Collet Chuck, ER-32, JT33

The runout on this JT33 to ER-32 chuck is impressively tight—checked it with a indicator and it’s well under the 0.0002" spec. It holds my collets securely without any wobble, making milling cuts noticeably cleaner.

After swapping cheap chucks for this JT33 ER-32, the runout on my end mill is practically invisible—that 0.0002" TIR makes a real difference. The hardened steel body feels solid, and ER-32 collets seat without any binding.

The collet grip is incredibly precise, I measured the runout and it matched the spec perfectly. It slid right onto my JT33 spindle and locked up tight with zero wobble.