Sumitomo 5UHY106 Carbide Screw Machine Drill Bit 0.4921 in

Product Description

The SUMITOMO 5UHY106 is a solid carbide screw machine length drill bit designed for high-precision hole-making in ferrous workpiece materials. Built on the MDW-GS series platform, it features a 135-degree drill point angle and a tapered web configuration that reduces thrust and improves chip evacuation. The bit measures 12.50 mm (0.4921 inches) in diameter with an overall length of 100.00 mm (3.9370 inches) and a maximum drilling depth of 28.25 mm (1.1122 inches). The straight-cylindrical shank seats securely in standard drill chucks or collet holders. This bit is suited for production machining environments where dimensional accuracy and tool life are critical priorities.

The 5UHY106 is intended for drilling cast iron and steel in both manual and CNC machining setups. The screw machine length format - shorter than jobber-length bits - provides added rigidity and reduced deflection, making it well suited for high-feed drilling cycles on machining centers, drill presses, and turret lathes. The two-flute geometry at a 2xD flute-to-diameter ratio supports efficient chip removal in interrupted cuts and through-hole applications. Machinists and tool-and-die professionals working in job shops or production facilities will find this bit appropriate for short-run and high-volume drilling operations alike.

Key Features

• Solid carbide construction for extended tool life in ferrous materials
• 135-degree drill point angle reduces entry thrust and walking tendency
• Tapered web configuration improves chip flow and reduces heat buildup
• Straight-cylindrical shank with h8 diameter tolerance for precise chuck or collet seating
• Screw machine length provides greater rigidity versus jobber-length alternatives
• Two-flute design optimized for cast iron and steel drilling applications

Compatibility

Designed as an OEM-style replacement or direct-use carbide drill bit for CNC machining centers, drill presses, and turret lathes equipped with standard straight-shank toolholders accepting 13.00 mm shank diameters. Suitable for workpiece materials including cast iron and steel as specified by the manufacturer.

Installation Notes

This bit should be installed by a qualified machinist or toolroom technician familiar with carbide tooling. Secure the straight-cylindrical shank fully into the collet or drill chuck to the proper grip length before operation. Carbide tooling is brittle - avoid side loading, interrupted cuts at aggressive feed rates, or dropping the tool on hard surfaces. Confirm spindle runout is within acceptable tolerance before use, as excessive runout accelerates carbide wear and can cause premature failure.