ER Collet, Milling Machine Collet
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The ER collet system is the most widely used tool holding system in the world. Installed on the milling machine, it is a cylindrical chuck which is used to fix drilling bits or milling tool. ER collets are used in the various machining processes, such as boring, milling, reaming, tapping and grinding. The ER collet can be used in all kinds of machine tools, such as Japanese FUJI, Taiwan WANG TZYY, Greenway, MYLAS and other automatic lathes.
The materials of ER collet: 9SiCr alloy tool steel, SUJ2 bearing steel
We can provide several types of ER collet as follows:
- ER8 Collects
- ER11 Collects
- ER16 Collects
- ER20 Collects
- ER25 Collects
- ER32 Collects
- ER40 Collects
Parameters
- Gripping range:
ER11=0.5mm, ER16/20/25/32=1mm (Take ER11 collet as an example, the size of collet is 7mm and it can grip between 6.75mm and 7.25mm; if choosing ER16 collet, the size of collet is 10mm and it can grip from 9.5mm to 10.5mm)
Type D L L1 L2 Size of collet ER11 11.4mm 17.7mm 13.5mm 2.2mm 1.0-7.0mm ER16 16.7mm 27.6mm 21mm 3.9mm 1.0-10.0mm ER20 20.8mm 31.7mm 24mm 5mm 1.0-13.0mm ER25 25.8mm 34.2mm 26.3mm 4.8mm 2.0-16.0mm ER32 33mm 40mm 30.9mm 5.5mm 3.0-20.0mm - The gripping ability of ER collet
Type Gripping ability Length of collet ER8 0.5-5.0 13.5 ER11 0.5-7.0 18 ER16 0.5-10.0 27.5 ER20 1.0-13.0 31.5 ER25 1.0-16.0 34 ER32 2.0-20.0 40 ER40 3.0-26.0 46 ER50 6.0-34.0 60 - Concentricity of ER collet
Size of collet mm L mm Concentricity（mm） Regular A AA 1.0-1.4 6 0.015 0.01 0.005 1.5-2.9 10 3.0-5.9 16 6.0-9.9 25 10-17.9 40 0.02 0.015 0.01
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