High Precision Er Collet Clamping Tool for Collet Chuck

(Model No.) d H7 D D1 D2 L L1 L2 L3 (Collapsible capacity)
ER8 ≥1.0~5.0 8 8.45 6.5 13.5 2.98 1.5 1.2 0.5
ER11 ≥1.0~7.0 11 11.5 9.5 18.0 3.8 2.5 2.0 0.5
ER16 ≥1.0~2.5 16 17 13.8 27.5 6.26 4.0 2.7 0.5
>2.5~10.0 16 17 13.8 27.5 6.26 4.0 2.7 1.0
ER20 ≥1.0~2.5 20 21 17.4 31.5 6.36 4.8 2.8 0.5
>2.5~13.0 20 21 17.4 31.5 6.36 4.8 2.8 1.0
ER25 ≥1.0~2.5 25 26 22.0 34.0 6.66 5.0 3.1 0.5
>2.5~16.0 25 26 22.0 34.0 6.66 5.0 3.1 1.0
ER32 ≥2.0~2.5 32 33 29.2 40.0 7.16 5.5 3.6 1.0
>2.5~20.0 32 33 29.2 40.0 7.16 5.5 3.6 1.0
ER40 ≥3.0~26.0 40 41 36.2 46.0 7.66 7.0 4.1 1.0


Characteristic:
Unique design is mechanically sealed by virtue of the rear slots terminating prior to the annular groove, completely blocking the path of coolant flow to the front of the collet.

When using thru-coolant cutting tools, these collets ensure 100% coolant delivery to the tip of the cutting tool.

Range of use. boring, milling, drilling, tapping, engraving, CNC, spindle machine, and other processing

Collets ER and ER-UP:
Assembling Collet 
Insert groove of collet into eccentric ring of the clamping nut at the mark on the bottom of the nut. Push collet in the direction of the arrow until it clicks in place. Screw nut with collet onto toolholder. We recommend tightening the nut with a torque wrench.
Disassembly Collet
After the nut is unscrewed from the toolholder, press on the face of the collet while simultaneously pushing sideways on the back of the collet opposite the mark until it disengages from the clamping nut.