Dayton Lamina Hjb 75 350 M2 Ball Lock Blank Punch M2 Hss

Product Description

The DAYTON LAMINA HJB 75 350 M2 is a solid mold die blank punch designed for precision blanking, piercing, and forming operations in tool-and-die and stamping applications. Built from M2 grade high-speed steel and hardened to 60-63 HRC, this punch delivers consistent performance under high-cycle, high-load press conditions. The ball lock retention system provides secure seating in compatible retainer plates without additional hardware. Overall length is 3.5 inches, with a shank diameter of 2.496 inches and a pin extension length of 0.0625 inches. Tool-and-die makers and press room technicians install this component as part of progressive die sets or mold die assemblies.

This blank punch is suited for use in stamping presses and mold die setups requiring a Jektole HJB series ball lock style punch. Typical applications include metal blanking and form operations in both short-run and production-volume press environments. The solid unground blank format allows machinists to finish-grind the punch face and profile to the exact required geometry, making it a flexible starting point for custom tooling builds. It is appropriate for use in both industrial production tooling and prototype die work.

Key Features

• M2 grade high-speed steel construction for heat and wear resistance under high-cycle press loads
• Hardness of 60-63 HRC provides consistent edge retention and dimensional stability
• Ball lock retention design for secure, tool-free seating in compatible retainer plates
• Solid blank format allows custom finish-grinding to required punch face geometry
• Minimum machinable length of 0.5 inches provides flexibility for face-grinding operations
• Part of the Jektole HJB series for standardized punch and retainer interchangeability

Compatibility

Designed for use with Jektole HJB series ball lock punch retainer systems. Verify retainer plate bore diameter and ball lock groove specification before installation to confirm fitment.

Installation Notes

Installation is typically performed by tool-and-die makers or press room technicians during die build or punch replacement. The punch should be seated fully into the retainer plate with the ball lock engaged before press operation. Inspect the punch face and shank for chips or surface damage before seating. Any finish-grinding of the blank punch face should be completed before installation and must maintain squareness to the punch axis to ensure proper part formation and press alignment.