Die safety blocks are called by many names: safety blocks, ram blocks, die blocks, or prop blocks. Regardless of the term, die safety blocks all have the same purpose: provide protection to employees working in the die area from a free-falling upper die/slide.
Rockford Systems LLC
You Need Die Safety Blocks, and Here’s Why
These devices may appear to be simple, but there are many factors to consider in choosing what type of die safety blocks to use, how many to use, and where to place them.