Another thing to consider when buying Taiwanese holders is the metal quality, I have thrown away all my Taiwanese holders, they were all great, in spec. but would get a lot of corrosion on the pull stud over time.
When we had experienced tool pullout on ER it ended up being a drastic detail, how well it was cleaned, once we started to clean the tool shank and the collet with Alcohol, we drastically reduced pullout.
I try to buy the shortest gauge length tool holders also, have a couple Schunk Tendo ES holders, great, once again never had pullout, but we clean the parts with Alcohol.
I just saw some hydraulic holders from a company Mapal (Germany) they had some short 50mm gauge length high torque hydraulics for $300 from $520, looked legit.
bought 1 and then a dozen. With the chamfer at the tip and the short length they align with our 1.75" gauge length Mari ER20 holders perfectly, coolant hits exactly the same spot on the cutter.
Have been roughing for a couple weeks with them, no issue.
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