"L" and "D" style: In the case of a straight guide pin not being pressed flush with the top surface of the upper die shoe (very common), the distance between the end of the guide pin and the top surface of the upper die shoe must be added to the UPPER DIE SHOE THICKNESS.
"D" style only: In the case of a Straight Sleeved Ball Bearing Bushing being used with the bushing not flush with the bottom surface of the lower die shoe, the difference between the bottom of the bushing and the bottom surface of the lower die shoe must be added to the LOWER DIE SHOE THICKNESS.
Automotive Style Die Sets With Cast Shoes: In the case of automotive style die sets where the upper and lower die shoes are large castings and the guide pins couldn’t possibly extend to the top of the die shoe, the assumption should be made that the “Minimum Shut Height “ is the distance between the top of the pocket in the upper shoe where the back of the guide pin would seat (straight pin) and the bottom of the pocket in the lower shoe where the bottom of the bushing would seat (straight sleeved bushing) while the complete assembly is at the minimum shut height with die life depleted. In the case of Demountable Guide Pins and Demountable Bushings being used with large cast die shoes, please contact the MDL Technical Department for engineering assistance before using the “MDL Part Selector”.
The results generated by MDL's on line PARTS SELECTOR are standard recommendations based on the general information submitted and general best practices. Other factors may require a different combination of components for best results. The ultimate decision and selection of suitable guiding components rests solely with the die designer and die builder.