Some argue that the standard 118-degree point is wrongly assumed to be a good compromise for general-purpose drilling in a variety of different metals. Drawing from the professional drilling industry, Milwaukee has chosen to go with a more advanced split drill point and flatten the angle out to 135°. In the past, drill point standards have been accepted based on precedent, rather than logic and design innovation. Because all tested bits shared the same 135° split-tip, we attributed the speed gains to the chip breaker. Ideal for various tough metal applications including but not limited to Stainless Steel, Cast Iron, and Thick Metal. With Milwaukee cobalt bits we drilled through 1/2-inch plate steel in 30% less time than with other cobalt bits. I was really impressed with the smooth cutting action. In a test of the variable helix design at the PTR Labs, we were able to repeatedly bore 1/2-inch holes over 5-inches deep in pressure-treated pine without any binding or argument from the bit. Quicker waste removal reduces friction and heat that dulls bits and leads to binding and the despicable experience of snapping off a drill bit in your workpiece. The design pulls waste out of the hole at a quicker rate and with fewer rotations of the bit. These bits start with a tight 35° twist on the helix at the tip and then spread out to 15° at the base. Typical twist drills have a standard helix with the flutes being uniform all the way down the shaft. Not true of both the Titanium and Cobalt Red Helix bits. You can find other cobalt and titanium bits, but this feature is truly innovative. In my opinion, here lies the real genius of this tool. Phillips 2 Alloy Steel Screw Driver Bit (15-Pack). Check out the product with the highest review count, the SHOCKWAVE Impact Duty 2 in. Milwaukee Red Helix Bits: Design and Innovation Variable Helix Steel Milwaukee Drill Bits have 137 individual products and 18 sets. Sharpen these bits, and you lose the benefits of the titanium coating. Bits with a titanium coating are better for general purpose drilling in softer surfaces since the coating is only on the surface. This means you can sharpen these bits without losing any performance. Despite this, cobalt (really a steel alloy with 5-8% cobalt) works better for drilling metal due to its high resistance to the massive heat generated when drilling through highly abrasive materials.Ĭobalt bits are great for high production rates as the cobalt is found throughout the entire material. They also do better resisting to corrosion. It’s worth noting some pros and cons of both materials. TiN-coated drill bits are actually harder than cobalt and more slippery to reduce friction. Red Helix Cobalt drill bits deliver up to 10X more life than Black Oxide drill bits. Use them on stainless steel and cast iron-wherever you’d be likely to dull lesser bits. These bits cost more, but they thrive in hard metal applications. Milwaukee® Cobalt Step Drill Bit 3PC Set 48-89-9291 – $199.Also in the Red Helix family (but not Shockwave) are the Milwaukee Cobalt drill bits. The company continues to lead and drive innovation in the drill bit category by delivering the longest-lasting, most versatile, and fastest-drilling accessories available. Milwaukee Tool is committed to providing users with accessory solutions that save time and increase productivity on the jobsite. For optimal use, the bits are recommended for mild and stainless steel up to 14ga thickness. The bits provide best-in-class performance when used on low speeds and with cutting fluid for stainless steel and high speeds for mild steel. The Laser Engraved reference marks allow users to easily stop on any size. Optimized for Cordless Drills, the 3-Flat Secure-Grip™ reduces bit slippage. The Rapid Strike™ Tip delivers up to 2X faster holes in stainless. The Cobalt Step Bits feature an elongated dual flute offering, best heat management, and smaller steps to provide the smoothest drilling experience. Made in the USA, the Milwaukee® Cobalt Step Drill Bits are designed from the ground up to deliver unmatched performance with up to 15X life in stainless steel and over 1,000 holes in mild steel. Milwaukee Tool is now a full solution provider for step drill bits with the introduction of their new Cobalt Step Bits. View All - Personal Protective Equipment.SHOCKWAVE™ Lineman's Sockets & Adapters.View All - Concrete Drilling and Chiselling.View All - Vacuums & Vacuum Accessories.
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