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ER20A collet nut has an internal thread of M25 x 1.5. 2. Outside diameter is 1.33" (34mm). 3. ER20A collet nut holds all ER16 collets.
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What size is ER20 collet nut?
(D) Diameter | 35mm |
D1 | 30mm |
Collet Standard | ER20 |
B | 19mm |
t (Thread) | M25 x 1.5 |
How do you install an ER collet?
Mounting instructions for ER collets and nut:
1
Put the collet into the nut, turn the collet slightly. ...
2
Fix the nut and the collet on the spindle rotate the nut until the collet is in pressing, wipe the straight shank of cutter and insert it into the pilot hole.
What are the ER collet sizes?
ER Collet | Length | Clamping Range |
ER-11 | 18 mm (0.71") | 0.5—7 mm (0.020—0.276") |
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") |
What are common collet sizes?
The standard series are: ER-8, ER-11, ER-16, ER-20, ER-25, ER-32, ER-40, and ER-50. ER collets collapse to hold parts up to 1mm smaller than the nominal collet internal size in most of the series (up to 2mm smaller in ER-50, and 0.5mm in smaller sizes) and are available in 1mm or 0.5mm steps.