Dayton Lamina Kjb 25 250 Solid Mold Die Blank Punch

Product Description

The DAYTON LAMINA KJB 25 250 is a solid mold die blank punch from the Jektole (KJB) Series, designed for precision die and mold tooling applications. It features a 0.375-inch head diameter, a 0.25-inch shank diameter, and a head height of 0.125 inches. The overall length is 2.5 inches, providing sufficient reach for standard die set configurations. Constructed from A2 grade tool steel, this punch offers the hardness and wear resistance required for repeated blanking cycles. It is typically installed by tool and die makers, mold technicians, and precision machining professionals working with progressive or compound die sets.

This blank punch is suited for use in solid mold die applications where accurate, repeatable hole blanking or piercing is required. The Jektole series profile is a widely recognized standard in precision punch tooling, making this component a direct fit for die sets built around that geometry. With a minimum machinable length of 0.5 inches and a pin extension length of 0.03 inches, it supports custom grinding to final length during die assembly. Typical installations are found in metal stamping, sheet metal fabrication, and precision mold shops operating production or prototype tooling.

Key Features

• A2 grade tool steel construction for hardness and wear resistance in high-cycle blanking operations
• 0.375-inch head diameter with 0.25-inch shank diameter for Jektole (KJB) series die sets
• 2.5-inch overall length with 0.125-inch head height for standard die plate clearance
• Minimum machinable length of 0.5 inches allows custom finish grinding during assembly
• Pin extension of 0.03 inches provides controlled protrusion for precise blanking alignment
• Solid construction with no internal voids, ensuring consistent performance under press load

Compatibility

Designed as an OEM-style replacement or new-installation component for Jektole (KJB) series solid mold die sets requiring a 0.375-inch head diameter, 0.25-inch shank diameter blank punch.

Installation Notes

Installation is performed by qualified tool and die makers or mold technicians. Always de-energize and lock out the press before removing or installing punch components. The punch should be properly retained in the punch plate per the die set manufacturer specifications, and the die set should be confirmed to be at bottom dead center with no stored energy before service. Grinding to final length should be performed with appropriate toolroom equipment to maintain dimensional accuracy and surface finish.