Drill Bit Evolution HSS Weldon 25 mm (EVO-WT37S) for Metal

The Evolution HSS Weldon 25 mm (EVO-WT37S) is a high-speed steel drill bit engineered for precise metalworking. It features a 25 mm cutting diameter and a Weldon flat shank for secure clamping in compatible tool holders. Designed to cut stainless steel, carbon steel and other ferrous materials, this drill bit is intended for use in drill presses and milling machines where a robust, accurately sized metal-drilling tool is required.

Advantages

This drill bit combines the wear resistance and heat tolerance of high-speed steel with the anti-slip benefits of a Weldon flat shank, ensuring stable operation under machining loads. The solid construction provides consistent cutting performance and dimensional accuracy when drilling through ferrous metals. Its geometry is optimized for metal penetration, helping to maintain hole quality and reduce chatter in bench and machine applications.

Suitable for

• Drilling stainless steel components
• Creating holes in carbon steel and other ferrous alloys
• Use in drill presses and milling machines
• Workshop and industrial metal fabrication tasks requiring precise hole diameters

Key specifications

• Material: High-speed steel (HSS)
• Cutting diameter: 25 mm
• Shank type: Weldon flat shank for secure clamping
• Intended materials: Stainless steel, carbon steel and other ferrous metals
• Recommended machine types: Drill press, milling machine

How to use

Mount the drill bit in a compatible Weldon-style holder and ensure the flat on the shank is clamped securely to prevent rotation. Use appropriate cutting fluid or coolant when drilling stainless steel or other materials that generate heat, and select feed and speed settings suitable for a 25 mm HSS tool and the specific workpiece material. Align the workpiece and pilot if necessary, start at low speed to establish the hole, then increase to the recommended RPM while maintaining steady feed until the hole is complete. Clear chips regularly to avoid clogging and excessive heat build-up.

Usage recommendations

For best results, use cutting fluid appropriate for ferrous metals, maintain correct spindle speed for a 25 mm HSS drill, and secure the workpiece properly. Periodically inspect the cutting edges for wear and regrind or replace the drill bit when cutting performance declines.