Drill bit set Proline 5782199 HSS-Co for metal, 19 pcs, sizes 1–10 mm

Proline 5782199 is a 19-piece HSS-Co drill bit set for metal, covering diameters from 1 mm to 10 mm. The bits are made from cobalt-alloy high-speed steel with 5% cobalt content, fully ground and finished with a 135° point angle and adjustable helix for accurate drilling in a wide range of ferrous materials, including stainless and acid-resistant steels.

Advantages

The HSS-Co composition with 5% cobalt increases heat resistance and hardness at elevated temperatures, extending tool life during intensive drilling. Fully ground flutes and a 135° point reduce wandering and improve centring, while the adjustable helix supports consistent chip evacuation and efficient cutting across varying diameters from 1 mm to 10 mm.

Suitable for

• General and alloy steels up to 900 N/mm²
• Tool steels for hot and cold work
• Steels after heat treatment and carburising
• Stainless and acid-resistant steels

Key specifications

• Brand: Proline
• MPN: 5782199
• EAN: 5903755782199
• Set contents: 19 pieces (diameters: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10 mm)
• Material: HSS-Co (high-speed steel with 5% cobalt)
• Point angle: 135°
• Manufacture: fully ground

How to use

Select the drill diameter appropriate for the hole and material. Secure the workpiece and clamp the drill bit in the chuck. Use suitable cutting speeds and feed rates for HSS-Co bits and the specific steel grade being drilled. Start at low speed to establish the hole, then increase speed as appropriate. Apply cutting fluid when drilling hardened or stainless steels to reduce heat and improve chip removal. Withdraw the drill periodically to clear chips and avoid overheating.

Usage recommendations

For best results with Proline HSS-Co bits, use cutting fluid for stainless and heat-treated steels, maintain correct spindle speed and feed, and replace worn bits to prevent poor hole quality and excessive load on the drill press or hand drill.