Walter-titex 5062880 Cobalt Micro Drill Bit Wire 77

Product Description

The WALTER-TITEX 5062880 is a cobalt micro drill bit engineered for precision drilling in demanding materials. Built to DIN 1899 standards, it carries a wire gauge size of 77, which equals 0.0181 inches in decimal, and features a 118-degree standard point angle with web thinning for improved centering and reduced thrust. The M35 cobalt steel construction provides heat resistance and edge retention when cutting titanium alloys and other hard-to-machine materials. With a 25 mm overall length and a straight-cylindrical shank diameter of 1.00 mm, this bit is sized for micro-drilling applications where precision tolerances are critical. Installed by machinists, tool and die technicians, and precision fabricators.

This bit is designed for blind hole, stack drilling, and through hole drilling operations. The spiral flute configuration with a 5xD flute-to-diameter ratio promotes chip evacuation in deep cuts. Maximum drilling depth is 2.20 mm. Secondary workpiece suitability includes glass and graphite in addition to the primary titanium alloy application. The bright, uncoated finish is appropriate for applications where coating buildup or contamination is a concern. Right-hand cut geometry suits standard CNC and manual drilling setups.

Key Features

• Wire size 77 (0.0181 inches decimal) for micro-precision bore work
• M35 cobalt construction resists heat and wear in titanium alloy cutting
• 118-degree standard point with web thinning reduces entry thrust and improves bit centering
• Spiral flute with tapered web configuration supports chip clearing in blind and through holes
• Straight-cylindrical shank with 1.00 mm diameter for compatible chuck and collet fitment
• Conforms to DIN 1899 specification for consistent dimensional accuracy
• Bright, uncoated finish suitable for general-purpose and contamination-sensitive applications

Compatibility

Designed for use in precision drilling applications involving titanium alloy as the primary workpiece material, with secondary suitability for glass and graphite. Applicable material codes include K, N, P, S (primary) and M, O (secondary) per standard material classification. Fits chucks and collets accepting a 1.00 mm straight-cylindrical shank.

Installation Notes

This micro drill bit should be installed in a collet or chuck rated for the 1.00 mm shank diameter to prevent runout and bit breakage. Verify spindle speed and feed rate are appropriate for the workpiece material before drilling, as micro bits are highly sensitive to improper parameters. Secure the workpiece firmly to prevent movement during stack or through-hole operations. Inspect the cutting edge for wear before each use, as cobalt micro bits can fracture if used past their service life.