05Z035 - Walter 3-Inch DOC Pilot Pin for 1-1/4 Inch Weldon Shank

Precision Centering for Heavy-Duty Drilling

The Walter 05Z035 Pilot Pin is a critical component for industrial magnetic drilling operations, specifically engineered for use with annular cutters requiring a 3-inch depth of cut (DOC). Designed to fit 1-1/4" Weldon shanks, this pilot pin serves two primary functions that are essential for efficient fabrication: precise positioning and reliable slug ejection. Before the cut begins, the pin allows the operator to align the cutter perfectly with the center punch mark, ensuring that every hole is drilled exactly where intended. This level of accuracy is paramount in structural steel fabrication and heavy machinery maintenance where tolerances are tight.

Constructed from high-quality hardened steel, the 05Z035 is precision ground to ensure smooth operation within the cutter. Unlike inferior pins that may bend or wear prematurely, Walter pilot pins are built to withstand the rigorous forces of industrial drilling. The hardening process ensures that the pin maintains its straightness and dimensional integrity over hundreds of cycles. This durability translates directly to cost savings by reducing the frequency of replacement and minimizing the risk of damage to expensive annular cutters caused by pin failure.

Beyond positioning, the pilot pin plays a vital role in the drilling cycle's conclusion. As the cutter penetrates the material, the pin retracts; once the hole is complete, the spring-loaded mechanism utilizes the pin to forcefully eject the metal slug. Failure to eject the slug can lead to catastrophic cutter breakage on the next attempt. With the Walter 05Z035, operators can trust in consistent, effortless slug removal, keeping production lines moving smoothly. Furthermore, on many magnetic drill press systems, this pilot pin acts as a valve to regulate the flow of internal coolant, releasing lubricant only when the pin is depressed against the workpiece, thereby conserving coolant and ensuring optimal lubrication at the cutting edge.