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People also ask
What does er stand for in collets?
The standard series are: ER-8, ER-11, ER-16, ER-20, ER-25, ER-32, ER-40, and ER-50. The "ER" name came from an existing "E" collet (which were a letter series of names) which Rego-Fix modified and appended "R" for "Rego-Fix". The series number is the opening diameter of the tapered receptacle, in millimetres.
What size is an er25 collet?
ER Collet | Length | Clamping Range |
ER-16 | 27.5 mm (1.08") | 0.5—9 mm (0.020—0.354") |
ER-20 | 31.5 mm (1.24") | 1—13 mm (0.039—0.512") |
ER-25 | 34 mm (1.34") | 1—16 mm (0.039—0.630") |
ER-32 | 40 mm (1.57" | 1—21 mm (0.039—0.827") |
How do collet sizes work?
The numbers represent the opening diameter of the tapered receptacle in millimeters. As you tighten the nut on your holder, the ER collet collapses together to hold round tools or stock from 0.5-2 mm (or 0.0197-0.0787 in., depending on collet size) smaller than the collet internal diameter.
What is the capacity of ER20 collets?
Our ER20 collets have a capacity ranging from . 0625 - . 5000 inches or in metric sizes from 2mm up to 13mm. The number shown on the collet is the largest size that particular collet can hold, but it can be tightened to a smaller size.