Drill bit GRAPHITE HSS cylindrical for metal 13 mm (model 55H040)

GRAPHITE HSS cylindrical drill bit for metal, 13 mm diameter (model 55H040) is a high-speed steel cutting tool designed for drilling through steel and other metal materials. The tool features a straight cylindrical shank compatible with standard drill chucks and machine tool holders, making it suitable for both manual drills and drill presses. Its geometry and HSS material provide a balance of hardness and toughness for general metalworking operations in workshops and industrial environments.

Advantages

The HSS material delivers good wear resistance and heat tolerance compared with standard carbon steel bits, allowing consistent drilling performance at moderate cutting speeds. The cylindrical shank enables secure clamping in common chucks and holders while providing straightforward regrinding and maintenance. Designed for general-purpose metal drilling, this 13 mm bit offers reliable hole quality and dimensional stability when used with appropriate cutting parameters and coolant.

Suitable for

• Drilling through mild and alloy steels
• Creating through-holes in metal components
• General workshop and industrial drilling tasks
• Use in hand-held drills and drill presses with suitable chuck capacity

Key specifications

• Material of cutting part: high-speed steel (HSS)
• Diameter: 13 mm
• Shank type: cylindrical (straight) shank compatible with standard chucks
• Primary use: metal drilling (through-holes, general-purpose)
• Suitable for use with coolant or cutting fluid for improved tool life

How to use

Secure the drill bit in a properly rated chuck or machine holder that accepts a 13 mm shank. Select a suitable spindle speed and feed rate for the metal being drilled—lower speeds for harder alloys and higher speeds for softer steels—following standard drilling charts for HSS tools. Center punch the workpiece if necessary to prevent walking, and clamp the workpiece firmly. Use straight pecking or intermittent peck cycles for deep holes to remove chips and reduce heat buildup. Apply cutting fluid or coolant when drilling harder materials or when prolonged drilling is required to extend tool life and improve surface finish.

Usage recommendations

For best results, match spindle speed and feed to the workpiece material, keep the drill bit sharp through timely resharpening, and use appropriate coolant. Avoid excessive side loads and ensure secure clamping of both tool and workpiece to maintain hole accuracy and prevent premature tool failure.