Clamping holder for ER20 collets with cylindrical shank Ø20 | 50 mm | - DARMET 754

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Product code: DM_754_ER20MD20_050

Description

Information:

Holder for mounting ER20 collet cages.
Cylindrical arboraccording to DIN1835 is used in conventional machines and CNC machine tools.
A correctly seated collet is perfectly flush with the face of the ER nut, only then should we tighten the whole thing with a special hook wrench or multi-point.
The key flat is used for counterholding, which significantly facilitates tightening and loosening the clamping nut, and thus releasing the tool.
Standard collets have a round hole, which makes the holder universal, as we can clamp all shank tools with a cylindrical shank or a cylindrical shank with a Weldon flat, i.e. drills, or mills.
Through-through tool for internal cooling.

Specification:

dimensions of the ER collet chuck with cylindrical shank

Parameter	Value
Collet	ER20
D	20 mm
L	50 mm
D₁	28 mm
Weight	0.31 kg

Technical information: DIN1835 shank by DARMET

How to properly mount a collet in an ER nut?

Instructions for correct cage assembly in the ER collet.

The collet should be mounted at an angle, hooking the cage channel onto the eccentric or cylindrical band of the nut (A), feeling a slight resistance, press until a characteristic "click" is heard (B). Disassembly is equally simple, tilt the cage to release it from the band in the nut (C).

Video presentation of the correct assembly of the entire assembly in the ER collet.