01D550 - Walter SST+ 5.00mm Cobalt Blend Heavy-Duty Drill Bit

High-Performance Engineering for Industrial Drilling

The Walter 01D550 5.00mm SST+ Drill Bit represents the pinnacle of drilling technology for maintenance, repair, and operations (MRO) environments. Engineered by Walter Surface Technologies, this tool is specifically designed to address the common failure points found in standard high-speed steel bits. At the core of its performance is an enhanced cobalt blend substrate. This material composition significantly increases the red hardness of the bit, allowing it to maintain a sharp cutting edge even under the extreme thermal loads generated when drilling high-tensile alloys and stainless steel. For industrial professionals, this translates to reduced tool changes and consistent hole geometry over the lifespan of the bit.

Beyond the material science, the geometry of the SST+ line is meticulously crafted for efficiency. The bit features a "high flow" flute design, a critical innovation that accelerates chip evacuation. In deep-hole drilling or heavy-duty applications, chip packing is a primary cause of heat buildup and eventual tool breakage. By efficiently channeling swarf away from the cutting zone, the 01D550 runs cooler and cuts freer. Furthermore, the body of the drill bit is back-tapered. This subtle geometric reduction behind the cutting margins minimizes surface contact with the hole walls, drastically reducing friction and torque requirements. This design feature not only preserves the tool's integrity but also reduces strain on the power source, whether it be a stationary drill press or a portable hand drill.

The surface of the 01D550 is finished with Walter’s exclusive Bronze SST treatment. This treatment acts as a secondary defense against wear and corrosion while further lowering the coefficient of friction during operation. The combination of the cobalt blend, advanced geometry, and specialized surface treatment makes this 5.00mm bit a versatile powerhouse capable of tackling mild steel, non-ferrous metals, and particularly tough stainless steel grades. It is an essential component for any industrial inventory focused on precision and productivity.