Mounting instructions for ER-Collets per DIN STD 6499
Assembling instructions:
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 to tighten the nut with a
torque wrench.
Collet groove
Eccentric ring
Disassembling instructions:
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 until
it disengages from the clamping nut.
Improper assembly can permanently destroy the concentricity of the collet
and may result in a damaged clamping nut.
Note:
Only mount nuts with correctly inserted collets! Never place the collet into the
holder without fi rst assembling it into the nut.
Never clamp oversize tool shanks!
e.g. never use a Ø 12–11 mm collet to clamp a
Ø 12.2 mm shank. Rather use the next bigger
collet (here Ø 13–12 mm collet).
Maximum torque
ER 16
ER 20
ER 25
ER 32
ER 40
M22 × 1.5
M25 × 1.5
M32 × 1.5
M40 × 1.5
M50 × 1.5
70 Nm
100 Nm
130 Nm
170 Nm
220 Nm
Please observe the maximum torque indicated in the chart!
13
13. 41
KEMMLER
www.klte.cz
Insert tool the full length of the collet for best
results if possible. However, never insert tool
less than 2/3 of the collet bore length. Improper
tool insertion can permanently deform the
collet and will result in poor runout.