Walter-titex 5062859 Cobalt Micro Drill Bit Wire 87

Product Description

The WALTER-TITEX 5062859 is a cobalt micro drill bit engineered for precision drilling in demanding materials at extremely small diameters. Built to DIN 1899 standards, it carries a 0.0098 inch (wire size 87) cutting diameter with a 118-degree standard point angle and a web-thinned, tapered web configuration that reduces entry force and improves chip evacuation. The M35 cobalt steel construction provides heat resistance suitable for tough alloys. The bright, uncoated finish keeps tolerances tight, with a diameter tolerance of +0.000 to -0.004 mm. This bit is sold individually and requires a minimum order of 10 units.

This micro drill bit is intended for blind hole, stack drilling, and through hole applications in titanium alloys as the primary workpiece material, with secondary suitability for glass and graphite. The overall length of 25 mm and a 1.00 mm straight-cylindrical shank make it compatible with standard high-precision collet chucks and micro drilling spindles used in aerospace, medical device, and precision machining environments. The 5xD flute-to-diameter ratio and 1.90 mm flute length are sized for shallow, controlled cuts at this diameter range.

Key Features

• M35 cobalt construction resists heat buildup when drilling titanium alloys and abrasive materials
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust and cleaner entry
• Wire size 87 cutting diameter (0.0098 inch) with tight tolerance of +0.000 to -0.004 mm
• Spiral flute, right-hand cut for consistent chip removal in micro drilling operations
• Bright uncoated finish maintains dimensional accuracy at this sub-0.01 inch diameter
• Meets DIN 1899 specification for micro twist drills

Compatibility

Suited for blind hole, stack drilling, and through hole drilling in titanium alloy, glass, and graphite workpieces. Compatible with precision collet chucks accepting a 1.00 mm straight-cylindrical shank. Part of the WALTER-TITEX Series A3143 micro drill line.

Installation Notes

Micro drill bits at this diameter are installed and operated by machinists or tooling technicians using high-speed precision spindles or CNC machining centers with appropriate collet toolholders. Spindle runout should be verified and minimized before use, as any deviation at this diameter range can cause immediate tool breakage. Ensure workpiece clamping is secure and drilling depth does not exceed the maximum of 1.40 mm to prevent deflection or breakage. Do not exceed manufacturer-recommended feed and speed parameters for the target workpiece material.