Collet for taps M20 | ER25 - 16.0 x 12.0 mm - DARMET

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Gross price: $21.35

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21.35

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Net price: $17.36

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Product code: DM_710_ER25_16,0X12

Information:

ER25 collet designed for M20 machine taps.
In order to correctly Tap operation, you should use compensation holder ER25.
There is also a version of sealed collets collet for work with coolant inside tools.

ER16 collet - 3.5x2.7

Installation of the collet

in the holder nut

Collet correctly installed

Disassembly of the collet

ER	d₁ [mm]	Clamping range [mm]	d₂ [mm]	d₃ [mm]	a_AT3	l₁ [mm]	l_{13 max} [mm]

ER11	1÷7	0.5	11	11.5	8°	18.0	6.6
ER16	1÷10	0.5÷1	16	17.0	8°	27.5	10.6
ER20	1÷13	0.5÷1	20	21.0	8°	31.5	11.5
ER25	1÷16	0.5÷1	25	26.0	8°	34.0	12
ER32	1÷20	0.5÷1	32	33.0	8°	40.0	13
ER40	1÷30	1	40	41.0	8°	46.0	15

To correctly mount the ER collet in the holder:

Insert the collet at an angle into the nut
Hook the collet's channel into the eccentric or cylindrical protrusion of the nut (Fig. A)
Press the collet into the nut (Fig. B)
Screw the nut with the pressed-in sleeve onto the holder so that the tool being processed can be clamped.

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