Drill bit Proline 78160 — metal drill bit Ø16 mm, length 178 mm, 1 pc

Single Proline 78160 metal drill bit with a 16 mm diameter and overall length 178 mm. This HSS-Co drill bit is designed for drilling metal and other hard materials, offering a straight shank that fits hand drills and drill presses. The bit is produced by precision grinding to ensure accurate, straight holes and is supplied as one piece in protective packaging for safe storage and handling.

Advantages

The drill bit features a 135° point angle with chamfering adjustment to enable quick penetration and reduced walking on the workpiece. Made from high-class high-speed steel with 5% cobalt, it has increased heat resistance and retains hardness at elevated temperatures. The all-ground manufacturing process provides excellent concentricity and rectilinearity of holes, and the geometry is suitable for demanding alloys and hardened materials.

Suitable for

• Drilling through stainless steel and acid-resistant steels
• Working with high-alloy and creep-resistant steels
• Creating holes in titanium and cast iron
• General workshop, construction and repair tasks requiring precision metal drilling

Key specifications

• Diameter: 16 mm
• Overall length: 178 mm
• Point angle: 135° with chamfering adjustment
• Material: high-speed steel with 5% cobalt (HSS-Co)
• Manufacturing: entirely ground for high accuracy
• High temperature resistance suitable for cutting hard alloys
• Shank type: straight shank compatible with standard chucks

How to use

Secure the workpiece and mark the drilling position. Use an appropriate center punch or pilot drill if precise positioning is required. Mount the straight shank in a suitable drill chuck and ensure firm clamping. Start drilling at low speed to establish the hole, then increase speed according to the material and diameter while applying steady feed pressure. Use cutting fluid or coolant when drilling stainless steel, titanium or other heat-sensitive alloys to reduce temperature and extend tool life. Clear swarf regularly to avoid clogging and overheating.

Usage recommendations

For best results when drilling stainless, high-alloy or heat-resistant steels, use moderate spindle speeds, firm but steady feed, and abundant cooling or lubricant. Replace or re-sharpen the bit when wear affects cutting performance; continued use of a deteriorated point increases heat and reduces hole quality.