Crimping a ring terminal - GIF

[Altair]

Crimping a ring terminal.




Previously:

Self-adjusting crimping pliers - GIF
Ultrasonic wire splicer - GIF
Simple electrical wire joining technique - GIF
Splicing three wires together - GIF
Splicing a 24kV electrical line - GIF

[desbromilow]

my crimpers are the hex type which compress from all sides - does anyone know if this type with a single point of "squeeze" have any benefit, or tradeoffs?

I was told years ago that the goal was to maximise metal contact, reduce internal volume (compress the strands/cores) and essentially microweld the cable to the lug so it was difficult/impossible for corrosion to become an issue. I don;t know if this method is achieving those outcomes.

[Toolmaker51]

That hydraulic crimper scales up hand crimpers for insulated terminals, the proportions don't seem to compare.
If I had to guess, that dent reduces interior 'volume' like a hex crimp.
But; can't visualize how indent equals same all round compression, especially the two pocket areas next to it. Pressing round into a crescent isn't logical.
Regarding the seal, have gotten unbelievably good results with adhesive lined shrink tube.