construction for rigidity and long tool life in abrasive composite materials
• AlTiN coating reduces friction and heat, extending usable tool life in high-speed CNC cycles
• Drill point end type allows direct plunge entry without pre-drilling
• Diamond pattern geometry promotes clean cuts and reduced delamination in composite laminates
• Right-hand cutting direction compatible with standard CNC spindle rotation
• 1/4 inch shank fits common ER16 and ER20 collet systems

Compatibility

Designed for use on CNC machines with a 1/4 inch collet; intended for routing composite materials as part of the ONSRUD 66-900 series.

Installation Notes

Installation should be performed by a qualified CNC machinist or tooling technician. Power down and lock out the CNC spindle before changing tooling. Insert the shank fully into the collet to the recommended grip depth and torque the collet nut to the machine manufacturer's specification using the correct collet wrench. Verify runout with a dial indicator before beginning production cuts, as excessive runout accelerates wear on carbide tooling.